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Determine the HVL of photons in air, water, muscle, bone, and Pb for energies of 5 keV, 100 keV, 1 Mev and 100 MeV and then fill in the table below. Note that you must find the HVL in units of cm and in units of g/cm2. Express your answers with 3 significant figures. Only show one sample calculation.
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