Physics for Scientists and Engineers With Modern Physics
9th Edition
ISBN: 9781133953982
Author: SERWAY, Raymond A./
Publisher: Cengage Learning
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Chapter 45, Problem 68AP
To determine
The absorbed dose during the period of 10.0 days.
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A 73.0 kg person experiences a whole-body exposure to alpha radiation with an energy of 1.50 MeVMeV. A total of 5.40×1012 alpha particles is absorbed. Use the Table of Relative biological effectiveness (RBE) for several types of radiation.
A) What is the absorbed dose in rad? Express your answer in rads.
B) What is the equivalent dose in rem? Express your answer in rem.
C) If the source is 0.0100 gg of 226Ra (half-life 1600 years) somewhere in the body, what is the activity of the source? Express your answer in decays per second.
D) If all the alpha particles produced are absorbed, what time is required for this dose to be delivered? Express your answer with the appropriate units.
A 95 kgkg patient swallows a 33 μCiμCi beta emitter with a half-life of 5.0 days, and the radioactive nuclei are quickly distributed throughout his body. The beta particles are emitted with an average energy of 0.35 MeVMeV, 90%% of which is absorbed by the body.
What dose equivalent does the patient receive in the first week?
A 70-kg worker is accidentally exposed for 2.0 minutes to a 21-mCi source of beta radiation from a sample of strontium-90. (a) What is the activity of the radiation source in cps?(b) Suppose that each beta particle has an energy of 0.547 MeV (1 MeV = 1.609 x 10-13 J) and 45% of the radiation is absorbed. Assuming that the absorbed radiation is spread over the person’s entire body,calculate the absorbed dose in rads and in grays.
(c) If the beta particles has an RBE of 1.0, what is the effective absorbed dose in mrem and in sieverts?
Chapter 45 Solutions
Physics for Scientists and Engineers With Modern Physics
Ch. 45.1 - When a nucleus undergoes fission, the two daughter...Ch. 45.2 - Prob. 45.2QQCh. 45.3 - Prob. 45.3QQCh. 45.4 - Prob. 45.4QQCh. 45 - Prob. 1OQCh. 45 - Prob. 2OQCh. 45 - Prob. 3OQCh. 45 - Prob. 4OQCh. 45 - Prob. 5OQCh. 45 - Prob. 6OQ
Ch. 45 - Prob. 7OQCh. 45 - Prob. 8OQCh. 45 - Prob. 9OQCh. 45 - Prob. 1CQCh. 45 - Prob. 2CQCh. 45 - Prob. 3CQCh. 45 - Prob. 4CQCh. 45 - Prob. 5CQCh. 45 - Prob. 6CQCh. 45 - Prob. 7CQCh. 45 - Prob. 8CQCh. 45 - Prob. 1PCh. 45 - Prob. 2PCh. 45 - Prob. 3PCh. 45 - Prob. 4PCh. 45 - Prob. 5PCh. 45 - Prob. 6PCh. 45 - Prob. 7PCh. 45 - Prob. 8PCh. 45 - Prob. 9PCh. 45 - Prob. 10PCh. 45 - Prob. 11PCh. 45 - Prob. 12PCh. 45 - Prob. 13PCh. 45 - Prob. 14PCh. 45 - Prob. 15PCh. 45 - Prob. 16PCh. 45 - Prob. 18PCh. 45 - Prob. 19PCh. 45 - Prob. 20PCh. 45 - Prob. 21PCh. 45 - Prob. 22PCh. 45 - Prob. 23PCh. 45 - Prob. 24PCh. 45 - Prob. 25PCh. 45 - Prob. 26PCh. 45 - Prob. 27PCh. 45 - Prob. 28PCh. 45 - Prob. 29PCh. 45 - Prob. 30PCh. 45 - Prob. 31PCh. 45 - Prob. 32PCh. 45 - Prob. 33PCh. 45 - Prob. 34PCh. 45 - Prob. 35PCh. 45 - Prob. 36PCh. 45 - Prob. 37PCh. 45 - Prob. 41PCh. 45 - Prob. 42PCh. 45 - Prob. 43PCh. 45 - Prob. 44PCh. 45 - Prob. 45PCh. 45 - Prob. 46APCh. 45 - Prob. 47APCh. 45 - Prob. 48APCh. 45 - Prob. 49APCh. 45 - Prob. 51APCh. 45 - Prob. 52APCh. 45 - Prob. 53APCh. 45 - Prob. 54APCh. 45 - Prob. 55APCh. 45 - Prob. 56APCh. 45 - Prob. 57APCh. 45 - Prob. 58APCh. 45 - Prob. 59APCh. 45 - Prob. 60APCh. 45 - Prob. 61APCh. 45 - Prob. 62APCh. 45 - Prob. 63APCh. 45 - Prob. 64APCh. 45 - Prob. 65APCh. 45 - Prob. 66APCh. 45 - Prob. 67APCh. 45 - Prob. 68APCh. 45 - Prob. 69APCh. 45 - Prob. 70APCh. 45 - Prob. 71APCh. 45 - Prob. 72APCh. 45 - Prob. 73AP
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- A 73.0 kg person experiences a whole-body exposure to alpha radiation with energy of 1.50 MeVMeV. A total of 5.40×1012 alpha particles is absorbed. Use the Table of Relative biological effectiveness (RBE) for several types of radiation. A) What is the absorbed dose in rad? Express your answer in rads. B) What is the equivalent dose in rem? Express your answer in rem. C) If the source is 0.0100 g of 226Ra (half-life 1600 years) somewhere in the body, what is the activity of the source? Express your answer in decays per second. D) If all the alpha particles produced are absorbed, what time is required for this dose to be delivered? Express your answer with the appropriate units.arrow_forwardDuring a 2-h period of radiation therapy, alpha radiation is deposited into a patient's body at a rate of 3.3 x 10-8 J/s. What effective dose does the 59-kg patient receive? (Units: mSv) Use the following table of RBEs. Radiation type RBE X-rays 1 Gamma rays 1 Electrons 1 Protons 2 Alpha particles 20arrow_forwardA beam of 5.0 MeV alpha particles (q-2e) has a cross-sectional area of 1.50 cm2. It is incident on flesh (p-950 kg/m³) and penetrates to a depth of 0.70 mm. a) What dose in Gy does the beam provide to the flesh in a time of 3.0 s? b) What effective dose does it provide? Assume the beam to carry a current of 2.50 x 109 A and to have QF - 14.arrow_forward
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