Two vectors with lengths 1.00 m and 2.00 m have an angle, theta=30.00 degrees, between them. what is the square length of the resultant vector

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.