The US currency bill is exactly 6.14 in. long. Your friend teases you and holds a $100 bill vertically, just above your fingers, and says you can keep it, if you can catch the bill when dropped. What is the speed (in m/s) of the dropped $100 bill, after it has fallen its length?

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).