Momentum, the product of a particle's mass and its velocity. Momentum is a vector quantity. It has both magnitude and direction. Isaac Newton's second law of motion states that the rate of change of momentum over time is equal to the force acting on a particle.
From Newton's second law, if a particle is subject to a constant force over a period of time, the product of that force and the time interval (momentum) equals the change in momentum. Conversely, the momentum of a particle is a measure of the time it takes for a constant force to come to rest.
We know, p = mv
Where, p = momentum
m = mass of object
v = velocity of the object
Since, momentum is directly proportional to the velocity of object:
p ∝ v
This means, that momentum increases with an increase in velocity.
If the velocity is constant, then:
p ∝ m
As the truck is losing some mass due the leakage of sand at a constant rate.
So, this decrease in mass leads in a decrease of momentum.
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Air loss in a single vehicle (not comb. vehicle) should not be more than _________with engine off and 'brakes on'.
a) 3 psi in one minute
b) 2 psi in 45 seconds
c) I psi in one minute
d) I psi in 30 seconds
an ice hockey puck is tied by a string to a stake on rough ice and slides around in a circle until it comes to a stop. what is the sign of the work done by the tension in the rope as it slides to a stop?
The rope slides to a stop with no work being done by the tension in the rope.
Which of Newton's equations of motion best describes how a hockey puck would move if there was no external force acting on it as it slid around the ice?first rule of Newton If not affected by a net external force, an item at rest or in motion maintains its state of motion at a constant speed.
A hockey puck striking is governed by what rule of motion?The First Law of Motion by Newton Ice hockey is a sport that can help us understand Newton's laws of motion. Until pushed to change its condition by a net force, an object stays at rest or moves at a constant speed (speed in a constant direction).
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suppose that requiring motorcycle riders to wear helmets reduces the probability of a motorcycle fatality from 0.3 percent to 0.2 percent over the lifetime of a motorcycle rider and that the cost of a lifetime supply of helmets is $500. it is efficient for the government to require riders to wear helmets if human life is valued at
The human life valuation based on the information is E. $500000 or more.
What is the human life valuation?It was illustrated that the motorcycle riders to wear helmets reduces the probability of a motorcycle fatality from 0.3 percent to 0.2 percent over the lifetime of a motorcycle rider.
Probability is the occurence of likely events. It is the area of mathematics that deals with numerical estimates of the likelihood that an event will occur or that a statement is true.
Since the cost of a lifetime supply of helmets is $500, the lifetime human life = = 500 / (0.3 - 0.2) × 100
= 500 / 0.1 × 100
= 5000 × 100
= 500000
The correct option is E.
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Complete question
Suppose that requiring motorcycle riders to wear helmets reduces the probability of a motorcycle fatality from 0.3 percent to 0.2 percent over the lifetime of a motorcycle rider and that the cost of a lifetime supply of helmets is $500. it is efficient for the government to require riders to wear helmets if human life is valued at:
A. $100 or more.
B. $150 or more
C. $500 or more.
D. $50000 or more.
E. $500000 or more.
Based on observations, which of the following statements about stars in the Milky Way is generally true?
The older the star, the lower its abundance of heavy elements.
The less massive the star, the older it is.
The older the star, the bluer its color.
The older the star, the faster its orbital speed.
The younger the star, the higher its mass
Stars in the Milky Way, the older the star, the lower its abundance of heavy elements.
An element is a substance that can not be damaged down into a simpler layout. They may be distinguished by means of a completely unique atomic range. The elements are organized via their atomic variety in the periodic table, which highlights elements with similar residences.
Carbon is the most important detail of existence. Without this detail, existence, as we are aware of it, might not exist. As you will see, carbon is a vital element in compounds essential for lifestyles.
Kinds of elements :
1.) The elements are categorized as metallic, non-metal, and metalloid.
2.) The intense left aspect factors inside the periodic desk are metals, for example, sodium, calcium, cesium, and many others.
