6) A force Fis exerted on a 5 kg block to move it across a rough surface, as 1 point
shown. The magnitude of the force is initially 5 N, and the block moves at a
constant velocity. While the block is moving the force is instantaneously
increased to 12 N. How much kinetic energy does the block now gain as it
moves a distance of 2 m?*

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).