Which best describes a material with a low index of refraction (near 1)?
a. it causes light to refract significantly.
b. the speed of light stays constant.
c. is causes light to slow and refract very little.
d. light is mostly reflected at a value near 1.

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.

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

Convection occurs when thermal energy is transferred by the movement of