3) Elements such as non-metals, carbon, chlorine, oxygen, and many others.
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FILL IN THE BLANK. power supplies all provide the same voltages to a system, such as 3.3v, 5v, and 12v. each of these can be referred to as a___, because each one comes from a specific tap within the power supply.
Linear regulated because each one comes from a specific tap within the power supply.
What are the four power supply stages?The four main processes shown in a block diagram of a regulated DC power supply are step down transformation, rectification, DC filtration, and regulation. Unregulated power supply and regulated power supply are the two categories that define DC power supply designs. The controlled power supply can be switched or linearly regulated.
What three types of power supplies are there?Battery-based, switched, or linear? Regulated power sources can be divided into three categories: battery-based, switching, and linear. Although switching and battery power have advantages, linear is the least complex of the three fundamental regulated power supply systems.
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What is the magnitude b of the magnetic field at the location of the charge due to the current-carrying wire?.
Using the right hand rule, it is possible to calculate the magnetic field direction at the site of the charge caused by the current-carrying wire.
In the simplest terms possible, what is a magnetic field?The region surrounding a magnet where the effects of magnetism are perceived is known as the magnetic field. To explain how the magnetic force is dispersed in the area surrounding and inside something magnetic in nature, we utilize the magnetic field as a tool.
How does the magnetic field function?The same poles resist one another whereas opposite poles are attracted to one another. The north-seeking poles of the iron's atoms line up in the same way when you rub it against a magnet.
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brightness is to light as ________ is to sound.
Brightness is to light as loudness is to sound.
What is Brightness?Brightness is the visual attribute by which a light source appears to emit or reflect light. In other words, brightness is the perception caused by the brightness of a visual object. Not necessarily proportional to luminance.
What is loudness?Loudness is often confused with volume. However, the two terms are completely different concepts. Loudness is a scientific measure of the amount or strength of sound. Loudness, on the other hand, is much more difficult to quantify as it is entirely subjective and based solely on your personal perception of sound. The frequency content, duration, and loudness of a sound are factors in how loudness is perceived.
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a stone is thrown horizontally from the top of a cliff 30m high with an itinal sped of 20, find the vertical speed of the stone as it hits the groudn
The molar mass of sulfur hexafluoride is 146 g/mol.
13. g of sulfur hexafluoride = 13 g / 146g/mol = 0.089 mol
The pressure of sulfur hexafluoride
P = nRT / V
P = 0.089 mol x 0.08206 Latm/mol/k x (10.0 + 273.15)K / 5.0 L
P = 0.41 atm.
The rate of change in position of an object in any course. Speed is measured because the ratio of distance to the time wherein the distance became included. Speed is a scalar amount because it has handiest route and no significance.
Velocity can be notion of as the rate at which an object covers distance. A quick-moving object has a high speed and covers a notably big distance in a given amount of time, whilst a sluggish-shifting item covers a relatively small amount of distance in the same amount of time.
The primary unit or the S.I. unit of velocity is m/s or ms¹.
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a block is pulled along a surface of negligible friction by a spring scale that exerts a force f on the block. the mass of the block is 4kg, and the spring scale reads 10n. which of the following free-body diagrams can be used to show the magnitude and direction of all the forces exerted on the block as it is pulled along the surface?
The correct free-body diagram is the one shown in option C
What is the correct free-body diagram?We know that the free-body diagram could be used to identify the forces that are acting on an object. We know that the normal force that acts on an object must be equal to the weight of the object and this is represented as lines of equal length on the free-body diagram.
We can now see that the correct free-body diagram is one in which the magnitude of the force weight and the normal force is the same. Now the force on the spring would be shown as the forward force.
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d. f3 should be similar for most vowels, but not all. for which vowels is f3 noticeably different than the rest? (
Vowels are pronounced from back to front, increasing the frequency of the second formant. For front vowels like I and rear vowels like [u], the second formant (f2) is more frequent than the other.
