To change a tire, you need to use a jack to raise one corner of your car. while doing so, you happen to notice that pushing the jack handle down 20 cm raises the car only 0.2 cm. use energy concepts to explain why the handle must be moved so far to raise the car by such a small amount.

(detailed explanation)

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?