Physics for Scientists and Engineers With Modern Physics
9th Edition
ISBN: 9781133953982
Author: SERWAY, Raymond A./
Publisher: Cengage Learning
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Chapter 44, Problem 4OQ
To determine
The approximate fraction undecayed nuclei of radium-224 remaining after two weeks.
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The barium isotope 133Ba has a half-life of 10.5 years. A sample begins with 1.0 × 1010 133Ba atoms. How many are left after (a) 2 years, (b) 20 years, and (c) 200 years?
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Chapter 44 Solutions
Physics for Scientists and Engineers With Modern Physics
Ch. 44.1 - Prob. 44.1QQCh. 44.5 - Prob. 44.3QQCh. 44.5 - Which of the following is the correct daughter...Ch. 44 - Prob. 1OQCh. 44 - Prob. 2OQCh. 44 - Prob. 3OQCh. 44 - Prob. 4OQCh. 44 - Prob. 5OQCh. 44 - Prob. 6OQCh. 44 - Prob. 7OQ
Ch. 44 - Prob. 8OQCh. 44 - Prob. 9OQCh. 44 - Prob. 10OQCh. 44 - Prob. 11OQCh. 44 - Prob. 12OQCh. 44 - Prob. 13OQCh. 44 - Prob. 1CQCh. 44 - Prob. 2CQCh. 44 - Prob. 3CQCh. 44 - Prob. 4CQCh. 44 - Prob. 5CQCh. 44 - Prob. 6CQCh. 44 - Prob. 7CQCh. 44 - Prob. 8CQCh. 44 - Prob. 9CQCh. 44 - Prob. 10CQCh. 44 - Prob. 11CQCh. 44 - Prob. 12CQCh. 44 - Prob. 13CQCh. 44 - Prob. 14CQCh. 44 - Prob. 15CQCh. 44 - Prob. 16CQCh. 44 - Prob. 17CQCh. 44 - Prob. 1PCh. 44 - Prob. 2PCh. 44 - Prob. 3PCh. 44 - Prob. 4PCh. 44 - Prob. 5PCh. 44 - Prob. 6PCh. 44 - Prob. 7PCh. 44 - Prob. 8PCh. 44 - Prob. 9PCh. 44 - Prob. 10PCh. 44 - Prob. 11PCh. 44 - Prob. 12PCh. 44 - Prob. 13PCh. 44 - Prob. 14PCh. 44 - Prob. 15PCh. 44 - Prob. 16PCh. 44 - Prob. 17PCh. 44 - Prob. 18PCh. 44 - Prob. 19PCh. 44 - Prob. 20PCh. 44 - Prob. 21PCh. 44 - Prob. 22PCh. 44 - Prob. 23PCh. 44 - Prob. 24PCh. 44 - Prob. 25PCh. 44 - Prob. 26PCh. 44 - Prob. 27PCh. 44 - Prob. 28PCh. 44 - Prob. 29PCh. 44 - Prob. 31PCh. 44 - Prob. 32PCh. 44 - Prob. 33PCh. 44 - Prob. 34PCh. 44 - Prob. 35PCh. 44 - Prob. 36PCh. 44 - Prob. 37PCh. 44 - Prob. 38PCh. 44 - Prob. 39PCh. 44 - Prob. 40PCh. 44 - Prob. 41PCh. 44 - Prob. 42PCh. 44 - Prob. 43PCh. 44 - Prob. 44PCh. 44 - Prob. 45PCh. 44 - Prob. 46PCh. 44 - Prob. 47PCh. 44 - Prob. 48PCh. 44 - Prob. 49PCh. 44 - Prob. 50PCh. 44 - Prob. 51PCh. 44 - Prob. 52PCh. 44 - Prob. 53PCh. 44 - Prob. 54APCh. 44 - Prob. 55APCh. 44 - Prob. 56APCh. 44 - Prob. 57APCh. 44 - Prob. 58APCh. 44 - Prob. 59APCh. 44 - Prob. 60APCh. 44 - Prob. 61APCh. 44 - Prob. 62APCh. 44 - Prob. 63APCh. 44 - Prob. 64APCh. 44 - Prob. 65APCh. 44 - Prob. 66APCh. 44 - Prob. 67APCh. 44 - Prob. 68APCh. 44 - Prob. 69APCh. 44 - Prob. 70APCh. 44 - Prob. 71APCh. 44 - Prob. 72APCh. 44 - As part of his discovery of the neutron in 1932,...Ch. 44 - Prob. 74APCh. 44 - Prob. 75APCh. 44 - Prob. 76APCh. 44 - Prob. 77CPCh. 44 - Prob. 78CP
