Any radiation treatment has the potential to damage DNA in healthy cells. Which lists therapeutic uses of radiation based on the likelihood of affecting healthy cells in order from least likely to most likely?

deep external beam radiation therapy, brachytherapy, radiopharmaceuticals
radiopharmaceuticals, deep external beam radiation therapy, brachytherapy
brachytherapy, radiopharmaceuticals, deep external beam radiation therapy
radiopharmaceuticals, brachytherapy, deep external beam radiation therapy

Wo small variable-thrust jets are actuated to keep the spacecraft angular velocity about the z-axis constant at ? 0 = 1.16 rad/s as the two telescoping booms are extended from r1 = 1.18 m to r2 = 4.69 m at a constant rate over a period of 124 seconds. the small 19-kg experiment modules at the ends of the booms may be treated as particles, and the mass of the rigid booms is negligible. determine the necessary thrust t for each jet as a function of time where t = 0 is the time when the telescoping action is begun. after you have the general expression for t, answer the questions. show work.