How often does a wave occur?The number of a wave's oscillations per unit of time, expressed in hertz, is what is known as frequency (Hz). The relationship between pitch and frequency is straightforward.
Who or what uses frequency?When describing the temporal rate of change seen in oscillatory and periodic phenomena like mechanical vibrations, audio signals (sound), radio waves, and light, frequency is a crucial metric utilized in science and engineering.
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consider the fairness properties of aimd. now, consider a scenario where two flows are competing at a bottleneck with capacity r, where each of them has the same rtt. using standard aimd, both flows will converge to a regime where each gets r/2. discuss how by changing their aimd formulas you can make them converge to 3r/4 and r/4.
By changing their AIMD formulas in this way, we can make both flows converge to 3r/4 and r/4 respectively.
What is AIMD?
The AIMD (Additive Increase, Multiplicative Decrease) congestion control algorithm is a type of feedback control in which the sender increases the window size by a certain amount (additively) after each round trip time (RTT) and then reduces the window size (multiplicatively) when it detects packet loss. This algorithm is used to ensure fair sharing of the network resources.
In the given scenario, if we want to make both flows converge to 3r/4 and r/4, we can modify their AIMD formulas. We can do this by changing the rate at which the window sizes increase (i.e. the additive increase) and decrease (i.e. the multiplicative decrease).
For the flow that should end up with 3r/4, we can reduce the rate of additive increase and increase the rate of multiplicative decrease. This will make the flow increase its window size more slowly and decrease its window size more quickly, resulting in it converging to a smaller window size of 3r/4.
For the flow that should end up with r/4, we can do the opposite, i.e. increase the rate of additive increase and reduce the rate of multiplicative decrease. This will make the flow increase its window size more quickly and decrease its window size more slowly, resulting in it converging to a smaller window size of r/4.
By changing their AIMD formulas in this way, we can make both flows converge to 3r/4 and r/4 respectively.
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Students are investigating charge separation in conductors. They have two initially neutral conducting spheres and two different kinds of cloths. The students want to determine if the cloths add the same kind of charge or opposite kinds of charge when rubbed on the spheres. Which of the following procedures will provide enough information to determine whether the cloths add the same or opposite charges?a. Rub one sphere with one cloth and the other sphere with the other cloth, and touch them together. Pull them slightly apart and see if they attract or repel.b. Rub one sphere with one cloth and the other sphere with the other cloth, and bring them close together without touching. See if they attract or repel.c. Rub each sphere once with one cloth then once with the other cloth, and touch them together. Pull them slightly apart and see if they attract or repel.d. Rub each sphere once with one cloth then once with the other cloth, and bring them close together without touching. See if they attract or repel.
Answer:
rgvy
Explanation:
urfgbv
the wall separating henri from his manager made it hard to hear what his manager was saying. the wall is an example of a(n) barrier.
The wall separating Henri from his manager made it hard to hear what his manager was saying, the wall is an example of a physical barrier.
Physical barrier is the environmental and natural condition that act as a barrier in communication in sending message from sender to receiver.
Organizational environment or interior workspace design problems, technological problems and noise are the parts of physical barriers.Surroundings, distance between people, time differences and faulty communication methods are factors that can create a physical barrier. Managers must quickly identify these factors to address their negative effects on productivity.Therefore the wall between Henri and his manager acts as a physics barrier which made it hard to hear what his manager is saying.
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The compound dinitrogen oxide is a gas at room temperature. The two elements found in a sample of this gas
The two elements found in a sample of compound dinitrogen oxide, which is a gas at room temperature are nitrogen and oxygen.
What is dinitrogen oxide?Dinitrogen oxide or nitrous oxide is commonly known as laughing gas,
Dinitrogen oxide is a chemical compound, an oxide of nitrogen with the formula N₂O.
At room temperature, this gas is colorless, non-flammable gas, and has a slightly sweet scent.
Dinitrogen oxide or Nitrous Oxide is also called laughing gas or happy gas due to its intoxicating effects when inhaled.
