Arigid, insulated tank that is initially evacuated is connected through a valve to a supply line that carries helium at 200 kpa and 120°c. now the valve is opened, and helium is allowed to flow into the tank until the pressure reaches 200 kpa, at which point the valve is closed. determine the flow work of the helium in the supply line and the final temperature of the helium in the tank.

Fluids at rest possess no flow energy. a)- true b)- false

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

A)-in the process of engineering design, explain the contribution of material selection. b)- explain the procedure of synthesis as is employed in engineering design. c)- is there any relationship between ergonomics and engineering design? explain. d)- safety consideration in engineering design includes human, product and the enviroment . explain how safety will be incorporated into the design?