A beam of 4.5-MeV neutrons is directed at a 0.030-kg tissue sample. Each second, 1.5 × 10^{6} neutrons strike the sample. If the relative biological effectiveness of these neutrons is 7.0, what biologically equivalent dose (in rem) is received by the sample in 65 seconds?

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A beam of 4.5-MeV neutrons is directed at a 0.030-kg tissue sample. Each second, 1.5 × 106 neutrons strike the sample. If the relative biological effectiveness of these neutrons is 7.0, what biologically equivalent dose (in rem) is received by the sample in 65 seconds?

ANSWER: 1.6rem

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