1 80 kg scaffold is 5.80 m long. it is hanging with two wires, one from each end. a 580 kg box sits 1 m from the left end. what is the tension in the right hand side wire?

Answers

Answer 1

The tension in the right-hand side wire is 6525 N.

Given:

Weight of the scaffold = 180 kgLength of the scaffold = 5.8 mWeight of the box = 580 kgDistance of the box from left end = 1 mLet the tension in the left wire = T1Let the tension in the right wire = T2

To find: Tension in the right-hand side wireWe know that the sum of forces acting in a vertical direction should be equal to 0 as there is no acceleration in the vertical direction. ∑Fv = 0In the horizontal direction, there are no forces acting on the system.

∑Fh = 0Now considering forces in the vertical direction: T1 + T2 = (Weight of scaffold + Weight of the box) gT1 + T2 = (180 + 580) x 9.8T1 + T2 = 7644 N1. From the diagram, we can see that the box is nearer to the left side. Hence, the tension force in the left wire is greater than the tension force in the right wire.

T1 > T22. Let's take moments about the right end of the scaffold as shown in the figure below.

∑Mr = 0T1 × 5.8 = T2 × 1T2 = 5.8/1 × T1T2 = 5.8T1

Now, we can substitute the value of T2 in equation (1):

T1 + T2 = 7644N6.8 T1 = 7644 N  T1 = 1125 N

To find T2, we can substitute the value of T1 in equation (2):

T2 = 5.8 × T1T2 = 5.8 × 1125 N T2 = 6525 N

Therefore, the tension in the right-hand side wire is 6525 N.

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Related Questions

When Joselyn went to the store she bought 2.7kg of salt water taffy. What would Joselyn do to find out how many grams she bought?A. Divide by 1000B. Multiply by 1000C. Divide by 100D. Multiply by 100

Answers

At the shop, Joselyn purchased 2700 grammes of salt water taffy.

To convert kilograms (kg) to grams (g), Joselyn would need to multiply the weight in kilograms by 1000. This is because there are 1000 grams in 1 kilogram. Therefore, to find out how many grams of salt water taffy Joselyn bought, she would need to multiply 2.7kg by 1000.

The correct answer is (B) Multiply by 1000.

Multiplying 2.7kg by 1000 gives:

2.7kg x 1000 = 2700g

So Joselyn bought 2700 grams of salt water taffy at the store.

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if the leftover energy in the previous problem is 134.9 j (it's not, don't go back and try to use this value) and the mass is 2 kg, what speed (in m/s) does the block have at the bottom of its slide? revisit the definition of ke if needed.

Answers

The speed of the block at the bottom of its slide is 16.4 m/s.

In the previous problem, the kinetic energy of the block was found to be 135 J.

The formula for kinetic energy is

KE = 1/2mv²,

Where:

m is the mass of the object and v is its velocity.

Now we can use the same formula to find the velocity of the block at the bottom of its slide.

KE = 1/2mv²

We know that the mass of the block is 2 kg, and the kinetic energy at the end of the slide is 135 J.

KE = 135 Jm = 2 kg1/2mv² = 135 Jv² = 2(135 J) / 2 kgv² = 270 JV = sqrt(270 J) / 2 kgV = 16.4 m/s

Therefore, the speed of the block at the bottom of its slide is 16.4 m/s.

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as a 4.4-kg object moves from (2 i 5 j) m to (6 i - 2 j) m, the constant resultant force acting on it is equal to (4 i - 3 j) n. if the speed of the object at the initial position is 4.9 m/s, what is the work done by the force, and what is its kinetic energy at its final position? as your answer in canvas, write the kinetic energy in joules.\

Answers

The kinetic energy of the object at its final position is 90.98 J.Given,Mass, m = 4.4 kg Initial position, r1 = (2 i + 5 j) m, Final position, r2 = (6 i − 2 j) m ,Initial velocity, u = 4.9 m/s ,Constant resultant force, F = (4 i − 3 j) N .To find the work done by the force,First, we need to find the displacement vector = r2 - r1= (6 i − 2 j) - (2 i + 5 j)= (6 - 2) i + (-2 - 5) j= 4 i - 7 j

Magnitude of the displacement vector,= √(4² + (-7)²)= √65 m Now, we can find the work done by the force,W = F.s= (4 i - 3 j) . (4 i - 7 j)= 4(4) + 3(7)= 37 J

Therefore, the work done by the force is 37 J.

