If m represents mass in kg, v represents speed in m/s, and r represents radius in m, show that the force f in the equation f=mv^2 /r can be expressed in the unit kg×m/s^2

How much work is done lifting a 9.10 kg box straight up onto a shelf that is 1.80 m high?

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.

When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.