Arock has a mass of 340.6 kg and a volume of 214 cm^3. calculate the density by density = mass/volume
will report if wrong

Avoltaic cell converts chemical energy to

Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.

Does current flow through or across a resistor?