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Suppose you have a pure radioactive material with a half-life of T1/2. You begin with N0 undecayed nuclei of the material at t = 0. At t=12T1/2, how many of the nuclei have decayed? (a) 14N0 (b) 12N0(C) 34N0 (d) 0.707N0 (e) 0.293N0arrow_forwardA radioactive sample initially contains 2.40102 mol of a radioactive material whose half-life is 6.00 h. How many moles of the radioactive material remain after 6.00 h? After 12.0 h? After 36.0 h?arrow_forwardNo stable nuclides exist that have Z greater than ___. (10.3)arrow_forward
- A radioactive sample has an initial activity of 6.55 × 10º Bq (1Bq is one disintegration per second). Four hours later the sample has an activity of 1.02 × 10® Bq. What is the half-life of the material? (a) 10 minutes (b) 20 minutes (c) 30 minutes (d) 40 minutesarrow_forwardThe cadmium isotope 109Cd has a half-life of 462 days. A sample begins with 1.0 × 1012 109Cd atoms. How many are left after (a) 50 days, (b) 500 days, and (c) 5000 days?arrow_forwardRadon is a colorless, odorless, radioactive noble gas. Because it occurs naturally in soil, it can become trapped in homes and buildings. Despite a short half-life of only 3.83 days, high concentrations of radon indoors can pose a risk of lung cancer. (For this reason, many modern homes and buildings have radon reduction systems installed.) Consider an enclosed space in a building which contains 3.03 g of radon gas at time t = 0. What mass of radon (in g) will remain in this space after 2.20 days have passed? |9 Need Help? Read Itarrow_forward
- The half-life of radon-222 is about 3.823 days. (a) Determine the decay constant for radon-222. 2.1x10-65-¹ ✓ (b) What percentage of a sample remains undecayed after two weeks (1.21 x 106 s)? %arrow_forwardRadon-222 decays at a continuous rate of 17.3% per day. Suppose a scientist begins with a sample of 460 mg of Radon-222. How much will remain in 12 days? Round answer to 5 decimal places.arrow_forwardRadioactive element AA can decay to either element BB or element CC.The decay depends on chance, but the ratio of the resulting number of BB atoms to the resulting number of CC atoms is always 2/1.The decay has a half-life of 8.00 days.We start with a sample of pure AA. How long must we wait until the number of CC atoms is 1.50 times the number of AAatoms?arrow_forward
- Question 1. Tritium has a half - life of 12.33 years. What fraction of the nuclei in a tritium sample will remain (a) after 5.00 yr? (b) after 10.0 yr? (с) after 123.3 yг?arrow_forwardA geologist finds an old rock and wants to determine its age using rubidium-strontium dating. This is possible because 87Rb, which has a half-life of 4.75×1010 y, undergoes ? − decay and becomes 87Sr. The geologist determines that the ratio of 87Sr to 87Rb is 0.219. Assuming there was no 87Sr in the rock when it was formed, determine the age of the rock.age of rock =arrow_forwardTritium has a half-life of 12.5 y undergoing beta decay. What fraction of a sample of pure tritium will remain undecayed after 25 yarrow_forward
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