What can occur when a wave passes from one medium into another?

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.

You can melt ice by applying pressure because the solid/liquid line has a slope.

Which of the following is not an appropriate unit for acceleration? (kg/12 mihr? m/min/sec cm/30c?