What type of waves can travel through a medium

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?

Afisherman notices that his boat is moving up and down periodically, owing to waves on the surface of the water. it takes a time of 2.70 s for the boat to travel from its highest point to its lowest, a total distance of 0.700 m. the fisherman sees that the wave crests are spaced a horizontal distance of 6.50 m apart. a. how fast are the waves traveling? b. what is the amplitude a of each wave?