Aluminum, copper, gold, and nichrome wires of equal lengths of 1.0 x 10-1 meter and equal cross-sectional areas of 2.5 x 10-6 meter? are at 20.C. Which wire has the greatest electrical resistance?

In a load, the load is paralel to the shaft. n a. angular n b. thrust n c radial n d. none of the above

2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?