4. Which of the following phenomena is explained by the effects of temperature on a gas?
the tire pressure monitor on your car lights up on a cold winter day
a balloon being blown up with a helium tank
water boils differently at sea level than at high elevations
a balloon popping as it is taken up a mountain
Answers
1. the tire pressure monitor on your car lights up on a cold winter day
2. a balloon popping as it is taken up a mountain
Related Questions
Consider a 75.5-kg man standing on a spring scale in an elevator. Starting from rest, the elevator ascends, attaining its maximum speed of 1.65 m/s in 0.675 s. What does the spring scale register in pounds during these 0.675 s?
Answers
Answer:
208.08 pounds
Explanation:
Given that,
Mass of a man, m = 75.5 kg
Starting from rest, the elevator ascends, attaining its maximum speed of 1.65 m/s in 0.675 s.
We need to find the value of spring scale during these 0.675 s.
As the elevator ascends, net force will be given by :
F = mg + ma
a can be calculated as follows :
\(a=\dfrac{1.65-0}{0.675}\\\\a=2.45\ m/s^2\)
So,
F = 75.5[(9.81) + (2.45)]
F = 925.63 N
We know that,
1 N = 0.224 Pounds
It means, 925.63 N = 208.08 pounds
So, the spring scale will register 208.08 pounds.
Which is the correct order that these theories emerged from earliest to latest
Answers
Answer:
Behavioralsm, psychodynamic, humanistic, cognitivism.
Two point charges are separated by 12cm what is the force between them
Answers
Answer:
Coulomb's law calculates the magnitude of the force F between two point charges, q1 and q2, separated by a distance r. F=k|q1q2|r2.
Explanation:
Please help will mark brainiest!!!
The sun is also the reason .... exist. The.... is moving air.
The same word fills in both blanks
Answers
Answer:
The word is "wind".
Explanation:
The sentence would be:
"The sun is also the reason wind exists. The wind is moving air."
Hope this helped !
Part A - At what angle does it leave?
Part B - At what distance x does it exit the field?
Answers
Answer:
Total internal reflection (TIR) is the phenomenon that involves the reflection of all the incident light off the boundary. TIR only takes place when both of the following two conditions are met: the light is in the more dense medium and approaching the less dense medium.
Explanation: Hope i helped!!!
A mass m, which is connected to a spring of spring constant k, is released from x = A to perform
a simple harmonic motion. Another mass 2m, which is connected to another spring of the same
spring constant k, is also released from x = A to perform a simple harmonic motion. Compare the
values of total mechanical energy stored in these two spring-mass systems.
Answers
7. Apply Concepts: suppose the dog walked at a constant speed the whole way. What
would the graph look like then? Explain.
Answers
If the dog walked at a constant speed the whole way, the graph of the dog's position versus time would be a straight line. This is because the dog's velocity (which is the derivative of position with respect to time) would be constant, and the acceleration (which is the derivative of velocity with respect to time) would be zero.
What is the speed about?A straight line on a position-time graph indicates that the object is moving at a constant velocity. The slope of the line would be equal to the velocity of the dog.
If the graph is a horizontal line, it would indicate that the dog is at rest. If the line slopes upward, the dog is moving in the positive direction (for example, to the right in a position-time graph), and if the line slopes downward, the dog is moving in the negative direction.
In all, A constant speed means a constant velocity and the line is a straight line with a particular slope.
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Hi
Please help on question asap if the answer is correct I'll rate you five stars a thanks and maybe even brainliest!
When two light bulbs are connected in series, the resistance in the circuit is increase compared to that with one lightbulb. The increased resistance opposes the flow of current so far fewer electrons pass per second , transferring less energy. The lightbulbs are therefore not as bright as In a circuit with same voltage but only one bulb.
However, when Two lightbulbs are connected in parallel, each loop behaves like a separate circuit . The resistance in each branch is the same as if there were just one light bulb in the whole circuit.there is the same current in each branch of the circuit ,so the bulbs Will light up with the same brightness as a single bulb circuit. The energy stored in the battery will decrease twice as quickly and battery will run out faster than I series circuit.
6) explain the advantages and disadvantages of arranging components in series or parallel.
Answers
Advantages of Components Arranged in Series:
1. Increased resistance: Connecting components in series increases the overall resistance in the circuit. This can be advantageous in situations where you want to limit the flow of current or control the amount of power being dissipated.
