While on Europa, you decide to test the depth of an ice cliff by dropping a rock and listening for when it hits the ground. If the gravitational acceleration on Europa is 1.315 m/s2, and it takes 15 s to hit the floor, how deep was the cliff? (Displacement should be negative)

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

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

The slope of a velocity time graph over any interval of time gives the during that interval