Introduction To Health Physics
5th Edition
ISBN: 9780071835275
Author: Johnson, Thomas E. (thomas Edward), Cember, Herman.
Publisher: Mcgraw-hill Education,
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Chapter 4, Problem 4.12P
Calculate the number of beta particles emitted per minute by 1 kg of KC1 if
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Chapter 4 Solutions
Introduction To Health Physics
Ch. 4 - Prob. 4.1PCh. 4 - Prob. 4.2PCh. 4 - Prob. 4.3PCh. 4 - Prob. 4.4PCh. 4 - If we start with 5 mg of 210Pb , what would be the...Ch. 4 - Prob. 4.6PCh. 4 - Prob. 4.7PCh. 4 - Prob. 4.8PCh. 4 - Prob. 4.9PCh. 4 - For use in carcinogenesis studies, benzo(a)pyrene...
Ch. 4 - Prob. 4.11PCh. 4 - Calculate the number of beta particles emitted per...Ch. 4 - Prob. 4.13PCh. 4 - Prob. 4.14PCh. 4 - How much 234U is there in 1 metric ton of the...Ch. 4 - Prob. 4.16PCh. 4 - Prob. 4.17PCh. 4 - Prob. 4.18PCh. 4 - The mean concentration of potassium in crustal...Ch. 4 - Prob. 4.20PCh. 4 - Prob. 4.21PCh. 4 - Prob. 4.22PCh. 4 - Prob. 4.23PCh. 4 - Prob. 4.24PCh. 4 - Prob. 4.25PCh. 4 - Prob. 4.26PCh. 4 - Prob. 4.27PCh. 4 - Prob. 4.28PCh. 4 - Prob. 4.29PCh. 4 - Prob. 4.31PCh. 4 - Prob. 4.32PCh. 4 - Prob. 4.33PCh. 4 - Prob. 4.34PCh. 4 - Prob. 4.35PCh. 4 - Prob. 4.36PCh. 4 - Prob. 4.37PCh. 4 - Prob. 4.38PCh. 4 - Prob. 4.39PCh. 4 - Prob. 4.40PCh. 4 - Prob. 4.41PCh. 4 - Prob. 4.42PCh. 4 - Prob. 4.43PCh. 4 - What is the (a) half-life? (b) mean life (in...Ch. 4 - Prob. 4.45PCh. 4 - Prob. 4.46PCh. 4 - Prob. 4.47PCh. 4 - Prob. 4.48PCh. 4 - Prob. 4.49PCh. 4 - Prob. 4.53PCh. 4 - Prob. 4.54PCh. 4 - Prob. 4.55P
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- What is the dose in mSv for: (a) a 0.1 Gy xray? (b) 2.5 mGy of neutron exposure to the eye? (c) 1.5 mGy of exposure?arrow_forwardCalculate the dose in Sv to the chest at a patient given an xray under the following conditions. The xray beam intensity is 1.50 W/m2, the area of the chest exposed is 0.0750 m2 35.0% of the xrays are absorbed in 20.0 kg of tissue, and the exposure time is 0.250 s.arrow_forwardFind the radiation dose in Gy for: (a) A 10-mSv fluoroscopic X-ray series, (b) 50 mSv of skin exposure by an a emitter, (c) 160 mSv of and rays from the 40K in your body.arrow_forward
- A living specimen in equilibrium with the atmosphere contains one atom of 14C (half-life = 5 730 yr) for every 7.7 x 1011 stable carbon atoms. An archeological sample of wood (cellulose, C12H22011) contains 30.0 mg of carbon. When the sample is placed inside a shielded beta counter with 86% counting efficiency, 833 counts are accumulated in one week. Assuming that the cosmic-ray flux and the Earth's atmosphere have not changed appreciably since the sample was formed, find the age of the sample in the nearest year (1 yr ~ 3.156 × 10' s).arrow_forwardExperimentally, it is found that natural potassium emits 31 beta particles per second per gram and 3.4 gamma rays per second per gram. With this data, determine the half- life period of K40. (The isotopic concentration of K40 is 0.0118% .)arrow_forwardCalculate the radiation dosage (in rads.) for an 77-kg person that is exposed for 6 .0 seconds to a 3.0 C source of beta radiation Assume that 100% of the radiation is absorbed and each beta particle has an energy of 1.8x10-13 J.arrow_forward
- Measurements of the radioactivity of a certain isotope tell you that the decay rate decreases from 8265 decays per minute to 3055 decays per minute over a period of 5.00 days. What is the half-life T1/2 1/2 of this isotope? Express your answer numerically, in days, to three significant figures.arrow_forwardA living specimen in equilibrium with the atmosphere contains one atom of 14C (half-life = 5 730 yr) for every 7.7 × 1011 stable carbon atoms. An archeological sample of wood (cellulose, C12H22O11) contains 21.0 mg of carbon. When the sample is placed inside a shielded beta counter, 837 counts are accumulated in one week. Assuming that the cosmic-ray flux and the Earth’s atmosphere have not changed appreciably since the sample was formed, find the age of the sample. ( Atomic mass of C is 12u)arrow_forwardThe C14 with an activity of 10 Ci is in a 1.0 mm thick lead box. Calculate the number of beta particles per second at just outside of the box.arrow_forward
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