The weight of a piston of area A creates a force F on a large tank of water of the same area A. A small diameter tube protrudes from the side of the tank and bends upwards, discharging a jet at a speed Vfrom a nozzle located at height H relative to the piston-water interface.

Copper has free electrons per cubic meter. a 71.0-cm length of 12-gauge copper wire that is 2.05 mm in diameter carries 4.85 a of current. (a) how much time does it take for an electron to travel the length of the wire? (b) repeat part (a) for 6-gauge copper wire (diameter 4.12 mm) of the same length that carries the same current. (c) generally speaking, how does changing the diameter of a wire that carries a given amount of current affect the drift velocity of the electrons in the wire?

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

Suppose while hauling rocks, you accidentally drop one. it breaks apart in flat, planar sections. what type of rock did you just drop? 20 points