Long answer question: (any three 1) A bus starts to move from rest and gains a velocity of 30 m/s in
10 second. Calculate its acceleration​

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.