Carbon dioxide (assume ideal gas) is compressed in a compressor from 120 kPa and 227°C to 700 kPa and 427°C at a mass flow rate of 5 kg s-1. 100 kW is lost to the environment in the process. Determine the work required.

Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.

The temperature of air decreases as it is compressed by an adiabatic compressor. 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