To find the kinetic energy of the object at its final position,First, we need to find the final velocity of the object by using the work-energy principle.Initial kinetic energy, K1 = (1/2)mu²= (1/2) × 4.4 × (4.9)²= 53.98 J

Work done by the force, W = 37 JFinal kinetic energy, K2 = K1 + W= 53.98 + 37= 90.98 JTherefore, the kinetic energy of the object at its final position is 90.98 J.

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Consider the spectra of the two main sequence stars below (Star 1 on the left and Star 2 on the right) and sort the statements into the true or false bins. The intensity axes are not necessarily on the same scale. 350 450 550 Wavelength (nm) 350 45Q750 650 750 Wavelength (nm) true false Star 1 has a longer lifetime than Star 2 Star 2 is bluer than Star 1 Star 2 has a lower mass than Star 1 Star 1 has prominent hydrogen lines Star 2 has a higher luminosity than Star 1 Star 2 is cooler than Star 1.

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. Additionally, Star 1 has prominent hydrogen lines, indicating a lower temperature than Star 2. Therefore, the statements can be sorted into the true and false bins as indicated above.

True: Star 1 has a longer lifetime than Star 2; Star 2 is bluer than Star 1; Star 2 has a lower mass than Star 1; Star 1 has prominent hydrogen lines.

False: Star 2 has a higher luminosity than Star 1; Star 2 is cooler than Star 1.

The spectra of the two main sequence stars illustrate some differences between the two stars. Star 1 is on the left and has a longer lifetime than Star 2, which is on the right. This is evident from the intensity axes that are not on the same scale. Star 2 has a lower mass than Star 1, is bluer than Star 1, and has a lower luminosity

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What are water droplets that act as a prism?
O a
Ob
OC
Od
mirage
rainbow
filter
concave mirror

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Water droplets that act as prism are phenomenon known as : b) rainbow.

What are water droplets that act as prism?

When light enters water droplet and is refracted, it is dispersed into its component colors due to difference in the index of refraction of each color of light. This results in band of colors in the shape of arc with red on outer edge and violet on inner edge, with other colors of spectrum in between. This is the same effect as prism which disperses light in the same way.

Rainbows appear in seven colors because water droplets break sunlight into seven colors of spectrum and you get the same result when sunlight passes through prism. Water droplets in the atmosphere act as prism though traces of light are very complex.

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g as a prank, someone drops a water-filled balloon out of a window. the balloon is released from rest at a height of 10.0 m above the ears of a man who is the target. then, because of a guilty conscience, the prankster shouts a warning after the balloon is released. the warning will do no good, however, if shouted after the balloon reaches a certain point, even if the man could react infinitely quickly. assuming that the air temperature is 20 c and ignoring the effect of air resistance on the balloon, determine how far above the man's ears this point is.

Answers

The point at which the warning will do no good is 7.50 m above the man's ears.

When a water-filled balloon is released from rest at a height of 10.0 m above the ears of a man, the warning will do no good if shouted after the balloon reaches a certain point. Assuming that the air temperature is 20°C and ignoring the effect of air resistance, this point is 7.50 m above the man's ears.


The vertical displacement (d) can be determined using the equation [tex]d = \frac{vf2}{2g}[/tex], where vf is the final velocity and g is the acceleration due to gravity (9.81 m/s2).


Since the balloon was released from rest, the initial velocity is 0 m/s. Therefore, [tex]d = \frac{02 }{ 2} (\frac{9.81 m}{s2} ) = 0[/tex]m. Since the initial height was 10.0 m, the final height is 10.0 m + 0 m = 10.0 m.


The point at which the warning will do no good is 7.50 m above the man's ears, so the final height of the balloon must be 10.0 m - 7.50 m = 2.50 m.


Therefore, the point at which the warning will do no good is 7.50 m above the man's ears.

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what's the correct answer. ​

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The coordinated functions of the Nervous, Endocrine, and Reproductive systems are:

D. CerebrumN. Wernicke's AreaF. Occipital LobeH. HypothalamusJ. ThalamusH. HypothalamusC. CerebellumL. Superior ColliculusA. AmygdalaM. Pineal Gland

What are coordinated functions?

