An object is moving across a surface, but it does not gain or lose speed. Which best describes the object’s force? The net force is positive.
The net force is zero.
The positive force is greater than the negative force.
The negative force is greater than the positive force.

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.

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

Which subatomic particle has a negative charge