Exposure to a sufficient quantity of ultraviolet will redden the skin, producing erythema - a sunburn. The amount of exposure necessary to produce this reddening depends on the wavelength. For a 1.0cm^2 patch of skin, 3.7 mJ of ultraviolet light at a wavelength of 254nm will produce reddening; at 300nm wavelength, 13mJ are required. Part A What is the photon energy corresponding to each of these wavelengths? E_254, E_300 = ?J