Jorge inflates a beach ball to a volume of 4L in his air-conditioned house where the temperature is 18oC. That afternoon he takes the beach ball to the beach with some friends. The temperature at the beach is 32oC, and the air pressure at the beach is the same as it was at Jorge’s house. What will happen to Jorge’s beach ball when he is at the beach.

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

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.