Other molten metals such as iron. A magnetic field is produced when electrical charges pass through the Earth as a result of the Earth's spin, which also causes the core to spin.
What is magnetic field ?
It usually represents the region around the magnet where its force can be felt. We use the magnetic field as a tool to describe how the magnetic force is distributed in the space around and within something magnetic in nature.
A planet must fulfil three conditions in order to produce a magnetic field: 1) a molten, electrically conducting interior; 2) convection in the interior; and 3) a moderately rapid rotation. This sets up a process that is somewhat similar to a naturally occurring electrical generator, where the convective kinetic energy is converted to electrical and magnetic energy. Of the four terrestrial planets, Earth has the strongest magnetic field.
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A mass of 0.30 kg on the end of a spring oscillates with a period of 0.45 s and an amplitude of 0.15 m. Part A Find the velocity when it passes the equilibrium point. Express your answer with the appropriate units. 0 HA ? V= Value Units Submit Request Answer Part B Find the total energy of the system. Express your answer with the appropriate units. HA ?
The answer is k = 58.486.
Part A. V = 2.094 m/sec
Part B. E = 0.6579 J
Solution:
T = 2√m/k
T² = 4n²m/k
k = 4n²m/T² = 4n² x 0.30/(0.45)²
k = 58.486.
The total energy of a system is the sum of kinetic energy and gravitational potential energy, and this total energy is conserved in one orbital motion. A minimum velocity is required for an object to leave the planet and not return. The total energy operator is called the Hamiltonian operator H and consists of the kinetic energy operator and the potential energy operator. The total energy at any stage of a moving fluid is the sum of the internal static velocity and potential energies at that stage.
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21. The coefficient of friction acting upon a 1500 kg car is 0.75. The car is making a 180-degree turn around a curve with
a radius of 25 meters. Determine the maximum speed with which the car can make this turn.
a. 187.5 m/s
b. 209.44 m/s
c. 13.69 m/s
d. 7.5 m/s
The maximum speed with which the car can make the turn is 13.69 m/s (Option C)
How do I determine the maximum speed?We'll begin by obtaining the force. This can be obtained as follow:
Mass (m) = 1500 KgAcceleration due to gravity (g) = 10 m/s²Normal reaction (N) = mg = 1500 × 10 = 15000 NCoefficient of friction (μ) = 0.75Force (F) = ?F = μN
F = 0.75 × 15000
F = 11250 N
Finally, we shall determine the maximum speed. Details below:
Radius (r) = 25 metersMass of car (m) = 1500 KgForce (F) = 11250 NMaximum speed (v) =?F = mv²/r
11250 = (1500 × v²) / 25
Cross multiply
1500 × v² = 11250 × 25
Dive both sides by 1500
v² = (11250 × 25) / 1500
Take the square root of both sides
v = √[(11250 × 25) / 1500]
v = 13.69 m/s
Thus, the maximum speed is 13.69 m/s (Option C)
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Correctly identify the bones of the skull. Frontal bone Sphenold bone Vomer Temporal bone Inferior concha Parietal bone Mandible Zygomatic bone Lacrimal bone Ethmoid bone Frontal bone Maxilla Nasal bone Nasal bone
The bones of the skull includes the following:
Frontal boneSphenoid boneTemporal bone Parietal bone Ethmoid boneWhat is the frontal bone?
The frontal bone in an adult is an unpaired bone that is a part of the boney structure that forms the anterior and superior portions of the skull.
The frontal bone consists of two parts which are
the vertically oriented squamous part, and the horizontally oriented orbital part,These two parts makes up the bony part of the forehead, part of the bony orbital cavity holding the eye, and part of the bony part of the nose respectively.
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A chef drop a pumpkin pie of ma 1. 7kg from a height of 1. 875 meter. How long doe it take the pie to hit the ground?
