6. What are the methods to control noise pollution?

Convection occurs when thermal energy is transferred by the movement of

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).

The three classes of rocks are sedimentary, metamorphic, and igneous. how are rocks classified into one of these three groups?