1. The half-life of a certain radioactive material is 1000 years. What fraction of the original amountremains after 1500 years?2. Just before 6:00 PM the body of a murder victim is found in a room that is kept at a constant temperatureof 20 °C. At 6:00 PM, the temperature of the body is 27 °C and at 7:00 PM it is 23 °C. If at the time ofdeath the temperature of the body is 35 °C, what was the time of death?

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Answered: 1. The half-life of a certain…

1. The half-life of a certain radioactive material is 1000 years. What fraction of the original amount remains after 1500 years?

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter2: Matter And Energy

Section: Chapter Questions

Problem 16RQ: Whose law states that the volume of a gas varies inversely with the absolute pressure, as long as...

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Question

1. The half-life of a certain radioactive material is 1000 years. What fraction of the original amount
remains after 1500 years?
2. Just before 6:00 PM the body of a murder victim is found in a room that is kept at a constant temperature
of 20 °C. At 6:00 PM, the temperature of the body is 27 °C and at 7:00 PM it is 23 °C. If at the time of
death the temperature of the body is 35 °C, what was the time of death?

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