What do most composites and plastics have in common? a)they are electrically non-conductive. b)they are crystalline. c)they are based on a carbon molecular structure. d)they are malleable.

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.

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?

Which of the following is not a means to accelerating? question 4 options: a)increase speed b)remain still c)decrease speed d)change direction