What term refers to the gases that are produced by combustion in a rocket engine and leave the rocket engine through a nozzle? A. surplus gases
B. ignition gases
C. exhaust gases
D. waste gases

Ultraviolet radiation is dangerous because it has a high enough energy to damage skin cells. what is the best explanation of the relationship between wavelength and wave energy? a) wave energy is related only to frequency, not wavelength. b) longer wavelengths have lower frequencies but higher energy. c) the shorter the wavelength, the lower the frequency and the higher the energy. d) the shorter the wavelength, the higher the frequency and the higher the energy.