Jenny's model train is set up on a circular track. there are six telephone poles evenly spaced around the track. it takes the engine of her train 10 seconds to go from the first pole to the third pole. how long would it take for the engine to go the entire distance around the track?

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.