If a substance besides water is changed from a gas to a liquid and then to a solid, what happens to the particles?

they get closer together
they get farther apart
they get closer together, then farther apart
they get farther apart, then closer together

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

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.

Ahorizontal force of 400.0 n is required to pull a 1760 n truck across the floor at a constant speed. find the coefficient of sliding friction.