2. Voltage sharing: In a series circuit, the total voltage of the power supply is divided among the components. This can be useful when you want to ensure that each component receives a specific voltage.
3. Current consistency: The current remains the same throughout the series circuit, which can be beneficial when you need to ensure a consistent current flow through multiple components.
Disadvantages of Components Arranged in Series:
1. Reduced brightness or performance: As mentioned in the question, when light bulbs are connected in series, the increased resistance reduces the flow of current, resulting in dimmer bulbs or reduced performance in other electrical devices.
2. Single point of failure: If one component in a series circuit fails, it can disrupt the entire circuit and cause all components to stop functioning.
Advantages of Components Arranged in Parallel:
1. Brightness and performance: When components such as light bulbs are connected in parallel, each component receives the full voltage, resulting in brighter bulbs and better performance in other devices.
2. Redundancy: In a parallel circuit, if one component fails, the other components can continue to function independently. This provides redundancy and ensures that the failure of one component does not affect the others.
3. Increased current capacity: Parallel arrangement allows the circuit to handle higher currents, which can be useful in situations where high power or heavy loads are required.
Disadvantages of Components Arranged in Parallel:
1. Increased complexity: Parallel circuits require more wiring and connections, which can make the circuit more complex and harder to manage.
2. Higher cost: Parallel circuits may require more components and wiring, resulting in higher costs for materials and installation.
It's important to consider the specific requirements and constraints of the application when deciding whether to arrange components in series or parallel. Each configuration has its advantages and disadvantages, and the choice depends on factors such as desired current flow, voltage distribution, and reliability.I
What is evidence used by Galileo to disprove Aristotle and Ptolemy?
Answers
Galileo challenged the Aristotelian-Ptolemaic model, providing support for the heliocentric model and paving the way for a new understanding of the universe.
Galileo Galilei played a crucial role in challenging the prevailing geocentric model of the universe proposed by Aristotle and supported by Ptolemy. He provided several lines of evidence that effectively disproved their theories and supported the heliocentric model proposed by Nicolaus Copernicus. Some of the key evidence used by Galileo includes:
1. Observations through a telescope: Galileo was one of the first astronomers to use a telescope to observe the heavens. His telescopic observations revealed several important discoveries that contradicted the Aristotelian-Ptolemaic worldview. He observed the phases of Venus, which demonstrated that Venus orbits the Sun and not Earth. He also observed the four largest moons of Jupiter, now known as the Galilean moons, which provided evidence for celestial bodies orbiting a planet other than Earth.
2. Sunspots: Galileo's observations of sunspots provided evidence that the Sun is not a perfect celestial body, as suggested by Aristotle. Sunspots indicated that the Sun has imperfections and undergoes changes, challenging the notion of celestial perfection.
3. Mountains on the Moon: Galileo observed the rugged and uneven surface of the Moon, which contradicted Aristotle's belief in celestial spheres made of perfect, unchanging material. The presence of mountains on the Moon suggested that celestial bodies are subject to the same physical laws as Earth.
4. Phases of Venus: Galileo's observations of the phases of Venus provided direct evidence for the heliocentric model. As Venus orbits the Sun, it goes through phases similar to the Moon, ranging from crescent to full. This observation strongly supported the idea that Venus revolves around the Sun.
These lines of evidence presented by Galileo challenged the Aristotelian-Ptolemaic model, providing support for the heliocentric model and paving the way for a new understanding of the universe. His work marked a significant turning point in the history of science and laid the foundation for modern astronomy.
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a 150kg roller coaster SITTING ON THE TOP OF A 200M HILL HAS HOW MUCH POTETNTIAL ENERGY
Answers
Answer:
Epot = 294300 [J]
Explanation:
Potential energy is defined as the product of mass by height by gravitational acceleration. The height is measured with respect to the reference level. At this reference level the potential energy is equal to zero.
\(E_{pot}=m*g*h\\\)
where:
m = mass = 150 [kg]
g = gravity acceleration [m/s²]
h = elevation = 200 [m]
\(E_{pot}=150*9.81*200\\E_{pot}=294300 [J]\)
Spacecraft is traveling in inner planetary space at a constant velocity was it estimated distance traveled by the spacecraft in 9.50 seconds
Answers
The distance traveled by the Spacecraft is 2.3 x 10² m.
