Which of the following statements most accurately differentiates potential and kinetic (a)kinetic energy is a form of mechanic energy, while gravitational potential is not.(b.)any object that has motion has kinetic energy, while any object not in motion but with the potential to do work has potential energy.(c)gravitational potential energy is a form of mechanical energy, while kinetic energy is not.(d)any object that has motion has potential energy, while any object not in motion but with the potential to do work has kinetic energy

Electroplating is a way to coat a complex metal object with a very thin (and hence inexpensive) layer of a precious metal, such as silver or gold. in essence the metal object is made the cathode of an electrolytic cell in which the precious metal cations are dissolved in aqueous solution. suppose a current of 480.ma is passed through an electroplating cell with an aqueous solution of agno3 in the cathode compartment for 46.0 seconds. calculate the mass of pure silver deposited on a metal object made into the cathode of the cell. round your answer to 3 significant digits. also, be sure your answer contains a unit symbol. ×10μ

Place me with this question is my last question

On mars a rock falls an unknown vertical distance from a resting position and lands in a crater. if it takes the rock 2.5 seconds to fall, how high is the cliff the rock fell from? mars' surface gravity is 3.8 m/s2.