Astudent takes the elevator up to the fourth floor to see her favorite physics instructor. she stands on the floor of the elevator, which is horizontal. both the student and the elevator are solid objects, and they both accelerate upward at 5.10 m/s2. this acceleration only occurs briefly at the beginning of the ride up. her mass is 81.5 kg. what is the normal force exerted by the floor of the elevator on the student during her brief acceleration? (assume the j direction is upward.)

Anne applies a force on a toy car and makes it move forward. what can be said about the forces acting on the toy car at the moment anne applies the force?

Abird sitting high in a tree is an example of what type of wnergy

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