Coordinated functions refer to the integration and communication between different organs, systems, and tissues in the body to achieve a common goal or purpose. In biological terms, coordinated functions often involve multiple physiological systems working together to maintain homeostasis, respond to stimuli, or carry out complex behaviors or processes.

Examples of coordinated functions include the regulation of blood glucose levels by the pancreas and liver, the coordination of movement by the nervous and musculoskeletal systems, and the release of hormones by the endocrine system to control various physiological processes.

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The question is:

"COORDINATED FUNCTIONS OF THE NERVOUS, ENDOCRINE, AND REPRODUCTIVE SYSTEMS"

Directions: Identify the part of the brain that is involved in each situation below. Write only the letter of your answer.

A. Amygdala

B. Brocka's Area

C. Cerebellum

D. Cerebrum

E. Hippocampus

F. Occipital Lobe

G. Hippocampus

H. Hypothalamus

I. Inferior Colliculus.

J. Thalamus

K. Pons

L Superior Colliculus

M. Pineal Gland

N. Wernicke's Area

O. Pituitary Gland

1. "My heart tells me that you are the one. I love you so much!"

2. "IAOCEVOY! I don't know what that means. It's all Greek to me!"

3. "Chartreuse, Olive,Turquoise, and Mint are all shades of green."

4. "Janna always wakes up at 4 in the morning, regardless of whether she uses an alarm clock or not."

5. "I don't remember the way going to Myla's house. Can you accompany me there?"

6. Jenny's mother is about to give birth, she complains about contraction and pain usually when the baby is kicking

7. "Anthony is a very skilled dancer. He just won the school hip hop dance competition last week."

8. "As Nica was walking on the road she readily moved to the side for she heard an incoming ambulance"

9. "Elsa loves making faces whenever she talks to her friends."

10. "Ryan usually talks about how happy his high school days were to his grandchildren."

charge q1 is distance s from the negative plate of a parallel-plate capacitor. charge is distance 2s from the negative plate. what is the ratio of their potential energies?

Answers

The electric potential energy, U, of two point charges is given by the equation, U = kq1q2/r where k is Coulomb's constant, q1 and q2 are the charges and r is the distance between the two charges. Now, let's solve the question using this equation. There are two charges, q1 and q2, and a parallel plate capacitor between them. The distance of q1 from the negative plate is s, and the distance of q2 from the negative plate is 2s. The charges have the same magnitude of charge, so let's assume q1 = q2 = q. Using the formula mentioned earlier, we get U1= kq^2/sU2= kq^2/2s. Therefore, the ratio of their potential energies is U2/U1= kq^2/2s / kq^2/sU2/U1= (kq^2/2s) × (s/kq^2)U2/U1= 1/2.

Therefore, the ratio of their potential energies is 1:2.

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Imagine another solar system, with a star of the same mass as the Sun. Suppose a planet with a mass twice that of Earth (2MEarth) orbits at a distance of 1 AU from the star. What is the orbital period of this planet? Hint: Think about how the mass of the Sun compares with the mass of the Earth. a. 3 months b. 6 months
c. 1 year d. 2 years
e. It would not be able to orbit at this distance.

Answers

The correct answer is option D.2 years

What is Kepler's third law of planetary motion?

According to Kepler's Third Law of Planetary Motion, T² is proportional to r³, where T is the period of revolution of the planet and r is the distance between the planet and the star.

In order to solve for T,  

AU = 1

Astronomical Unit = the average distance between the Earth and the Sun = 149.6 million kilometres

Therefore, the planet is orbiting at a distance of 149.6 million kilometres from the star.

Substituting the values of r and solving for

T².T² ∝ r³T² ∝ (149.6)³T²

= (149.6)³T²

= 3.522 x 10¹²T

= √3.522 x 10^¹²T

= 1.87 x 10⁶ seconds

T = 31,100 minutes

T = 518 hours

T = 21.6 days

T = 2 years

Therefore, the orbital period of the planet with twice the mass of Earth orbiting at a distance of 1 AU from a star with the same mass as the Sun is 2 years.

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what state of matter is rutherfordium in while at room temperature

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Rutherfordium is a synthetic element with the atomic number 104 and symbol Rf. As a synthetic element, it is not found naturally on Earth and is produced through nuclear reactions in laboratories.

