The maximum pressure variations the human ear can withstand above and below atmospheric pressure is around 30 pa. the normal atmospheric pressure is around 101325 pa. hence the variation in the maximum pressure for human ear is very small as compared to the atmospheric pressure. if the ear is exposed to a pressure greater than this , it can cause permanent damage to the ear.
Answer:
Approximately .
Assumption: air resistance is negligible.
Explanation:
Make sure all the values are in standard units.
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The bounce here is an inelastic collision between the ball and the surface. Some of the kinetic energy (KE) was lost. The exact value of energy loss would be equal to .
Before the bounce, all the kinetic energy of the ball would come from the drop from . That is:
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After the bounce, the ball travels to a height of . All the potential energy gained in that process should come from the kinetic energy when the ball bounces back from the ground.
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Hence, the size of energy loss due to the bounce would be equal to
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