1. (25 points - no need for homework format) (i). If we consider a subcooled liquid as incompressible, what approximation we can make aboutits mass-specific volume v, mass-specific internal energy

u, and mass-specific enthalpy h? (ii). In nozzles or diffusers, if fluids at the inlet and outlet are at the same temperature, if we treat the fluid as incompressible, show the energy conservation equation after applying conventional assumptions for nozzles or diffusers.