Why did isaac newton come up with the three laws of motion

What is the difference between electrically neutral objects and electrically charged objects

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

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.