Why does an astronaut weigh less on the moon than on earth?
a. the astronaut has less mass on the moon.
b. the astronaut is farther from earthâs center when he or she is on the moon.
c. the gravitational field strength is less on the moonâs surface than on earthâs surface.
d. the astronaut is continually in free fall because the moon orbits earth?

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

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

Oxygen and hydrogen gas are at the same temperature t.what is the ratio of kinetic energies of oxygen molecule and hydrogen molecule if oxygen is 16 times heavier than hydrogen.