Integrated Concepts

One problem with x rays is that they are not sensed. Calculate the temperature increase of a researcher exposed in a few seconds to a nearly fatal accidental dose of x rays under the following conditions. The energy of the x-ray photons is 200 keV, and $4 . \text{00} \times \text{10}^{\text{13}}$ of them are absorbed per kilogram of tissue, the specific heat of which is $0 . \text{830 kcal}/\text{kg} \cdot º\text{C}$. (Note that medical diagnostic x-ray machines cannot produce an intensity this great.)