What is constant velocity?To have a constant velocity, the change in velocity or speed of the object must be zero.
Constant speed will elapse equal distance in an identical period of time as a result is an example of steady speed.
For a Spacecraft is traveling in inner planetary space at a constant velocity and a given time of motion, the distance traveled by the Spacecraft is calculated as follows;
Distance = speed x time
the speed is given as 24.21 m/s
the time of motion is given as 9.5 seconds
distance = 24.21 m/s x 9.5 s
distance = 2.3 x 10² m
Thus, the distance traveled by the Spacecraft is 2.3 x 10² m.
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The complete question is below;
Spacecraft is traveling in inner planetary space at a constant velocity of 24.1 m/s. What it estimated distance traveled by the spacecraft in 9.50 seconds?
Hint: Work the problem in metric units (m, m/s and m/s2) and then convert the initial speed from m/s to mph. Speeds that are greater than the critical speed you calculated are safe, because they cause the firework to safely explode higher than the critical height. We do NOT want the firework to explode too close to the ground!
Answers
The kinetic energy of the firework when it is launched is,
\(K=\frac{1}{2}mv^2\)At the minimum height the potential energy of the firework is,
\(U=\text{mgh}\)At the height the kinetic energy is converted into potential energy therefore, according to conservation of energy,
\(K=U\)Plug in the known values,
\(\begin{gathered} \frac{1}{2}mv^2=mgh \\ v^2=2gh \\ v=\sqrt[]{2gh} \end{gathered}\)Substituting values,
\(\begin{gathered} v=\sqrt[]{2(9.8m/s^2_{})(240\text{ m)}} \\ =(68.6\text{ m/s)}(\frac{2.24\text{ mph}}{1\text{ m/s}}) \\ \approx153.7\text{ mph} \end{gathered}\)Therefore, the launch speed of the firework is 153.7 mph.
As the launch speed is approximately equal to 160 mph therefore, the firework can be launched safely with speed 160 mph.
The diagram shows a proposed design for a ship that could be used for long-distance space travel. Explain why the ship must rotate so that passengers feel effects similar to gravity.
Answers
Answer:
I don't know this for sure, but I think its because they need to be able to sit in their seats without flying in the air.
Explanation:
Because of the centrifugal force he ship must rotate so that passengers feel effects similar to gravity.
What is Centrifugal force ?''Centrifugal force is force acting on a body performing circular motion, which is along radius of the circle and directed outwards from the center of circle". Since Centrifugal force acts at right angle to the tangential velocity of the body, there is no displacement in the direction of the force, hence no work done. It has newton(N) as Si unit.
centripetal force is given by,
F= mv²÷r
Where m is mass of the body v is velocity of the body r is radius of circle at which body is moving.
When space ship rotate to the certain angular velocity, centrifugal force will act on each object in the space ship. that force will force the object radially outwards as result all will stuck on the floor and all will experience the feel of gravity.
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Shannon and Chris push on blocks with identical force. SHannon's block is twice as massive as Chris'. After pushing for 5 seconds, who did more work?
Answers
Since Shannon and Chris push with identical force, the only difference between the two is the mass of the blocks.
The work done by Shannon is equal to the force she applied multiplied by the distance her block moved.
The work done by Chris is equal to the force he applied multiplied by the distance his block moved.
Since the force applied is the same, the only difference is the distance moved by each block.
Since Shannon's block is twice as massive as Chris', it will move half as far as Chris' block for the same amount of force applied.
Therefore, after pushing for 5 seconds, Chris did more work than Shannon.
If momentum is conserved, then why does a fired bullet travel so fast and far compared to the gun that fired it?
Answers
When you fire a bullet from the gun, the bullet travels in the forward direction with a very high velocity.
On the other hand, the gun also experiences a force that is in the backward direction.
This is known as "recoil".
Now the question may arise why the bullet travels so fast whereas the gun doesn't?
To understand this, recall that momentum is the product of mass and velocity.
\(p=m\cdot v\)The momentum of the gun must be equal to the momentum of the bullet.
The bullet has a smaller mass but greater velocity.
The gun has a greater mass but smaller velocity.
The end result is that the momentum of both gun and bullet is equal.
