To what temperature must 1m^3 of air at 27 C be heated, at constant pressure, in order to increase its volume to 3m^3?

If the new moon happens on january 15th, what shape will it be on february 6th?

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.

How does changing the frequency affect the energy of the wave?