Steam, initially at 700 lbf/in.2, 550°f undergoes a polytropic process in a piston-cylinder assembly to a final pressure of 3600 lbf/in. kinetic and potential energy effects are negligible. determine the heat transfer, in btu per lb of steam, for a polytropic exponent of 1.3, (a) using data from the steam tables. (b) assuming ideal gas behavior.

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

How would a small bar magnet be oriented when placed at position x?

How does a circuit breaker protect a refrigerator? a. when the current is too high, a metal strip in the fuse melts and opens the circuit. b. when the resistance is too high , a re-settable which opens a circuit c. when the current is too high , a re-settable switch opens the circuit d. when the resistance is too high a metal strip in the fuse melts and opens the circuit