100.0 J of work accelerates a 0.500 kg hockey puck across an ice rink (a frictionless environment). The total kinetic energy gained by the puck is?
a. 0.500 J b. 20.0 J c. 50.0 J d. 100.0 J

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot

Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers total displacement?

Refrigerant-134a flows through a carnot heat pump cycle at 0.5 kg/s. it is known that the maximum absolute temperature in the cycle is 1.1 times the minimum absolute temperature, and the net power input to the cycle is 2.5 kw. if the refrigerant changes from a saturated vapor to a saturated liquid during the heat rejection process, determine the maximum magnitude of the enthalpy of vaporization for this process in kj/kg (with 3 significant figures).