Air is heated from 50 f to 200 f in a rigid container with a heat transfer of 500 btu. assume that the air behaves as an ideal gas. determine the volume of air [ft3] if the initial pressure is 2 atm. also show the process on a p-v state diagram. use the following temperature conversion: t[r] = t[f] + 460.

Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

The filament of an incandescent lamp has a temperature of 2000k. calculate the fraction of radiation emitted in the visible light band if the filament is approximated as blackbody