5. A rope exerts a constant horizontal force of 350 N to pull a 40-kg crate across the floor. The velocity of the crate is observed to increase from 1 m/s to 9 m/s in a time of 2 seconds under the influence of this force and the frictional force exerted by the floor on the crate.
a. What is the net force acting upon the crate?
b. What is the magnitude of the frictional force acting upon the crate?
Answers
The crate is being pulled by a total force of 160 N. the box is being subjected to a 350 N frictional force. The crate is being movement to a 96.99 N force of friction.
What pulls with a 250 N continuous horizontal force applied by a rope?A rope pulls a 60 kg 60 kg container across the floor with a constant force applied of 250 N. Under the impact of this coercion and the compressive stress the floor exerts on the crate, it is seen that the speed of the crate increases from 1 m/s to 3 m/s to 3 m/s in a period of 2 seconds.\($a = \frac{\Delta v}{\Delta t} =\frac{9}{ \text m/s - 1} \text m/s^2, \text s = 4, \text{and} \ \text m/s 2$\)
The following formula can be used to determine the net force on the crate:
\(\rm F_{net }= ma = (40kg)(4m/s) = 160 N\)
As a result, the crate is being pulled by a total force of 160 N.
What is the frictional force's magnitude?The degree of kinetic friction is inversely correlated with the level of normal force and the level of irregularity in between sliding surfaces. The magnitude of static friction is inversely related to the amount of normal force and the measure of roughness between of sliding surfaces.\((40 \text kg) = $N = mg 9.81 \text m/s^2= 392.4 \text N$\)
As the coefficient of friction factor between the crate and the floor is not provided, we are unable to directly calculate it. Yet, we are aware that the 350 N force exerted by the rope must be balanced by a force of friction that is both equal to and directed in the opposite direction. Hence, it is possible to compute the frictional force's magnitude as follows:
\(355 \text N, $F friction\)
As a result, the box is being subjected to a 350 N frictional force.
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An object experiences a constant change in velocity in free fall.
True False
Answers
A 60 kilogram person jumps off a platform, landing while moving at 2.0 meters per second. Determine the force exerted on the person's feet when he lands if he stops in 0.25 seconds.
Answers
Answer:
the anwser is 480 N for the answer hope this helped
The acceleration of the person of 60 kg jumping with a velocity of 2 m/s in 0.25 seconds is 8 m/s². Then the force exerted on the feet is 480 N.
What is force ?Force is an external agent acting on a body, to change its motion. Force is a vector quantity. Hence, it is characterized by a direction and magnitude. There are various kinds of forces such as gravitational force, magnetic force, frictional force etc.
According to Newton's second law of motion, force is the product of mass and acceleration of the body. The acceleration of a moving object is the rate of change in velocity.
given v = 2 m/s
time t = 0.25 s
then a = v/t = 2/0.25 = 8 m/s²
then, force F = m a
F = 60 kg × 8 m/s² = 480 N.
Therefore, the force exerted on his feet is 480 N.
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A uniform electric field is directed upward and has a magnitude of 24 N/C. A charge of -6 C is placed in this
field.
The direction of the force on the charge placed in the electric field is upward.
True or False
Answers
The statement" The direction of the force on the charge placed in the electric field is upward" is false because the direction of the force on a negative charge (-6 C) placed in an upward-directed uniform electric field of magnitude 24 N/C would be downward.
The direction of the force on a charged particle placed in an electric field is determined by the charge of the particle and the direction of the electric field. In this case, a charge of -6 C is placed in an electric field directed upward with a magnitude of 24 N/C.
The force on a charged particle in an electric field can be calculated using the formula:
F = q * E
Where F is the force, q is the charge of the particle, and E is the electric field.
Since the charge q in this case is negative (-6 C) and the electric field E is directed upward, we can substitute the values into the formula:
F = (-6 C) * (24 N/C)
F = -144 N
The negative sign in the force value indicates that the force is in the opposite direction to the electric field. Therefore, the force on the charge placed in the electric field is downward, not upward.
The force on a negative charge is always opposite to the direction of the electric field. This is because negative charges experience an attractive force towards positive charges, and electric fields are directed from positive charges to negative charges.
Therefore, the statement "The direction of the force on the charge placed in the electric field is upward." is false.