If a chef drops a pumpkin pie of mass 1.7 kg from a height of 1.875 meter, the time taken by the pie to hit the ground is 0.62 s
According to equations of motion,
s = ut + 1 / 2 at²
s = Distance
u = Initial velocity
t = Time
a = Acceleration
Since it is dropped,
u = 0
g = 9.8 m / s²
s = 1.875 m
s = ut + 1 / 2 at²
1.875 = 0 + ( 1 / 2 * 9.8 * t² )
t² = 1.875 / 4.9
t² = 0.385
t = 0.62 s
Therefore, the time taken is 0.62 s
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An Object's Moment Of Inertia Is 2.0kg?M2 . Its Angular Velocity Is Increasing At The Rate Of 3.8rad/S Per Second. What Is The Net Torque On The Object?
The Net Torque On The Object =7.6 N-m.
The force will cause a torque. The net torque is the sum of the person torques. Rotational Equilibrium is similar to translational equilibrium, where the sum of the forces are same to zero. In rotational equilibrium, the sum of the torques is equal to zero.
The individual torques upload to provide a internet torque approximately the axis. when the ideal sign (fine or bad) is assigned to the magnitudes of character torques approximately a designated axis, the internet torque approximately the axis is the sum of the character torques: →τnet=∑i|→τi|.
Solution:-
Torque= momentInertia*angularacceleration
=> torque= 2.0 x 3.8
=>torque =7.6 N-m
here,
Angular acceleration ,
a = 3.8rad/s^2
then
Torque = I * a = 2 * 3.8 = 7.6 N.m
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identify a control commonly used by organizations during the output design phase of the physical systems design stage of developing a new system to avoids expensive time delays later in the SDLC process
requesting users' signatures on a document confirming their acceptance of the output form and content design
Which task in the physical design phase of the systems development life cycle (SDLC) takes the longest?Program Development: One of the SDLC's most time-consuming tasks is program development. It is best to use an organized programming process.
The last step in the systems development life cycle is which of the following?Once the implementation phase is over, the last step begins. The system has a defined support approach in place for the maintenance phase.
Which of the following activities takes place during the software development life cycle's system planning and designing phase?The system planning and designing phase of the SDLC includes the parallel run, sizing, and specification freeze phases.
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Match the hormone abbreviations with their function. Match the hormone abbreviations with their function. 166 points TRH Астн ADH PRL (2 015744 Match each of the options above to the items below Stimulates ovulation Stimulates production of TSH and PRL Stimulates secretion of anti-stress hormones Stimulates milk synthesis Stimulates water retention
The hormone abbreviations with their function:
TRH = Stimulation of anti stress hormones
АCTH = Stimulates production TSH and PRL
ADH = Stimulates water retention
PRL = Stimulates milk synthesis
LH = Stimulates ovulation
What are hormones?Hormones are your body's chemical messengers. They travel to tissues and organs through bloodstream. They work slowly over time and affect various processes such as: growth and development. Metabolism - how your body gets energy from what you eat. Hormones play a major role in normal function. They are called chemical messengers because they carry information from the endocrine glands to different parts of the body. They control heart rate, sleep cycles, sexual function, and reproduction. Metabolism, appetite, growth and development, mood, stress, and body temperature are all influenced by hormones.
Endocrine glands release hormones into the bloodstream. This allows the hormone to move to cells in other parts of the body. Endocrine hormones help regulate mood, growth and development, organ function, metabolism and reproduction. The endocrine system regulates the amount of each hormone released.
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The complete question is as follows:
Our solar system was created by the gravitational collapse of the _____.
Answer:
Solar Nebula?
Explanation:
Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. The cloud collapsed, possibly due to the shockwave of a nearby exploding star, called a supernova. (I thought everyone knew this.)
a 1 mci source of 60co is placed in the center of a cylindrical water-filled tank with an inside diameter of 20 cm and depth of 100 cm. the tank is made of iron with a wall thickness of 1 cm. what is the uncollided flux density at the outer surface of the tank nearest the source? you will need data from appendix d of the course text. making the right assumption(s) simplifies the calculation.
The uncollided flux density at the outer surface of the tank nearest the source is Ψ• = 3.4 x 10^4 MeV/cm^2.s
In this formula, C represents the source's activity at that precise moment, and 24rCE= is the energy fluence.
