A light ray travels from air into a liquid. The ray is incident to the liquid at 40° and the angle of refraction is 33°. What is the index of refraction of the liquid?

What is the internal energy of 4.00 mol of diatomic nitrogen gas n2 at 455k

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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.