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A woman of mass 55 kg stands on the rim of a frictionless merry-go-round of radius 2.0m and rotational inertia 1250 kg-m2 that is not moving. She throws a rock of mass 350g horizontally in a direction that is tangent to the outer edge of the merry-go-round. The speed of the rock, relative to the ground, is 2.0m/s. Afterward, what are (a) the angular speed of the merry-go-round and (b) the linear speed of the woman
Answers
Answer:
a) \(\omega=9.10*10^{-4}rad/sec\)
b) \(V=1.8217*10^{-3}\)
Explanation:
From the question we are told that:
Mass of woman \(M_w=55kg\)
Radius of merry go round \(r=2.0m\)
Rotational inertia \(i= 1250 kg-m2\)
Mass of rock \(M_r=350g \approx 0.350kg\)
Speed of rock \(V_r=2.0m/s\)
Tangent angle to the outer edge \(\theta=1\)
a)
Generally the equation for conservation of momentum is mathematically given by
\(M_r(ucos\theta)r=(I+M_wr^2)\omega\)
\(0.350(2.0cos1)(2.0)=(1250+(55)(2.0)^2)\omega\)
\(1.3998=1470\omega\\\omega=\frac{1.339}{1470}\)
\(\omega=9.10*10^{-4}rad/sec\)
b)
Generally the equation for linear speed V is mathematically given by
\(V=r\omega\\V=2.0*9.10*10^{-4}\)
\(V=1.8217*10^{-3}\)
Which branch of science studies how sound waves move through the air?
A. Life science
B. Physical science
C. Space science
D. Earth science
Answers
Answer:
B is the correct answer
Explanation:
just bc I said so:)
Type the correct answer in the box. Spell all words correctly.
Mention the term
refers to having a generalized (and biased) belief about a particular group of people.
Answers
In social psychology, a stereotype is a generalized belief about a particular category of people.
What is stereotype ?A stereotype can be described as the accepted, condensed, and essentialist opinion with regards to certain population.
I should be nted hat his can be related to gender identity, race as well as ethnicity, country, however there are other things that an be used frequently used to stereotype groups. Stereotypes are pervasively present in both the larger social structure and culture.
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A 306-kg car moving at 16.5 m/s hits from behind a 810-kg car moving at 13.2 m/s in the same direction. If the new speed of the heavier car is 17.5 m/s, what is the velocity of the lighter car after the collision, assuming that any unbalanced forces on the system are negligibly small?
Answers
Answer:
v₂f = 5.1 m/s
Explanation:
Assuming no external forces acting during the collision, total momentum must be conserved.⇒ p₀ = pfThe initial momentum p₀, can be written as follows:\(p_{o} = m_{1} *v_{1o} + m_{2} *v_{2o} (1)\)
where m₁ = 306 kg, m₂ = 810 kg, v₁₀ = 16.5 m/s, v₂₀ = 13.2 m/s
The final momentum, pf, can be written as follows:\(p_{f} = m_{1} *v_{1f} + m_{2} *v_{2f} (2)\)
where v₂f = 17.5 m/s
Since p₀ = pf, which means that (1) is equal to (2),Replacing by the givens, and rearranging, we can solve for the only unknown that still remains, v₁f, as follows:\(v_{1f} = v_{1o} +\frac{m_{2} }{m_{1}} * (v_{2o} - v_{2f} ) \\= 16.5 m/s + \frac{810}{306} * (13.2 m/s - 17.5 m/s) \\= 16.5 m/s + \frac{810}{306} * (-4.3 m/s) \\= 16.5 m/s -11.4 m/s = 5.1 m/s\)
The velocity of the lighter car after the collision is 5.1 m/s.Your friend writes you a postcard describing a bird she saw while on vacation.
You start creating a picture in your mind of what the bird looks like. What
active reading strategy are you using?
A. Monitoring and applying fix-up strategies
B. Using visual cues and text features
C. Making mental images
D. Summarizing
Answers
Answer:
it should be C.
Explanation:
Visualizing refers to the ability to create mental pictures in our mind based on the text we read or words we hear. When we visualize, we are tapping into our prior knowledge, making connections, gathering information and paying attention to detail. It is one of many skills that make reading comprehension possible.
A train is happily moving at a speed of 30mi/hr when the engine gives out all for sudden. If it
takes 20 minutes for the train to come to rest, what is the average acceleration? (Give your answer
in m/s².)