Rutherfordium is a member of the transition metals group and is expected to have similar physical and chemical properties to its neighboring elements in the periodic table. However, due to its radioactive nature and short half-life, its physical properties are difficult to determine.

While there is no experimental data available on the state of matter of rutherfordium at room temperature, it is expected to be a solid metal, similar to other transition metals, such as copper or nickel.

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hydroelectric dams generate electricity by question 20 options: a. using the energy of the river to produce steam. b. using run-of-the-river systems, in which turbines are placed into the natural water flow. c. water impoundment, in which dam operators control the rate of water flow to turbines. d. using generators that are placed on the bottom of a river. e. converting the kinetic energy of the water impounded behind a dam into potential energy.

Answers

Hydroelectric dams generate electricity through water impoundment, in which dam operators control the rate of water flow to turbines.

c is the correct option.

Hydroelectric dams are dams used to produce electricity. The movement of water drives turbines, which power generators that generate electricity.

The movement of water, generated by gravity, is what drives turbines. Hydroelectric dams are the most widely used renewable energy source, accounting for approximately 16% of global electricity production.

Hydroelectric dams generate electricity through water impoundment, in which dam operators control the rate of water flow to turbines.

This is the process of using turbines that are powered by the movement of water that has been dammed to generate electricity.

Turbines are powered by water that has been dammed to generate electricity, which is then sent to a power station to be used.

The electricity generated from hydroelectric dams is clean and safe, making it an important part of the renewable energy mix. They are also an essential part of the global infrastructure because they provide reliable, low-cost power.

They also assist in the management of rivers, flood control, and irrigation systems in various parts of the world.

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what are two characteristics of net forces that are balanced

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Balanced net forces have equal and opposing forces that cancel each other out and provide a net force of zero, which does not alter the motion of an item.

An object's velocity remains constant and motion is unaltered when the net forces acting on it are balanced. This indicates that the thing is either stationary or moving continuously. When the forces exerted on an item are opposing in direction and of equal magnitude, they are said to be balanced forces. The forces in this situation cancel one another out, leaving a net force of zero. This can happen when one force is applied to an item and that object applies an equal and opposite force in the opposite direction to another object. It can also happen when two or more forces are applied in opposing directions and of equal magnitude. Understanding equilibrium and stability in physics requires a knowledge of the idea of balanced forces.

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A bus engine transfers chemical potential energy into ___ so that the bus moves.
a. kinetic energy
b. thermal energy
c. gravitational potential energy
d. electrical energy

Answers

the answer is “A” !!!!

Five docks are being tested in a laboratory. Exactly at noon, as determined by the WWV

Answers

Exactly at noon, as determined by the WWV time signal, on successive days of a week the clocks according to their relative value as good timekeepers, best to worst.

Time signals are also used in many everyday applications, such as GPS navigation, where precise timing is essential for calculating positions accurately.  A time signal refers to any signal that provides information about the passage of time. Time signals are often used in experiments to measure the duration of events or to synchronize the timing of multiple processes.

One common type of time signal is a periodic signal, which repeats itself at regular intervals. This can be used to measure the period or frequency of a phenomenon, such as the oscillation of a pendulum or the vibration of a guitar string. Another type of time signal is a pulse signal, which provides a brief burst of energy at a specific time. This can be used to trigger the start or stop of a process or to measure the time delay between different events.

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as noted in this chapter, plants help to reduce water runoff and soil erosion, both of which affect the health of streams and rivers by impacting water quality. soil erosion increases the silt load in water and this literally smothers living organisms, particularly plants and invertebrate species. runoff water can carry pollutants, particularly pesticides and herbicides from agricultural land. read the description of each landscape and rank them from best stream quality to worst stream quality. 1: streams cutting through small farms with several different crop types and natural vegetation buffers between the fields and the streams. 2: a large floodplain area covered with lowland forests and swamps full of emergent vegetation, with small streams cutting through the area. 3: an urban housing development where the trees growing along the streams were removed and replaced with lawns. 4: a system of large farms with no buffer vegetation between the fields and the streams that cut through the farms. question list (4 items) (drag and drop into the appropriate area) landscape 1 landscape 2 landscape 3 landscape 4 correct answer list best stream quality

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Plants help to reduce water runoff and soil erosion, both of which affect the health of streams and rivers by impacting water quality.

