Answer:
Explanation:
Given
mass of box is m
speed of box is v
coefficient of friction 
Box is moving at a constant speed i.e. Net Force on box is zero
i.e. Frictional Force and Force Applied are Equal

The Rate at which power is generated is



Explanation:
neglecting air resistance both will land at the same moment.
both have therefore the same acceleration.
Answer:
hope
that helps
Explanation:
D. The sleeper's heart rate, blood pressure, and breathing rate drop to their lowest levels.
Answer:
hydrometer
Explanation:
A hydrometer is an instrument used to determine specific gravity. It operates based on the Archimedes principle that a solid body displaces its own weight within a liquid in which it floats. Hydrometers can be divided into two general classes: liquids heavier than water and liquids lighter than water.