A crate falling from a plane is part of a closed system that has 24,450 J of mechanical energy. If the kinetic energy of the crate increases from 10,000 J
to 15,000 J, what happens to the gravitational potential energy of the system?

A. It decreases from 15,000 J to
10,000 J.

B. It decreases from 14,450 J to
9,450 J.

C. It increases from 10,000 J to
75,000 J.

D. It increases from 9,450 J to
14,450 J.

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.

Acar of mass 800kg is moving at a speed of 2.2m/s.

Five structural isomers have the formula c6h14. where needed, draw the structure and give the iupac name of all five isomers.