What pressure must be applied to a sample of Freon gas having a volume of 325 L to permit the expansion of the gas to a volume of 975 L?

An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.

Most of the volume of an atom is occupied by the

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.