We must ascertain what level of activity passes through the shielding since it will diminish when the gamma rays pass through the water and iron.
Using 1.25 MeV as the average 60Co energy will make things simpler. With regard to water and iron, the attenuation coefficients for 1.25 MeV is the energy fluence are 0.06 cm2/g and 0.058 cm2/g, respectively. first figuring out the intensity, then the iron
I = 1 x 10^-3 x 3.3 x 10^10 x e^(-0.06x1.1) x e^-0.058x7.861
I = 2.6x 10^7 Bq
That is what the cylinder is producing. Using a total radius of 11 cm to calculate the uncollided flux density energy fluence
Ψ• = CE/4πr^2 = 2.6 x 10^7 x 2 x 1.25/4π x 11^2
Ψ• = 3.4 x 10^4 MeV/cm^2.s
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What would be the height of the atmosphere if the air density (a) were uniform and (b) decreased linearly to zero with height? Assume that at sea level the air pressure is 1.0 atm and the air density is 1.3 kg/
The height of the atmosphere would be 7951.33 m.
We are given that,
Pressure = P = 1 atm
Air density = ρ = 1.3 kg/m³
Therefore, the height of the atmosphere when the density is constant can be calculated by,
P = ρ g h
We know that pressure at sea level = 1 atm = 101300 Pa
Thus , putting the values in the above equation,
h = (101300 Pa)/(1.3 kg/m³)(9.8m/s²)
h = 7951.33 m
Therefore, the height of the atmosphere would be 7951.33 m, when the air density is constant.
Note : the correct order of the question is,
Assume that at sea-level the air pressure is 1.0 atm and the air density is 1.3 kg/m3.(a) What would be the height of the atmosphere if the air density were constant?(b) What would be the height of the atmosphere if the air density decreased linearly to zero with height?
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A reasonably uniform magnetic field over a limited region of space can be produced with the Helmholtz coil, which consists of two parallel coils centered on the same axis. The coils are connected so that they carry the same current I. Each coil has N turns and radius R, which is also the distance between the coils.
(a) Find the magnitude of the magnetic field at any point on the z-axis shown in the accompanying figure. (Use any variable or symbol stated above along with the following as necessary: z and µ0. Assume the origin is located halfway between the coils.)
(b) Show that dB/dz and d 2B/dz2 are both zero at z = 0. (These vanishing derivatives demonstrate that the magnetic field varies only slightly near z = 0.)
According to the formula, 2 moles of Co will magenetic produce 2 mole of CO2 and 1 mole of O2 prednisone will produce 2 moles of CO2. This is 602 for 1 mole. 0.5 mol of O2 is consumed. 0.344/2 = 0.172 mol
mol O2 is required, so O2 has a limiting reagent, so O2 mol has 0.172 mol, 0.344, therefore Co
: mol CO₂ production= 0.196 Particles
grams CO₂ production = 0.196 • Hook x 44.01 g CO₂ = 8.6259 g.Co₂
grams CO₂ 2.63 g = 863
5.50G 5.50G
MOL VON LA H 5,50 x I Mol 5,998 15.444
444 444
444
444
444
444
44
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mol CO = massmolar mass 5,50 g xX I mol
28-018 444 4 =4 mol 4
mols of la H 5.50 x × I mols
5.998 15.
0.344 mol. It represents the absolute or relative direction or magnitude that an object is moving in the sense of motion. Used to describe the size or extent of something. In physics, size generally refers to entities.
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At what radial distance from the center of a toroid of 300 windings does the magnitude of the magnetic field equal that found inside a solenoid that has 400 turns per meter of length? Assume that the current is the same through both devices.The magnitude of the magnetic field inside a toroid of total Ntturns and carrying a current I is, Bt=μ0NtI2πs, where s is the distance of the field point from the center of the toroid. The magnitude of the magnetic field inside a solenoid of Ns turns per unit length and carrying a current I is Bs=μ0NI. So if for a value of s, the magnetic field inside a toroid and a solenoid are the same, then the value of s can be found by using the equation, μ0NtI2πs=μ0NsI.
