Answer
See explanation.
Work Step by Step
a.
$175krad\frac{0.010Gy}{rad}=1.75kGy$.
For x rays, RBE = 1.00. The equivalent dose equals the absorbed dose.
175 krad=175krem.
The RBE for x-rays is 1.0, so by equation 43.20, the equivalent dose in sieverts is $RBE \times 1.75kGy=1.75kSv$.
Calculate the absorbed energy.
$\frac{1.75\times10^3J}{kg}(0.220kg)=385J$
b.
175 krad=1.75 kGy.
The RBE for these electrons is 1.50, so by equation 43.20, the equivalent dose in sieverts is $RBE \times 1.75kGy=2.63kSv$.
The RBE for these electrons is 1.50, so by equation 43.21, the equivalent dose in rem is $RBE \times 175krad=263krem$.
The energy deposited would be the same as in part a. Incidentally, this corresponds to only a small temperature rise.
