PLS HELP Determine the quantity of work done when a crane lifts a 200-N block from 2 m above the ground to 6 m above the ground.

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?

What is a subatomic particle with a negative charge and very little mass?

Which word expression describes how much to calculate pressure