The radial distance from the center of the toroid is 12 cm such that the magnitude of magnetic field through the toroid is equal to that found inside the solenoid.
It is given to us that -
The toroid has 300 windings
The solenoid has 400 turns per meter of length
We have to find out the radial distance from the center of the toroid if the magnitude of the magnetic field is equal to that found inside the solenoid.
We know that the magnitude of the magnetic field inside a toroid is given by -
[tex]B_{t} =[/tex] (μ₀[tex]N_{t}[/tex]I)/(2[tex]\pi[/tex]s) ------ (1)
where,
s = radial distance from the center of the toroid
I = current flowing through the toroid wire
[tex]N_{t}[/tex] = total turns in the toroid
We also know that the magnitude of magnetic field inside a solenoid is given by -
[tex]B_{s} =[/tex] μ₀[tex]N_{s}[/tex]I ----- (2)
where,
[tex]N_{s}[/tex] = turns per unit length of the solenoid
I = current flowing through the solenoid
Now, it is given to us that the magnitude of magnetic field at a radial distance of s inside the toroid is equal to the magnitude of magnetic field inside the solenoid.
=> [tex]B_{t} =[/tex] [tex]B_{s}[/tex]
=> (μ₀[tex]N_{t}[/tex]I)/(2[tex]\pi[/tex]s) = μ₀[tex]N_{s}[/tex]I
Since it is given that the current is same through both toroid and solenoid, the above equation can be written as -
=> [tex]\frac{N_{t}}{2\pi s} =N_{s}[/tex]
[tex]= > \frac{300}{2\pi s} =400\\= > 800\pi s=300\\= > s = \frac{300}{800\pi } \\= > s = 0.11 m\\= > s = 12 cm[/tex]
Thus the radial distance from the center of the toroid is 12 cm such that the magnitude of magnetic field through the toroid is equal to that found inside the solenoid.
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if an object is moving eastward and slowing down, then the direction of its velocity vector is .
If an object is moving eastward and slowing down, then the direction of its velocity vector is east.
Understanding the idea of the velocity vector and how it significantly relates to that of position is necessary in order to solve the given problem. There will be some direct relationship between the distance traveled by the object and the magnitude of velocity at the same time interval since the mathematical relation for velocity is given by differentiating the expression for the distance traveled at any time instant.
Any object that has a tendency to move in a particular direction will also have a corresponding velocity vector. According to the concept presented, the object's velocity vector will also be moving in an easterly direction in the given situation since it is moving in that direction.As a result, it is inferred that an object moving in an easterly direction will also have its velocity vector point in that same direction.To understand more about velocity -
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Jupiter's _____ _____ ______ is a giant storm about three times wider than the diameter of Earth and at least 100 years old.
Jupiter's great red spot is a giant storm about three times wider than the diameter of Earth and at least 100 years old.
A massive storm larger than Earth that has been raging for hundreds of years is Jupiter's famous Great Red Spot.
Numerous moons orbit Jupiter around it. Jupiter also has a number of rings, but they are much fainter and made of dust rather than ice, unlike the well-known rings of Saturn.
It is mostly Jupiter's fault that it is difficult to comprehend the Great Red Spot. Jupiter is a gas-dominated planet that is a thousand times larger than Earth. Its core is surrounded by a liquid ocean of hydrogen, and the atmosphere is primarily made up of helium and hydrogen.
Jupiter's clouds also make it difficult to make precise observations of its lower atmosphere. While some studies of Jupiter have looked at regions in its lower atmosphere, orbiting telescopes and probes studying the Great Red Spot can only see clouds dispersed high in the atmosphere.
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Calculate the approximate velocity of a space shuttle orbiting around the earth at a height 3.6 x 106 m. M???? = Mass of the Earth = 6 x 1024 kg R????= Radius of the Earth = 6.4 x 106 m G = Gravitational Constant = 6.674 x 10-11 m3s-2kg-1
The approximate velocity of a space shuttle orbiting around the earth at a height 3.6 x 106 m is 22.14 km/s.
