On a cloudless day, the sunlight that reaches the surface of the earth has an intensity of about W/m². What is the electromagnetic energy contained in 5.20 m³ of space just above the earth's surface?

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.

What is the angular momentum of the bar about the axle?

Why do astronauts in the space shuttle weigh less?