A 30.0-kg child receives 2.65 × 107 β particles, each with an energy of 4.60 × 10-13 J. If the RBE = 0.78, how many millirem did the child receive?
A) 3.2 × 10-7
B) 5.2 × 10-7
C) 5.2 × 10-4
D) 3.2 × 10-2
E) None of these choices are correct.
Correct Answer:
Verified
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