A diver descends into the sea to a depth of 38 m. Calculate the value of the pressure to which it is subjected knowing that the density of the ac-qua of
sea is worth 1026 kg/m3

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?