If you cut a piece of gold you have two pieces of gold. If you continue this process, at some point your sample will be so small that you will no longer have gold. What is the smallest particle that is still gold? Question 1 options: A Crystal of gold A gold atom Protons from gold atoms Tau neutrinos

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).