The UV light responsible for sun tanning falls in the 320nm to 400nm range. Calculate the total energy in J absorbed by a person exposed for 2 hours given that theyre 2.00 *10^16 photons hitting the Earths surface per cm^2 per second over the 320 nm - 400 nm range and the exposed body area is 0.450m^2. Assuming that only one half of the radiation is absorbed and the other half is reflected by the body. Use the average wavelength of 360nm for the calculation.