Answer: box one is chemical energy and box 2 is absorbed energy
Explanation:
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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.
The correct answer to the question is D).3600 N.
CALCULATION:
As per the question, the mechanical advantage of the machine MA = 4.5.
The force applied to the machine .
We are asked to calculate the output force of the machine .
Let the output force is denoted as .
The mechanical advantage of a machine is defined as the force amplification of a machine by using certain mechanical devices.
Mathematically it is defined as the ratio of output force to the applied or input force.
Hence, mechanical advantage MA =
Hence, the output force is calculated as -
[ANS]
Hence, the output force is 3600 N.
The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them. This means that the force of gravity increases with mass, but decreases with increasing distance between objects.