HELP PLEASE A 51.7 kg hiker that ascends a 43.2 m hill at a constant speed of 1.20 m/s. It takes the hiker 384 seconds to reach the top. On the journey the hikers potential energy is___
The total change in gravitational potential energy for the hiker is The amour if work done by the hiker to reach the top of the hill is___
The hiker requires watts of power to get to the top of the hill in 384 seconds

Ten students stand in a circle and are told to make a transverse wave. what best describes the motion of the students? each student bumps the shoulder of his or her neighbor. at the exact time, all students take a step to the right. the students skip clockwise, going in a circular motion. one at a time, each student lifts his or her hands up and then down.

Is it possible to use the energy from two atoms colliding to create a clean burning lasting fuel source with a large amount of force? is it also possible to harness that energy from the two atoms colliding to create a clean energy source that will last for years from just two atoms colliding. is there a possibility to control and store that energy for years but slowly let the energy out enough to power cities cheaper and faster.

A150 w lamp emits light of wavelength 590 nm uniformly in all directions. what is the photon flux (photons per unit area per unit time) on a small screen at a distance 2.3 m from the lamp? assume the photons are uniformly distributed over the surface of a sphere of radius 2.3 m.