In general, the string or air column of a musical instrument is, the more harmonics are generated. shorter or longer

In order for the bug to fly through the air a force has to push the bug forward. identify this force. how does the bug produce

Anybody wanna ? (picture included? )

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.