From the chemical formula of Dinitrogen oxide which is written as;
N₂O = two nitrogen atoms and on1 oxygen atom
The compound of Dinitrogen oxide is made of;
2 atoms of nitrogen and 1 atom of oxygen
Thus, the compound of Dinitrogen oxide which is a gas at room temperature is made of two element. These two elements contained by the gas sample are known as nitrogen and oxygen.
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Answer:
nitrogen and oxygen.
Explanation:
the reason is cause i got it right
what is the maximum mass of block a for which the system remains in static equilibrium? express your answer with the appropriate units.
Mass is one of the fundamental properties of an object in Physics, and is a measurement of how much matter there is in something.
How to finding Mass from Density and Volume?Look up the object's density. Density measures how tightly the matter in an object is packed together. Each material has its own density, which you can look up online or in a textbook. The scientific unit of density is kilograms per cubic meter (kg/m3), but you can use grams per cubic centimeter (g/cm3) for smaller objects.Matter is any substance that you can touch — anything that takes up physical space and has volume. Use this formula to convert between these units: 1,000 kg/m3 = 1 g/cm3The density of liquids is often measured in kilograms per liter (kg/L) or grams per milliliter (g/mL) instead. These units are equivalent: 1 kg/L = 1 g/mL.Example: Diamond has a density of 3.52 g/cm3. 2. Measure the object's volume. The volume is the amount of space the object occupies. Measure the volume of solids in cubic meters (m3) or cubic centimeters (cm3), and the volume of liquids in liters (L) or milliliters (mL). The formula for volume depends on the shape of the object. Refer to this article for common shapes.Use the same unit that appears as part of your density measurement.Example: Since we measured the density of diamond in g/cm3, we should measure our diamond's volume in cm3. Let's say our diamond's volume is 5,000 cm3. 3. Multiply the volume and density together. Multiply your two numbers together, and you'll know the mass of your object.[1] Keep track of the units as you do this, and you'll see that you end up with units of mass (kilograms or grams).Example: We have a diamond with volume 5,000 cm3 and density 3.52 g/cm3. To find the diamond's mass, multiply 5,000 cm3 x 3.52 g/cm3 = 17,600 grams.To learn more about Equilibrium refer to:
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The electric potential along the x-axis is V=100e−2xV, where x is in meters.
A) What IS E(x) at x=1.0 m?
B) What is E(x) at x=1.6m?
Express your answer to two significant figures and include the appropriate units.
A. The electric field E(x) at x = 1.0 m is 27.07 V/m
B. The electric field E(x) at x = 1.6 m is 8.15 V/m
What is electric potential?Electric potential is work done in moving a unit charge from one point to the other.
What is electric field?Electric field is the ofrce per unit charge acting at a point in an electric field.
A) What Is E(x) at x = 1.0 m?Given that the electric potential V = 100e⁻²ˣ V, the electric field is given by
E = -dV/dx = -d100e⁻²ˣ/dx
= -100de⁻²ˣ/dx
= -100 × -2 × e⁻²ˣ
= 200e⁻²ˣ
Since we require the electric field at x = 1.0nm, substituting the value of x = 1.0 into the equation, we have
E(x) = 200e⁻²ˣ
E(1.0) = 200e⁻²⁽¹⁾
E(1.0) = 200e⁻²
E(1.0) = 200/e²
E(1.0) = 200/7.3891
E(1.0) = 27.07 V/m
So, E(1.0) = 27.07 V/m
B) What Is E(x) at x = 1.6 m?Given that V = 100e⁻²ˣ V, the electric field is given by
E = -dV/dx = -d100e⁻²ˣ/dx
= -100de⁻²ˣ/dx
= -100 × -2 × e⁻²ˣ
= 200e⁻²ˣ
Since we require the electric field at x = 1.6 m, substituting the value of x = 1.6 into the equation, we have
E(x) = 200e⁻²ˣ
E(1.6) = 200e⁻²⁽¹°⁶⁾
E(1.6) = 200e⁻³°²
E(1.6) = 200/e³°²
E(1.6) = 200/24.533
E(1.6) = 8.15 V/m
So, E(1.6) = 8.15 V/m
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A bullet of mass 7.5 g that is moving at a speed of 483 m/s embeds itself into a tree, penetrating 19.4 cm into the wood.What is the magnitude of the average force, in N, exerted by the tree on the bullet? sig.gif?tid=4T78-AC-85-4A-844D-22357F =
The average force by which the bullet will hit the tree is F = 4.50945 × [tex]10^4[/tex] N .