Soil erosion increases the silt load in the water, which can smother living organisms, particularly plants and invertebrate species. Runoff water can carry pollutants, particularly pesticides, and herbicides from agricultural land.

Landscape 1 (streams cutting through small farms with a variety of crop types and natural vegetation buffers between the fields and the streams) would be the best quality, followed by Landscape 2 (a large floodplain area covered in lowland forests and swamps full of emergent vegetation, with small streams cutting through the area) and Landscape 3 (an urban housing development where the streams are surrounded by emergent vegetation).

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Discuss three applications of the effects of surface tension.​

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1. Surface tension: is the property of the liquid by virtue of which the free surface of liquid at rest tends to have minimum surface area and as such it behaves as if covered with a stretched membrane.

2. Effect of Surface tension:
Surface tension of soap solution is less, it can spread over large areas and wash clothes more effectively, since the dirt particles stick to the soap molecules.
In soldering, addition of flux reduces the surface tension of molten tin. Hence, it spreads.
Antiseptics like dettol have low surface tension, so that they spread faster.
Surface tension prevents water from passing through the pores of an umbrella.
A duck is able to float on water as its feathers secrete oil that lowers the surface tension of water.

what device is used through ureteroscope to capture an inact calculus or fragments if fractured by laser

Answers

The device used through a ureteroscope to capture an intact calculus or fragments if fractured by laser is called a basket retrieval device.

A ureteroscope is a specialized tool that is used to examine and treat the inside of the ureter and kidney. It is made up of a long, thin tube with a camera and a light source at the end, which is inserted into the patient's urinary tract through the urethra. The physician will be able to examine the lining of the bladder, ureters, and kidneys during this examination.

A basket retrieval device is a specialized tool that is used during ureteroscopy, which is a minimally invasive surgical technique used to examine the inside of the urinary tract. It is used to remove kidney stones or any fragments that have been broken down by laser lithotripsy.The basket retrieval device works by capturing the stones or fragments with its metal "basket" and then removing them from the body. The physician will then be able to extract the stones or fragments by retracting the basket into the ureteroscope's working channel. The stones will be disposed of or sent to a lab for further testing.

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A slingshot sends a stone vertically upward from a height of 20 feet above a pool of
water. The starting speed of the stone is 90 feet per second. Its distance in feet, d.
above the water is given by the equation:
d-20+90t-16t^2, where t is the time in seconds after the launch.
Drag statements to the table to show what each coordinate labeled on the graph
represents in this problem situation.
the height of the stone when it is launched
the time when the stone hits the water
the time when the stone is launched the maximum height of the stone
the time when the stone reaches its maximum height
Coordinate
A
the height of the stone when it hits the water
What the Coordinate Represents
DRAG AND DROP
AN ITEM HERE
DRAG AND DROP
AN ITEM HERE
DRAG AND DROP
DRAG AND DROP

Answers

Coordinate , A - the height of the stone when it hits the water. A slingshot sends a stone vertically upward from a height of 20 feet above a pool of water.

What the Coordinate Represents?

The coordinate A represents the height of the stone when it hits the water. When the stone hits the water, its height above the water surface is zero.

So, we can set the expression for the stone's height equal to zero and solve for t to find the time when the stone hits the water. The height of the stone when it is launched is given as 20 feet, which is a fixed value in this problem.

The time when the stone is launched is also a fixed value, which is zero. The maximum height of the stone is the highest point the stone reaches above its initial height of 20 feet. The time when the stone reaches its maximum height is the time at which the vertical velocity of the stone becomes zero.

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An electroscope is a device with a metal knob, a metal stem, and freely hanging metal leaves used to detect charges. The diagram below shows a positively charged leaf electroscope.
As a positively charged glass rod is brought near the knob of the electroscope, the separation of the leaves will
remain the same
increase

Answers

As a positively charged glass rod is brought near the knob of the electroscope, the separation of the leaves will increase.

What is Charge?

Charge is a fundamental property of matter that determines how objects interact with each other through the electromagnetic force. It is a physical property that can be positive or negative and can be measured in coulombs (C).