Velocity is the directional pace of an item in motion as an indication of its rate of exchange in the role as determined from a selected frame of reference and as measured by way of a selected standard of time.
Calculation:-
V = √2GMe/Re
= √2×66×⁻¹¹ × 8 × 10²⁴ / 2 × 6.4 × 10⁶
= 2× 11.18 × 10³
= 22.14 km/s
Average velocity is defined as the trade in position or displacement (∆x) divided by the time durations (∆t) wherein the displacement takes place. The common velocity can be effective or negative depending upon the sign of the displacement. The SI unit of average velocity is meters per second (m/s or ms-1).
Average velocity is calculated by means of dividing your displacement (a vector pointing out of your initial role in your final position) through the entire time; the average pace is calculated by way of dividing the overall distance you traveled by means of the total time.
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why do we say that force is a vector quantity
Force is a vector quantity because its acceleration times a scalar constant (mass) equals the force (a vector quantity).
Why is force considered a vector quantity?The product of an object's mass and acceleration is used to calculate the force acting on it. A vector quantity is acceleration. Since force is a scalar constant (mass) multiplied by acceleration, which is a vector quantity, force is also a vector quantity (a vector quantity).
Because it genuinely depends on the direction in which a force is applied, force can be thought of as a vector quantity. Physically, the force can be felt as a push or a pull. This is illustrated by many physical examples.
For instance, it makes sense that we must push an object upward in order to make it move upward. It simply remains fixed if we push it downward. Knowing which direction it is pushed is crucial.
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What three factors determine the amount of voltage induced into a conductor?
1.The turns of wire.
2.The strength of the magnetic field.
3.The speed of the cutting action.
Three factors that determine the amount of voltage induced into a conductor are : size of the magnetic field, active length of the conductor and speed at which the conductor passes through the field.
What are the factors that determine amount of voltage induced in a conductor?Faraday's Law explains that inducing a voltage in conductor can be done by either passing it through a magnetic field or by moving the magnetic field past the conductor and if the conductor is part of a closed circuit, an electric current will flow.
Coils of wire are used to increase the induced voltage and current because the EMF generated is proportional to the time rate of change of magnetic flux as per Faraday's Law.
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PLEASE ANSWER WILL MARK BRAINLIEST IF YOU EXPLAIN HOW YOU GOT THE ANSWER!!!!!!
I’m not sure if the answer I chose is correct or not
If there is a decrease in the angle of inclination, the acceleration would decrease accordingly.
What is the acceleration?We know that the acceleration is the change in the velocity of the object with time. Given that the mass of the pulley remains the same and the puly is being moved up the incline as we can see.
We have to also recall that we have been told that the incline is frictionless and as a result we are not going to consider the frictional force. In any case, the force that moves the pully along the incline stull depends on the angle of inclination.
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The purpose of the area divider is to:
a.) accomodate large differential movemenets between adjoining... b.) accomodate some movement in the membrane itself c.) channel water toward roof drains d.) channel water toward scupper drains. e.) help the membrane...
The purpose of the area divider is to accommodate some movement in the membrane itself.
Essentially, a classical particle cannot cross a potential barrier. According to the quantum theory, an exponential with a negative real exponent describes how a particle's motion continues under a barrier. Such a function degrades quickly, and if the width (or height) of the barrier is significant, the amplitude of the wave function behind the barrier is insignificant, making it impossible for a particle to pass through the barrier.
However, the exponent retains an appreciable value behind a relatively narrow and/or low barrier, indicating that a particle may exist there. The likelihood of a particle passing through a barrier is given by the square of the ratio between the transmitted wave's amplitude behind the barrier and the incident wave's amplitude. The transparency of the barrier is the name given to this value.
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what is example of energy in the form of motion
Answer:
The wind is an example of motion energy. A dramatic example of motion energy is a car crash—a car comes to a total stop and releases all of its motion energy at once in an uncontrolled instant.
Explanation:
Please give the brainliest.
the perception of flashing lights on a christmas tree as continuous movement can be explained by the optical illusion
The perception of flashing lights on a christmas tree as continuous movement is due to optical illusion.