Answers
Answer:
-0.011176 m/s²
Explanation:
You want the acceleration in m/s² of a train that comes to rest from 30 mi/h after 20 minutes.
AccelerationThe acceleration is the change in velocity divided by the change in time.
\(-\dfrac{\dfrac{30\text{ mi}}{\text{h}}}{20\text{ min}}=\dfrac{30\text{ mi}}{20\text{ h$\cdot$min}}\times\dfrac{1609.344\text{ m}}{1\text{ mi}}\times\dfrac{1\text{ h}}{60\text{ min}}\times\left(\dfrac{1\text{ min}}{60\text{ s}}\right)^2\\\\=-\dfrac{30\cdot1609.344\text{ m}}{20\cdot60^3\text{ s}^2}=\boxed{-0.011176\text{ m/s}^2}\)
A car with a momentum (impulse) of 20,000 kg m/s collides with a wall and comes to a rest in 0.1 seconds. How much
force is absorbed by the car (and the driver)?
Answers
Answer:
» Force is 200,000 Newtons
Explanation:
\({ \tt{force = \frac{impulse}{time} }} \\ \\ { \tt{force = \frac{20000}{0.1} }} \\ \\ { \tt{force = 200000 \: newtons}}\)
A 12 N net force is applied to an object as it moves a distance of 3.0 m: Use the
Work-Kinetic Energy Theorem to determine the object's change in kinetic energy.
Enter your answer in Joules.
Answers
Answer:
4 joules
Explanation:
Consider a vacuum-filled parallel plate capacitor (no dielectric material between the plates). What is the ratio of conduction current Jc to displacement current Jd at 10 MHz
Answers
Answer: 1798
Explanation:
Given that there is no dielectric material between the plates,
the permittivity of free space = 9 × 10^-12 f/m
The frequency F = 10 MHz
The ratio of conduction current JC to the displacement current Jd is also known as loss tangent.
Please find the attached file for the solution
The figure above represents two charged, concentric conducting shells with radii R_1 and R_2. The space between the shells is filled with air. The dashed lines represent equipotentials. The electric field just outside the inner shell has magnitude E_1, and the electric field just inside the outer shell has magnitude E_2. Which of the following statements is true of the magnitude E of the electric field at point P? (a) E = 0 (b) E_1 > E > E_2 (c) E = E_1
Answers
The electric field just outside the inner shell has magnitude E1, and the electric field just inside the outer shell has magnitude E2, True for the magnitude E of the electric field at point P is The correct answer is (b) i.e. E1 > E > E2
Since the shells are conducting and the space between them is filled with air, the electric field must be perpendicular to the surface of the shells at all points. This means that the equipotential lines as assumed must be perpendicular to the shells as well. At point P, the equipotential lines are closer together than they are at the outer shell, but farther apart than they are at the inner shell. This means that the electric field at point P must have a magnitude that is between E1 and E2, but closer to E1 than to E2. Therefore, the correct answer is (b) E1 > E > E2. The term "electric field" refers to the physical field that surrounds electrically charged particles and acts to either attract or repel all other charged particles in the field (also known as an E-field). It can also refer to the physical field surrounding a system of charged particles. Electric fields are composed of electric charges and time-varying electric currents. Both electric and magnetic fields are manifestations of the electromagnetic field, one of the four fundamental interactions of nature.
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2.
A rock, mass 4 kg, and a 1 kg stone fall freely from rest from a height of
100 m. After they fall for 2 seconds, the ratio of the rock's speed to the
stone's speed is
Answers
Answer:
44.72m/s
Explanation:
use th formula:vf²=vi²at
and then substitute the values
remember the units
If there is no air resistance, the speed of the free falling object from the same height will be the same. Therefore, the ratio of speed of the stone to that of rock for 2 seconds falling will be 1 : 1.
What is free falling ?An object freely falling under the force of gravitation is called the free falling body. Here, the acceleration of the object is the acceleration due to gravity.
For a freely falling body, the velocity v = g t
where g is the acceleration due to gravity and for earth g is 9.8 m/s².
Everybody falls with the same rate freely under the acceleration due to gravity if there is no air resistance at all.
Here, the time t = 2 s
then v = 9.8 m/s² × 2 s = 19.6 m/s.
the speed of both the rock and stone will be 19.6 m/s in the absence of air resistance. Hence, the ratio of their speed is 1 : 1.
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