Given : mass of the bullet = 7.5 gram
u or intial velocity = 483 m/s
v or final velocity = 0 m/s
h or height = 19.4 cm
v² = 2as + u²
0 = 38.8 a + 483 × 483
- 483 × 483/ 38.8 = a
thus acceleration = 6012.6 m/s²
F = ma
Thus on substituting the values we get
F = 7.5 × 6012.6
F = 45,094.5 N
or
F = 4.50945 × [tex]10^4[/tex] N
The magnitude of the average force is F = 4.50945 × [tex]10^4[/tex] N .
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6. suppose you apply a force of 1 n to block a and a force of 2 n to block b. does it follow that block b must have twice the acceleration of block a? justify your answer using newton's second law.
Yes, block b must have twice the acceleration of block a but Only if B has the same mass as A.
Acceleration is the rate of change of the velocity of an item with appreciation to time. Accelerations are vector portions. The orientation of an item's acceleration is given by the orientation of the net pressure appearing on that object.
Acceleration is the charge at which velocity modifications with time, in terms of each speed and route. A factor or an object moving in a straight line is accelerated if it quickens or slows down. movement on a circle is extended despite the fact that the rate is consistent because the course is continually changing.
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PLS HELP I ONLY HAVE 2 MINUTES PLEASE ONLY ANSWER IF YOU KNOW THE RIGHT ANSWER
_____ are the main form of fuel that is burned today in automobiles, industrial plants, and homes.
Carbon Monoxides
Nitrogen Oxides
Sulfur Oxides
Hydrocarbons
Answer:
Hydrocarbons
Explanation:
quizlet
wo pieces of clay are moving directly toward each other. one piece having mass 300~\text{g}300 g is moving to the right at a speed of 1~\text{m/s}1 m/s. the other piece has mass 600~\text{g}600 g and is moving to the left at a speed of 0.75~\text{m/s}0.75 m/s. when they collide, they stick together and move as one piece.
The percentage of the total initial kinetic energy that is lost during the impact is 11/17J. Because two bits of clay are travelling straight toward one another at a speed.
They stick together and move as a unit when they crash into each other. A moving object or particle's kinetic energy, which depends on both mass and speed, is one of its characteristics. The type of motion can be vibration, translation, rotation around an axis, or any combination of these. Kinetic energy is a type of energy that an item or particle possesses as a result of motion.
Piece weight is 300 g.
1 m/s for each piece's speed
The other portion weighs 600 g.
0.75 m/s is the speed of the other piece.
making use of the kinetic energy formula
K.E = 1/(m1+m2)v2 K.E = 1/(300*10-3+600*10-3)*(-0.5)2\s
K.E = 0.1125J
Energy wasted equals 11/17J - 0.1125/0.31875 energy lost
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The complete question is -
Two pieces of clay are moving directly toward each other. When they collide, they stick together and move as one piece. One piece having mass 300 g is moving to the right at a speed of 1 m/s. The other piece has mass 600 g and is moving to the left at a speed of 0.75 m/s. What fraction of the total initial kinetic energy is lost during the collision?
A long, horizontal wire Ab rests on the surface of a table and carries a current I. A horizontal wire CD is vertically above wire AB , and is free to slide up and down on the two vertical metal guides C and D ( as shown in Fig) .Wire CD is connected through the sliding contacts to another wire that also carries a current I , opposite in direction to the current in wire AB . The mass per unit length of the wire CD is λ. To what equilibrium height h will the wire CD rise. assuming that magnetic force on it is wholly due to current in wire AB ?
