General Physics, 2nd Edition
2nd Edition
ISBN: 9780471522782
Author: Morton M. Sternheim
Publisher: WILEY
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Question
Chapter 30, Problem 8E
(a)
To determine
The effective half-life for
(b)
To determine
The percentage of the remaining sample after
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General Physics, 2nd Edition
Ch. 30 - Prob. 1RQCh. 30 - Prob. 2RQCh. 30 - Prob. 3RQCh. 30 - Prob. 4RQCh. 30 - Prob. 5RQCh. 30 - Prob. 6RQCh. 30 - Prob. 7RQCh. 30 - Prob. 8RQCh. 30 - Prob. 9RQCh. 30 - Prob. 10RQ
Ch. 30 - Prob. 11RQCh. 30 - Prob. 12RQCh. 30 - Prob. 1ECh. 30 - Prob. 2ECh. 30 - Prob. 3ECh. 30 - Prob. 4ECh. 30 - Prob. 5ECh. 30 - Prob. 7ECh. 30 - Prob. 8ECh. 30 - Prob. 9ECh. 30 - Prob. 10ECh. 30 - Prob. 11ECh. 30 - Prob. 12ECh. 30 - Prob. 13ECh. 30 - Prob. 14ECh. 30 - Prob. 15ECh. 30 - Prob. 16ECh. 30 - Prob. 17ECh. 30 - Prob. 18ECh. 30 - Prob. 19ECh. 30 - Prob. 20ECh. 30 - Prob. 21ECh. 30 - Prob. 22ECh. 30 - Prob. 23ECh. 30 - Prob. 24ECh. 30 - Prob. 25ECh. 30 - Prob. 26ECh. 30 - Prob. 27ECh. 30 - Prob. 28ECh. 30 - Prob. 29ECh. 30 - Prob. 30ECh. 30 - Prob. 31ECh. 30 - Prob. 32ECh. 30 - Prob. 33ECh. 30 - Prob. 34ECh. 30 - Prob. 35ECh. 30 - Prob. 36ECh. 30 - Prob. 37ECh. 30 - Prob. 38ECh. 30 - Prob. 39ECh. 30 - Prob. 40ECh. 30 - Prob. 41ECh. 30 - Prob. 42ECh. 30 - Prob. 43ECh. 30 - Prob. 44ECh. 30 - Prob. 46ECh. 30 - Prob. 47ECh. 30 - Prob. 48ECh. 30 - Prob. 49ECh. 30 - Prob. 51ECh. 30 - Prob. 52ECh. 30 - Prob. 53ECh. 30 - Prob. 54ECh. 30 - Prob. 55ECh. 30 - Prob. 56ECh. 30 - Prob. 57ECh. 30 - Prob. 58ECh. 30 - Prob. 59ECh. 30 - Prob. 60ECh. 30 - Prob. 61ECh. 30 - Prob. 62ECh. 30 - Prob. 63ECh. 30 - Prob. 64ECh. 30 - Prob. 65E
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- Data from the appendices and the periodic table may be needed for these problems. Show that the activity of the 14C in 1.00 g of 12C found in living tissue is 0.250 Bq.arrow_forwardA beam of 168MeV nitrogen nuclei is used for cancer therapy. If this beam is directed onto a 0.200kg tumor and gives it a 2.00Sv dose, how many nitrogen nuclei were stopped? (Use an RBE of 20 for heavy ions.)arrow_forwardWhat time interval elapses while 90.0% of the radioactivity of a sample of 3372As disappears as measured by its activity? The half-life of 3372As is 26 h.arrow_forward
- 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_forwardData from the appendices and the periodic table may be needed for these problems. (a) Calculate the activity R in curies at 1.00 g of 226Ra. (b) Discuss why your answer is not exactly 1.00 Ci, given that the curie was originally supposed to be exactly the activity of a gram of radium.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
- Data from the appendices and the periodic table may be needed for these problems. A 60Co source is labeled 4.00 mCi, but its present activity is found to be 1.85107Bq. (a) What is the present activity in mCi? (b) How long ago did it actually have a 4.00—mCi activity?arrow_forward(a) Calculate the energy released in the neutroninduced fission (similar to the spontaneous fission in Example 32.3) n+238U96Sr+140Xe+3n, given m(96Sr)=95.921750u and m(140Xe)=139.92164. (b) This result is about 6 MeV greater than the result for spontaneous fission. Why? (c) Con?rm that the total number at nucleons and total charge are conserved in this reaction.arrow_forward(a) Background radiation due to 226Ra averages only 0.01 mSv/y, but it can range upward depending on where a 226Ra in the 80.0kg body of a man who receives a dose of 2.50mSv/y from it, noting that each 226Ra decay emits a 4.80MeV particle. You may person lives. Find the mass of neglect dose due to daughters and assume a constant amount, evenly distributed due to balanced ingestion and handily elimination. (b) Is it surprising that such a small mass could cause a measurable radiation dose? Explain.arrow_forward
- Large amounts of 65Zn are produced in copper exposed to accelerator beams. While machining contaminated copper, a physicist ingests 50.0 Ci of 65Zn. Each 65Zn decay emits an average ray energy of 0.550 MeV, 40.0% of which is absorbed in the scientist’s 75.0kg body. What dose in mSv is caused by this in one day?arrow_forward(a) A cancer patient is exposed to rays from a 5000Ci 60Co transillumination unit for 32.0 s. The rays are collimated in such a manner that only 1.00% of them strike the patient. Of those, 20.0% are absorbed in a tumor having a mass of 1.50 kg. What is the dose in rem to the tumor, it the average energy per decay is 1.25 MeV? None of the s from the decay reach the patient. (b) Is the dose consistent with stated therapeutic doses?arrow_forward(a) Find the total energy released in MeV in each carbon cycle (elaborated in the above problem) including the annihilation energy. (b) How does this compare with the protonproton cycle output?arrow_forward
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