A television converts 100J of electrical energy into 25J of light and 10J of sound energy. What percentage of the energy supplied to the television is lost as heat

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).

What ia the energy of an object because of its potential and kinetic energies

What are known as the properties of substances that describe a substance et does not change that substances?