Motion of a light source, like stars in distant galaxies, causes the spectral lines to shift positions as well. an object's motion causes a wavelength shift δλ = λnew - λres. the amount of shift in the spectral lines can tell astronomers how galaxies are moving relative to our position on earth. the wavelength shift depends on

What are the factors that affect the resistance of a wire?

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.

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?