This is because the positively charged glass rod will induce a negative charge on the metal knob of the electroscope. The negative charges will repel the electrons in the metal leaves, causing them to move away from each other and increasing their separation. The greater the amount of charge on the glass rod, the greater the separation between the leaves will be.

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A dragster is travelling east when the parachute opens and slows the dragster for 4.5 seconds at a rate of 10 m/s2 west. What was the dragster's change in velocity due to the parachute?​

Answers

The dragster's change in velocity due to the parachute can be calculated using the kinematic equation:

Δv = aΔt

where Δv is the change in velocity, a is the acceleration, and Δt is the time interval during which the acceleration occurs. In this case, the dragster is initially travelling east, so its velocity is positive, and the parachute applies a force in the opposite direction, resulting in a negative acceleration.

Given that the acceleration is -10 m/s² (westward) and the time interval is 4.5 seconds, we can calculate the change in velocity as:

Δv = (-10 m/s²) x (4.5 s) = -45 m/s

Therefore, the dragster's change in velocity due to the parachute is -45 m/s (westward). This means that the dragster's velocity is reduced by 45 m/s in the westward direction over the 4.5-second interval during which the parachute is deployed.

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The change in velocity due to the parachute is -45 m/s east

What is velocity ?

Velocity is a vector quantity that describes the speed and direction of motion of an object. In other words, velocity is the rate at which an object changes its position in a specific direction.

Velocity is expressed in units of distance per time, such as meters per second (m/s) or kilometers per hour (km/h)

Velocity is different from speed, which is also a measure of the rate of motion but only describes how fast an object is moving, without taking into account the direction of motion.

we will use the formula :-

change in velocity = acceleration x time

where acceleration is the rate at which the dragster slows down, and time is the duration for which it slows down.

Here, the dragster is travelling east, and the parachute applies a force in the opposite direction (west), causing it to slow down. So, the acceleration is -10 m/s^2 (negative because it's in the opposite direction to the velocity).

The time for which the dragster slows down is 4.5 seconds.

Therefore, the change in velocity due to the parachute is:

change in velocity = acceleration x time

change in velocity = (-10 m/s^2) x (4.5 s)

change in velocity = -45 m/s east

Note that the velocity is negative because the dragster is slowing down, and it's still travelling east (i.e., in the positive direction).

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Need help on my homework! Thanks.

Answers

Answer: Noble Gases (Blue)

when one stationary object is replaced by another stationary object, the change between the two objects maybe perceived as the movement of a single object. this creates?

Answers

When one stationary object is replaced by another stationary object, the change between the two objects maybe perceived as the movement of a single object. This creates an optical illusion.

An optical illusion is defined as a visual phenomenon in which the information gathered by the eye is processed in a way that results in a false perception of reality or the visual impression of seeing something that is not present or incorrectly perceiving it. It is a misinterpretation of a visual stimulus caused by the brain's ability to misjudge sensory information.

It can happen when visual information is processed in the brain, and it can create an impression of movement that isn't there. This phenomenon occurs when an object is moving or when the eyes are moving around, but it can also happen when the object being looked at is stationary.

When one stationary object is replaced by another stationary object, the change between the two objects maybe perceived as the movement of a single object. This creates an optical illusion because the visual system is misled into thinking that the object is moving.

The brain continues to process visual information even when the object is stationary, creating the impression that the object is moving. This is why an optical illusion can be used to make a stationary object appear to move or to make a moving object appear to be stationary.

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If I heated up a glass of 100 grams of water, and the temperature changed from 25℃ to 31℃, how much heat was needed to do that (in calories)?

Answers

Answer:

6° because some heat is released out of surrounding. if 100 over six which is equal to sixtenn point four

Why are masses listed on the periodic table not whole #'s. Ex. 15.9999 for oxygen?​

Answers

The masses listed on the periodic table are not whole numbers because they represent the weighted average of all the naturally occurring isotopes of an element.

What are Isotopes ?

Isotopes are atoms of the same element that have different numbers of neutrons in their nuclei, resulting in slightly different masses. Since the abundance of each isotope in nature can vary, the weighted average takes into account the abundance of each isotope and their corresponding masses, resulting in a decimal value. For example, oxygen has three naturally occurring isotopes, with mass numbers of 16, 17, and 18.

Why only O-16 isotopes ?