The equilibrium height to which the wire CD will rise is given by the expression h = μ₀I² / 2π λg
What is magnetic field ?A region in which the force of magnetism acts is known as the magnetic field, and it surrounds magnetic materials or a moving electric charge. Moving magnetic dipoles and electric charges produce a magnetic field, which acts as a force field on other nearby magnetic dipoles and moving charges.
Magnetic field at a distance h produced by a current carrying wire
B = μ₀I/ 2πh
Magnetic force due to the present current carrying wire can be calculated by the formula
F = B I L
And we also know that F = mg
On equating these mg = B I L
( μ₀I/ 2πh ) I = ( m/ I ) g = λg
thus we get the value of h as
h = μ₀I² / 2π λg
Thus, the equilibrium height to which the wire CD will rise is given by the expression h = μ₀I² / 2π λg .
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the modified mercalli intensity scale is used to measure _______.
Answer: Intensity of earthquakes
Explanation:
The Mercalli intensity scale is a scale to measure the intensity of earthquakes. Unlike the Richter scale, the Mercalli scale does not take into account the energy of an earthquake directly. Rather, they classify earthquakes by the effects they have.
Crane with 5 kW motor lifts the load evenly at a speed of 0.1 m/s. What is the weight of the cargo?
Answer: 0.5
Explanation:
what is mesothermal climates
Answer:
Mesothermal regions have moderate climates. They are not cold enough to sustain a layer of winter snow but are also not remain warm enough to support flowering plants (and, thus, evapotranspiration) all year.
Explanation:
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Label the spinal cord meninges and spaces. 02:00:12 Skipped Reset Zoom Subarachnoid Arachnoid mater Dura mater Subdural Pia mater space space 7
The label from superficial to deep, of meninges and their related spaces in the correct order are:
1. Dura mater
2. Subdural space
3. Arachnoid mater
4. Subarachnoid space
5. Pia mater
What is the proper sequence of the meninges, from the superficial to the deep?The brain and spinal cord are shielded by three layers of membranes called meninges. Pia mater is the thin inner layer. The arachnoid, a structure resembling a web and filled with fluid, is the middle layer and protects the brain. The durable outer layer is known as the dura mater.
The subdural space is the area that could be found between the arachnoid mater and the meningeal layer of the dura. The subdural space typically only exists in pathological conditions, similar to the epidural space.
Therefore, Between the dura mater of your spinal cord, the bones of your vertebral column, and the dura mater of your skull is a space called the epidural space.
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Thermodynamics 2 QUESTION 3 A stationary gas-turbine power plant operates on a simple ideal Brayton cycle with air as the working fluid. The air enters the compressor at 95 kPa and 290 K and the turbine at 760 kPa and 1100 K. Heat is transferred to air at a rate of 35,000 kJ/s. Compare the power delivered by for the following assumptions: a. assuming constant specific heats at room temperature b. accounting for the variation of specific heats with temperature.
Assuming constant specific heats at room temperature, the power delivered by gas-turbine power plant that operates on a simple ideal Brayton cycle with air as the working fluid is 15678.25 KW
P1 = 95 KPa
T1 = 290 K
T3 = 1100 K
P2 = P3 = 760 KPa
Qin = 35000 KJ / s
At constant specific heats at room temperature,
R = 0.287 KJ / Kg K
cp = 1.005 KJ / Kg K
cv = 0.718 KJ / Kg K
K = 1.4
Pressure ratio, rp = P2 / P1
rp = 760 / 95
rp = 8
Efficiency, η = Wnet / Qin
1 - 1 / [ ( rp )^( ( k - 1 ) / k ) ] = Wnet / Qin
Wnet = 35000 * 1 - 1 / [ ( rp )^( ( 1.4 - 1 ) / 1.4 ) ]
Wnet = 35000 * 0.44795
Wnet = 15678.25 KW
Therefore, the power delivered is 15678.25 KW
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TRUE/FALSE. before turning into a white dwarf, a star like the sun will spend most of its life as a main sequence star.
