College Physics
10th Edition
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter26: Relativity
Section: Chapter Questions
Problem 33P: A chain of nuclear reactions in the Suns core converts four protons into a helium nucleus. (a) What...
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- decay in the discharging process to half of its maximum (V = Vo/2). This time is the half-life: t1= t1/2.
20.82 ms, 3.977v
T1= 1.4 m/s
- Measure the time it takes for the voltage to decay to one-quarter (V = Vo/4 = (Vo/2)2) of its maximum. This is two half-lives: t2 = 2t1/2. Then divide this time by two to find the half-life (t1/2 = t2/2)
20.2-24.00 = 3.2
T2 = 3.2/2 = 1.6m/s
- Measure the time it takes for the voltage to grow to one-eighth (V = Vo/8 = (Vo/2)3) of its This is three half-lives, t3 = 3t1/2. Then divide this time by three to find the half-life, t1/2 = t3/3.
20.8 – 22.28= 1.48m/s
T3= 1.48/3 = 0.49 m/s
- Take the average of the three measured values of the half-life. Estimate the precision of the measurement and state it as {half-life ± precision}
1.4 + 1.6 + 0.49 / 3 = 1.16 half-life +- Precision
Estimate the time constant from the average half-life.
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