The most abundant isotope is oxygen-16, but the other isotopes are also present in trace amounts, leading to a weighted average of 15.9994 amu (atomic mass units). This is why the mass listed on the periodic table for oxygen is 15.999, which is a rounded value of the weighted average.

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The masses listed on the periodic table are not whole numbers because they represent the average atomic mass of all the naturally occurring isotopes of an element, taking into account their relative abundances.

What are isotopes ?

Isotopes are atoms of the same element that have different numbers of neutrons in their nucleus, which affects their atomic mass. Some isotopes of an element are more abundant than others, and their relative abundances are taken into account when calculating the average atomic mass.

For example, oxygen has three naturally occurring isotopes: oxygen-16, oxygen-17, and oxygen-18. Oxygen-16 is the most abundant isotope, making up about 99% of all oxygen atoms. Oxygen-17 and oxygen-18 are much less abundant, but they still contribute to the overall atomic mass of the element.

The atomic mass listed on the periodic table for oxygen (15.9994) is the weighted average of the atomic masses of all three isotopes, taking into account their relative abundances. This average is not a whole number because the isotopes have different atomic masses and abundances, and their contributions to the overall average are weighted accordingly.

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in the heliocentric model of the solar system, one planet passing another in its orbit gives rise to ...

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In the heliocentric model of the solar system, one planet passing another in its orbit gives rise to gravitational forces.

It can also lead to an alteration in the planets' orbits. This is due to the gravitational forces produced by the interaction between the planets. A heliocentric model is a model of the solar system in which the sun is at the center and the planets orbit it. This model was first proposed by Nicolaus Copernicus, a Polish astronomer in the 16th century. He proposed this model after observing that it better explained the motions of the planets than the previous geocentric model, in which Earth was at the center and everything else revolved around it. An orbit gives rise to the gravitational force that causes a planet to continue to travel in a circle around the sun. It is also responsible for the gravitational pull between planets, which affects their orbits. A planet passing another planet in its orbit can also cause some gravitational perturbations in its orbit. This can lead to an alteration in the planets' orbits or cause their orbits to change slightly over time. The heliocentric model is currently the widely accepted theory of how our solar system is arranged. It states that the planets orbit the sun, which is a massive ball of hot gas at the center of the solar system. The sun's gravity is what keeps the planets in their orbits.

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if the average arterial pressure at your heart is a typical 100 mmhg , what is the average arterial pressure in your hands when they are held at your side? assume your hands are 60 cm below your heart.

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The average arterial pressure in your hands when they are held at your side is 47.5 mmHg.


The average arterial pressure in your hands when they are held at your side can be determined using the hydrostatic pressure formula, which is a function of height, gravity, and density. When the hands are held at the side, they are 60 cm below the heart, which means they are at a distance of 0.6 m.

The hydrostatic pressure formula is given by

P = ρgh

Where,

P is the pressure, ρ is the density, g is the acceleration due to gravity, and h is the height. We can assume that the density of blood is constant, and we can take the value of g to be 9.81 m/s², the standard acceleration due to gravity.

Therefore, the pressure at the heart is 100 mmHg, or 100/760 = 0.131 atm. The pressure in the hands can be calculated as follows:

P = ρghP = (1.06 × 10³ kg/m³) × (9.81 m/s²) × (0.6 m)

P = 6.26 × 10³ N/m²

P = 6.26 × 10³ Pa

P = 47.5 mmHg

Therefore, the average arterial pressure in the hands when they are held at the side is 47.5 mmHg.

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an electromagnetic wave is transporting energy in the positive y direction. at one point and one instant the magnetic field is in the positive x direction. the electric field at that point and instant points in the

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Energy is being transported in the positive y direction by an electromagnetic wave. The magnetic field is in the positive x direction at one spot and one moment. At that precise moment, the electric field is oriented in the "negative z" direction.


The given electromagnetic wave is transporting energy in the positive y direction. At one point and one instant, the magnetic field is in the positive x direction. Now we have to find the direction of the electric field at that point and instant. According to the right-hand rule, when the magnetic field is directed towards the positive x-axis, the electric field will be directed downwards along the negative z-axis. Therefore, the electric field at that point and instant points in the negative z direction.

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basic behavior: according to your data, does this resistance increase or decrease with voltage? a reasonable (and correct) thought is that the impact is really with temperature, as the light bulb heats up with more power going into it. how does your data imply resistance varies with temperature?

