The tank has two inlets and one outlet valves. The inlet valves have flow rates of 250 gal/min and 100 gal/min. If the level of the fluid in the tank remain constant, calculate the average velocity leaving the tank.

Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

What is creep? what is stress relaxation?