Which hypothesis best explains the shape of our solar system and the motions within it? a. solar b. nebular c. planetary d. random capture

An object has a weight of 500 on earth what is the mass of this object

Which notation is used to represent an alpha particle? a. b. c. d.

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).