Ce and other 4 A ball has a mass of 0.5 kg. Dropped from a cliff top.
the ball hits the sea below at a speed of 10 m/s
a What is the kinetic energy of the ball as it is about to
b What was the ball's gravitational potential energy
hit the sea?
avitational
ground?
before it was dropped?
c From what height was the ball dropped?
d A stone of mass 1 kg also hits the sea at 10 m/s.
Repeat stages a, b, and c above to find the height from
which the stone was dropped.
publed?
ergy. What

If you touch a hot light bulb and get burned, that is an example of a. radiation b. convection c. conduction

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

Describe uniform velocity and variable velocity in short