You are pushing a book across a desk with a constant velocity. What are the forces acting on the book and in what direction?

Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.

The necleus of an atom is made up of what subatomic particles?

Select all the correct answers. which three statements about electromagnetic radiation are true?