Author Question: A 70-kg laboratory technician absorbs 2.9 mJ of 0.50-MeV gamma rays in a workday. How many gamma-ray ... (Read 328 times)

P68T · **on:** Jul 29, 2018

A 70-kg laboratory technician absorbs 2.9 mJ of 0.50-MeV gamma rays in a workday. How many gamma-ray photons does the technician absorb in a workday?

A) 3.6 1010
B) 3.6 109
C) 3.6 108
D) 1.0 109
E) 1.0 108

Question 2

A 57-kg researcher absorbs 6.3 108 neutrons in a workday. The energy of the neutrons is 2.6 MeV. The relative biological efficiency (RBE) for fast neutrons is 10. What is the equivalent dosage of the radiation exposure, in mrem, of this worker?

A) 4.6 mrem
B) 1.4 mrem
C) 2.9 mrem
D) 14 mrem
E) 46 mrem