Perceptual Illusions: the misinterpretation of a real external, sensory experience. The action of deceiving, especially by appearances. An instance of the sense perception of an external object suggesting a false belief as to its nature.
Induced Motion: an illusion of motion, experienced because we have a strong tendency to assume that the object moves, while the background is stationary.Optical Illusions: an instance of something having an appearance so resembling something else as to deceive the eye; mental misapprehension caused by this. An illusion of vision usually affecting “spatial” relations. Also referred to as ‘visual illusions.’Somatic Illusions: tricks used to make parts of your body feel like they are growing, shrinking, bending, etc. Examples (include) ‘Pinocchio,’ ‘Shrinking Waist,’ ‘Doorframe,’ and ‘Rubber Hand.’To know more about optical illusions visit:
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Salt water is more dense than fresh water. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of salt water displaced by the ship A.is less than the volume of fresh water. B.is greater than the volume of fresh water. C.is the same as the volume of fresh water. D.cannot be compared without knowing the mass & volume of the ship.
Answer:
Buoyant force B = V * ρ volume * density
Since the buoyant force is the same in both cases (salt & fresh)
a smaller volume is required when the density of the displaced water is greater
(A) is correct
Energy efficiency strategies are based on the assumption that consumers will be willing to pay more in exchange for reduced energy use.
On the premise that consumers will be prepared to pay more in exchange for using less energy, energy efficiency measures are based.
What do you think of the American Council for an Energy Efficient's strategy?Energy efficiency policies, programs, technologies, investments, and habits are advanced by ACEEE through research and outreach. In the future, we want energy efficiency to contribute to the US's economic success, energy security, and environmental sustainability.
How is utilizing multiple policy instruments more effective than use just one?How is utilizing multiple policy instruments more effective than use just one? Wider coverage is possible when many policy instruments are used. Cotton was created by Eli Whitney.
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which sublevels are in each of the following principal energy levels? (a) n = 1 (b) n = 2 (c) n = 3 (d) n = 4
The outermost energy shell of the atom, where the electrons are situated in relation to the nucleus. the energy levels are- 1 (only"s"), 2 ("s","p"), 3 ("s","p","d"), 4 ("s", "p", "d", "f").
Describe the concept of energy levels.An atom's energy level is the set distance between its nucleus and any potential location for electrons. Additionally, energy levels might be compared to a staircase's steps.
What exactly does low energy mean?Most major diseases, including heart disease, many types of cancer, autoimmune diseases like lupus and multiple sclerosis, and anemia, commonly manifest with a lack of energy (too few red blood cells). Another typical indicator of depression and anxiety is fatigue. Additionally, a side effect of several drugs is weariness.
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How long will it take this wave to travel 3000 m in the x-direction? 0. 42 seconds 2. 0 seconds 2. 4 seconds 4. 8 seconds.
The wave's period T is defined as the amount of time it takes for one crest to cover this distance. The distance to a crest is known as the wave speed (or phase velocity).
How far does each period of a wave go?A pulse in a periodic wave moves over a distance of one wavelength in a period of time T. The speed v of the wave can be expressed in terms of these quantities. This relationship holds true for any periodic wave.
Which change will decrease the speed of a sound wave traveling through a gaseous matter quizlet?Which change will decrease the speed of a sound wave traveling through a gaseous matter? deceasing the temperature. An FM radio station broadcasts at 9.23 × 107 Hz.
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It takes a snail 10 seconds to move 1 centimeter. Clear check how far can the snail move in 2 seconds? centimeters how long will it take the snail to move 2. 5 centimeters? seconds.
A centimeter will be moved by the snail in 10 seconds as opposed to a centimeter being moved in 2 seconds. Accordingly, the snail advances 1 centimeter every 10 seconds.
Why is travel important to life?Traveling is important because it will expose you to a different way of being and living. You'll encounter different people, places, and cultures when traveling, which can give you a wider perspective. A lot of learning and personal growth may occur while traveling.