Before turning into a white dwarf, a star like the sun will spend most of its life as a main sequence star is a true statement.
Most of the time, the stars' positions in relation to one another remain constant. Convergence between Orion and Taurus is ongoing. Ursa Minor is never far from Draco. The stars appear to us as an endless backdrop painting in the sky that hardly moves in relation to one another.
As we revolve around the sun throughout the year, there are a few tiny movements. Stars farther away move more to the left and right than stars closer to us. Even if it only has a small effect, it makes sense. You'll notice that objects farther away from you move less in relation to you than ones that are closer to you if you keep your eyes fixed out into the distance as you stroll down the street.
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What can I do to make this less expensive, with less cargo damage, and with a sturdy shell condition? Anything less than the amount shown in the image.
The external part of the shell is made of fiberglass. This is probably very expensive. The production team of the above product should experiment with Graphene.
Why should Graphene be considered for the above project?It should be highlighted that graphene is already being utilized in transportation, medical, electronics, energy, defense, and desalination; graphene research is having a significant influence across a wide variety of sectors.
To put things in perspective, one square meter of normal paper is 1000 times heavier than graphene, while a single sheet of graphene large enough to cover a football field weighs less than a gram. Strongest. With a tensile strength of 150,000,000 psi, graphene outperforms steel and Kevlar.
Graphene, a single sheet of carbon atoms, has been hailed as the strongest substance known to man, 200 times stronger than steel, lighter than paper, and with amazing mechanical and electrical capabilities.
Given that graphene is formed of carbon, and carbon is in plentiful supply, it will very certainly be less expensive than fiberglass.
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Which process is required to allow a gravitationally-collapsing gas cloud to continue to collapse?.
Most of the cloud's thermal energy must be radiated away.
The cloud must constantly produce new dust particles. A collision with another cloud is required. Most of the cloud's thermal energy must be trapped there. Star formation depends significantly on angular momentum.
Low, dense clouds mainly serve to deflect solar energy and chill the Earth's surface. High, thin clouds mostly reflect incoming solar radiation; but, they also trap part of the infrared radiation that the Earth emits and reflect it back down, warming the Earth's surface.
The amount of emission from a cloud changes directly with its temperature in addition to being influenced by a number of other elements, including the thickness of the cloud and the composition of the cloud.
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Two carts on an air track have the same mass and speed and are traveling toward each other. If they collide and stick together, find the total momentum and total kinetic energy of the HINT (a) the total momentum O The final momentum is zero. The final momentum is half the initial momentum. O The final momentum is twice the initial momentum. O There is not enough information to tell. (b) the total kinetic energy O The final kinetic energy is zero. OO The final kinetic energy is half the initial kinetic energy. The final kinetic energy is twice the initial kinetic energy. O There is not enough information to tell. (c) Describe a different colliding system with this same final momentum and kinetic energy.
if they collide and remain united then the. Total momentum of the system is zero.
Total momentum by using the Principle of Momentum Conservation.
mVa-mVa=2Vb
final speed and total momentum of system =zero
p=0
Due to the inellastic impact and the same masses and speeds, the system's total kinetic energy is reduced to zero. Before and after a collision, the total kinetic energy are, respectively:
Ka=mv^2
Kb=0
Momentum is the result of a particle's mass and velocity. A vector quantity with both magnitude and direction is momentum. Isaac Newton's second equation of motion states that the force applied to a particle is equivalent to the time rate of change of momentum.
Any grouping of particles has a momentum equal to the vector sum of their momenta. A modification in one particle's momentum is perfectly balanced by a modification in the momentum of another particle, according to Newton's third law, which states that particles exert equal and opposite forces on one another.
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