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Based on the given question, the resistance will: increase with the increase in voltage.

The reason behind this is that resistance and voltage have a direct relationship. As the voltage increases, the resistance also increases. This can be explained by Ohm’s Law which states that V= IR where V is voltage, I is current and R is resistance. As per the second part of the question, it is implied that the resistance varies with temperature.

The resistance of any material depends upon temperature, and a rise in temperature increases the resistance of the material. The light bulb acts as a resistor, and its resistance will increase as the temperature increases due to an increase in the temperature of the filament of the bulb.

The resistance is directly proportional to the temperature of the bulb, and it is represented by the equation

R = R₀ (1 + αt),

where R is resistance, R₀ is the resistance at a particular temperature, α is the temperature coefficient of resistance, and t is the temperature difference in Celsius.

Therefore, based on the data provided, it can be concluded that resistance increases with the increase in temperature which results in the heating of the light bulb, which is a resistor.

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for a given mass of gas at constant temperature, the volume of the gas varies inversely with pressure.a. 3Pb. P/3c. 3P/Td. 9P

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The volume of the gas varies inversely with pressure, and the correct answer is (b) P/3.

According to Boyle's Law, at a constant temperature, the volume of a gas is inversely proportional to its pressure. Mathematically, this can be expressed as:

PV = k

where P is the pressure of the gas, V is its volume, and k is a constant.

If we assume that the mass of the gas remains constant, then k is also constant. So we can write:

[tex]P_1V_1 = k and P_2V_2 = k[/tex]

where[tex]P_1 and V_1[/tex] are the initial pressure and volume, and [tex]P_2 and V_2[/tex] are the final pressure and volume.

If we divide these two equations, we get:

[tex]P_1V_1/P_2V_2 = 1[/tex]

Since[tex]V_1[/tex] is inversely proportional to [tex]P_1[/tex], we can write:

[tex]V_1 = k/P_1[/tex]

Similarly, [tex]V_2 = k/P_2.[/tex]

Substituting these values in the above equation, we get:

[tex](k/P_1)/(k/P_2) = 1[/tex]

Simplifying this, we get:

[tex]P_2/P_1 = V_1/V_2[/tex]

Since we are given that the temperature remains constant, we can assume that k is constant, and therefore:

[tex]V_1/P_1 = V_2/P_2[/tex]

If we let [tex]P_2 = 3P_1[/tex], then we get:

[tex]V_1/P_1 = V_2/(3P_1)[/tex]

Simplifying this, we get:

[tex]V_1/V_2 = 1/3[/tex]

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please help!!
If an object were in motion, how might you use a magnet to change the direction of its motion? Diagram the setup and explain your reasoning.​

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If the object in motion has some magnetic properties or contains a magnet, we can use another magnet to change its direction of motion by exerting a force on it through magnetic interaction. This principle is known as the Lorentz force.

Here's how we can set up the experiment:

Take a magnet and place it on a flat surface.

Take another magnet or the object with magnetic properties that is in motion.

Hold the magnet or the object in your hand and bring it close to the stationary magnet without touching it.

Move the magnet or the object towards the stationary magnet and observe its behavior.

If the magnet or the object has the same polarity as the stationary magnet, they will repel each other, and the motion of the object will be deflected in a direction away from the stationary magnet. If the magnet or the object has opposite polarity to the stationary magnet, they will attract each other, and the motion of the object will be deflected in a direction towards the stationary magnet.

Here's a diagram to help you visualize the setup:

                 N   S          N   S

       __________    __________

      |                       |  |                     |

      |   M1               |  |           M2     |

      |__________|  |__________|

              ( )                             ( )

               |                               |

        Motion              Stationary

        Object                 Magnet

In this diagram, M1 represents the motion object or magnet, and M2 represents the stationary magnet. The N and S represent the North and South poles of the magnets. The arrows indicate the direction of motion and the direction of the magnetic field.

As we move M1 towards M2, the magnetic interaction will exert a force on M1, causing it to change its direction of motion. The direction of deflection will depend on the polarity of the magnets.

Note: It's important to keep in mind that the magnetic force is only one of the many factors that can affect the motion of an object. Other factors such as friction, air resistance, and gravitational forces can also play a significant role.

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