What is the kinetic energy of an 80 kg football player running at 8 m/s?

The sun generates both mechanical and electromagnetic waves. which statement about those wave is true?

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.

Select the correct answer. what does the process of natural selection involve?