Why do you love to travel?Nothing is more thrilling than traveling to discover new things and create enduring memories, whether it be by vehicle or by airline. The most fulfilling aspect of traveling is meeting individuals from all around the world. The discussions will increase understanding and might create more significant prospects.
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we've seen that squid can escape from predators by ejecting water. some squid do this at the surface of the ocean, thus launching themselves into the air-a particularly effective escape strategy. (figure 1) suppose a 36 kg squid (not including water) at rest at the surface of the water brings in and quickly ejects 3.0 kg of water to achieve a takeoff speed of 3.5 m/s; these are typical numbers.
The law of conservation of momentum states that when two or more bodies act on each other in an isolated system, their total momentum remains constant unless an external force acts on them. Therefore, it can neither be created nor destroyed.
m₁v₁ = m₂v₂
For the given question:
m₁ = mass of squid (36 kg)
v₁ = velocity of squid (3.5 m/s)
m₂ = mass of water (3.0 kg)
v₂ = velocity of water
Substitute the values:
36 × 3.5 = 3.0 × v₂
v₂ = 42 m/s
The maximum range:
R = (v₂)²/ g
where,
g = 9.8 m/s² and launch angle 45°
R = 3.5²/9.8
R = 1.25 m
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The complete question is as follows:
We've seen that squid can escape from predators by ejecting water. Some squid do this at the surface of the ocean, thus launching themselves into the air-a particularly effective escape strategy. Suppose a 36 kg squid (not including water) at rest at the surface of the water brings in and quickly ejects 3.0 kg of water to achieve a takeoff speed of 3.5 m/s; these are typical numbers.
At what speed does the squid eject the water?
If we ignore lift and drag forces as the squid flies through the air, what is the maximum horizontal range that the squid can achieve before splashing down?
Which of the following is not one of the three major categories of galaxies? A Elliptical galaxies B. Globular galaxies O C Irregular galaxies O D. Spiral galaxies
Globular galaxies of the following is not one of the three major categories of galaxies.
The correct option is B.
What is galaxies and its types?Astronomers classify galaxies into three basic categories: elliptical, spiral, and erratic. These galaxies come in a wide range of sizes, from star clusters with as few as 100 million stars to massive galaxies with more than a trillion stars.
How do galaxies develop?Massive gas clouds that fall and rotate are the starting point for galaxies. Stars develop within them as they develop. The collision of entire galaxies can alter their appearance. We can view galaxies at early phases of development by gazing deep into space, which helps us understand how galaxies evolve.
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a spehere with a mass m and a radius r rolls down a ramp that makes an angle theta with the horizontal
The acceleration of the roll ramp is a = mR² sinθ / I + mR²
The mass of the given object is m
And the radius of the given object is r
the angle of the ramp is given as θ
The expression to calculate the given equilibrium of the object :
mgsinθ - f = ma
this implies f = m( a + gsinθ)
Here we can write
I a' = fR
a' = ( m ( a + gsinθ) ) R / I
The expression without the value of friction can be written as
a = Ra'
Substitute the values in the above expression and we will get:
I a = mR² ( a + gsin θ )
On further solving it by opening the brackets we get
a = mR² sinθ / I + mR²
The acceleration of the roll ramp is a = mR² sinθ / I + mR²
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which statements are true concerning a substance with a high specific heat? select one or more: the substance cools down slowly after heating. an example substance is aluminum metal. the substance easily gets hot when heat is applied. an example substance is water.
The statement that is true concerning a substance with high specific heat is as follows: the substance cools down slowly after heating. an example substance is aluminum metal (option A)
What is specific heat?Specific heat or specific heat capacity refers to the heat capacity per unit mass of a pure substance.
In other words, specific heat is defined as the amount of heat needed to increase the temperature of 1kg of a material by 1K and is expressed in terms of J/kg·K or equivalently J/kg·°C.
The specific heat capacity of a material is a physical property. It is also an example of an extensive property since its value is proportional to size.
Water is an example of a substance that has an extremely high specific heat capacity, which makes it good for temperature regulation.
Therefore, a substance with high specific heat cools down slowly after heating and an example is aluminum metal.
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