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cupoosta [38]
4 years ago
15

fastest humans can reach speeds of about 11 m/s. part a in order to increase his gravitational potential energy by an amount equ

al to his kinetic energy at full speed, how high would such a sprinter need to climb? express your answer to two significant figures and include the appropriate units.
Physics
1 answer:
luda_lava [24]4 years ago
6 0

Answer:

6.17 m

Explanation:

speed, v = 11 m/s

Let the mas is m.

As according to the question

Potential energy = kinetic energy

m x g x h = 0.5 m v²

where, h is the height raised.

9.8 x h = 0.5 x 11 x 11

h = 6.17 m

Thus, the height raised is 6.17 m .

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Which process is represented by the PV diagram?
Reika [66]

Hi!


The answer would be A. Isobaric Process


<h3>Explanation:</h3>

Isobaric process is a process where the pressure inside a system remains unchanged. In the Pressure Volume graph given, you can see that the pressure (y axis) remains constant with an increasing volume ( x axis). An example of this would be heating a container with a movable piston. Now, the degree of pressure is dependent on the frequency of collisions of particles inside a system on the walls. If this frequency changes, the pressure changes (proportionally). In our example, heating a container with a movable piston results in the particles inside the container to gain kinetic energy and move faster, meaning an increased frequency of collisions (higher pressure), but at the system time the increase in pressure results in the piston being pushed outwards, causing the volume of the container to increase. This results in decreased frequency of collision of the particles with the walls of the container (lesser pressure). This results in the a zero net effect on the pressure.


Hope this helps!

3 0
4 years ago
Please answer question B.
Flura [38]

Answer: 3.92

Explanation:

7 0
3 years ago
A 20 kg cart moving at 4 m/s has how much momentum?
masha68 [24]

Answer:

We conclude that the required momentum is 80 kgm/s.

Explanation:

Given

  • Mass m = 20 kg
  • Velocity v = 4 m/s

To determine

The momentum p = ?

Important Tip:

  • The momentum of an object is the product of mass and velocity.

We can determine the momentum using the formula

p = mv

where

  • p is the momentum
  • m is the mass
  • v is the velocity

now substituting m = 20 and v = 4 using the equation

p = mv

p = (20) (4)

p = 80 kg m/s

Therefore, we conclude that the required momentum is 80 kgm/s.

6 0
3 years ago
565900 seconds into day
olasank [31]
The answer is 6 and a half days
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4 years ago
What is the relation between height and energy?
Evgesh-ka [11]
Since the gravitational potential energy of an object is directly proportional to its height above the zero position, a doubling of the height will result in a doubling of the gravitational potential energy. A tripling of the height will result in a tripling of the gravitational potential energy.
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3 years ago
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