1. [l1 Points] DETAILS OSCOLPHYSZO16 32.2.WA.002. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A beam of nitrogen nuclei is used for cancer therapy. Each nucleus has 167 MeV of energy. If the nitrogen beam is directed onto a 0.232 kg tumor and gives it a 200 rern dose, how many nitrogen nuclei were absorbed? (Use an RBE of 20 for heavy ions.) Smell Additional Materials L3 Reading 2. [-/1 Points] DETAILS OSCOLPHYS2016 32.2.WA.004. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A patient absorbs a 29-rad dose of a-particles (RBE = 20) directly on a tumor. If protons were used instead (RBE = 10), how many rad would be needed to cause the same damage? rad Additional Materials Reading3. [/1 Points] DETAILS OSCOLPHYSZO16 32.3.WA,008, MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A patient with a welldefined tumor absorbs 62 rad of heavy ions during radiotherapy. For a patient receiving 200keV x-rays, how many rad would be needed to receive an equivalent dose as the patient with the tumor? (Assume the heavy ions have a RBE of 20.) Additional Materials L3 Reading 4. [-l1 Points] DETAILS OSCOLPHYSZO16 32.3.WA.O12. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A patient with a welldefined tumor absorbs 65 rad of protons to the eye during radiotherapy. For a patient receiving 200keV x-rays, how many rad would be needed to receive an equivalent dose as the patient with the tumor? (Assume the protons to the eye have a RBE of 32.) Additional Materials L'] Reading 6. [-l1 Points] DETAILS OSCOLPHYSZO16 32.5.WA.018. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER When H-2 and H-3 nuclei are far apart, they interact by means of Coulomb repulsion. If they are to undergo fusion, they must get closer than 1.01 X 10'14 m (a) Determine the total energy (in MeV) needed by these two nuclei in order to overcome the Coulomb repulsion and get close enough for nuclear forces to cause fusion. MeV (b) The nuclei may be given this amount of kinetic energy by heating them to a very high temperature. If this energy is divided equally between the two nuclei, determine the required temperature (in K). :iK Additional Materials l.:l Reading