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juin [17]
4 years ago
14

Suppose a ball is dropped from shoulder height, falls, makes a perfectly elastic collision with the floor, and rebounds to shoul

der height. Compare the magnitudes of the impulses delivered to the ball by gravity and by the floor during this entire motion.
Physics
1 answer:
Bezzdna [24]4 years ago
7 0

Answer:Same magnitude

Explanation:

When ball is dropped from shoulder height h then velocity at the bottom is given by

v_1=\sqrt{2gh}

if it makes elastic collision then it will acquire the same velocity and riser up to the same height

If m is the mass of ball then impulse imparted is given by

J=m(v_2-v_1)

J=2m\sqrt{2gh}

Thus impulse imparted by gravity and Floor will have same magnitude of impulse but direction will be opposite to each other.

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ryzh [129]

Answer:

c. turn downward

Explanation:

From the information given:

To find the tendency of the sander;

We need to apply the right-hand rule torque; whereby we consider the direction of the flywheel, the direction at which the torque is acting, and the movement of the sander toward the right.

Since the flywheel of the sander is in counterclockwise movement, hence the torque direction will be outward placing on the wall. However, provided that the movement of the sander is toward the right, then there exists an opposite force that turns downward which showcases the tendency in the sander is downward.

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3 years ago
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IrinaVladis [17]

Answer : The best pressure is 110 GPa of the lower mantle.

Explanation : We know that the pressure in the lower mantle starts at 24 GPa and reach a 136 GPa at the boundary.

So, the best pressure is 110 GPa because 220 GPa, a 305 GPa and 360 GPa are the higher value of  the maximum value 136 GPa of the lower mantle.

4 0
4 years ago
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If you have 4 kg of a sample with density of 1 897 g/ml what is the volume
Kaylis [27]
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Here, mass = 4 Kg = 4000 g
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Hope this helps!
3 0
3 years ago
What is the potential energy possessed by a rock of mass 4kg projected to a height of 2m (g=10m/s2)
Mumz [18]

Potential Energy = Mass * Gravitational Constant * Height

What We Don't Know: Potential Energy

What We Know:

Mass

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Ep = 4 * 9.8 * 2

Ep = 78.4 Joules

The Potential Energy of the Rock is 78.4 Joules, based on the given information! Hope this helps you!

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The answer is A) Shiny

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