College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Help me to solve this proplems
●
Example:
An archaeologist finds a 25.0 g piece of charcoal in
the ruins of an ancient city. The sample shows a ¹4C
activity of 250 decays/min. How long has the tree
from which this charcoal came been dead?
امعة الإمام عبدالرحمن بن فيصل
M
IMAM ABDULRAHMAN BIN FAISAL UNIVERSIT
m NA
M(A)
R₁ = Noλ
R=R₁e-at
N =
N(¹4C)
N(¹2C)
In 2 0.693
=
λ
=
t1/2 λ
pas
= 1.3 x 10-12
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Transcribed Image Text:● Example: An archaeologist finds a 25.0 g piece of charcoal in the ruins of an ancient city. The sample shows a ¹4C activity of 250 decays/min. How long has the tree from which this charcoal came been dead? امعة الإمام عبدالرحمن بن فيصل M IMAM ABDULRAHMAN BIN FAISAL UNIVERSIT m NA M(A) R₁ = Noλ R=R₁e-at N = N(¹4C) N(¹2C) In 2 0.693 = λ = t1/2 λ pas = 1.3 x 10-12
Example:
Consider the following a decay
226
88
Ra
Alpha Decay
Rn
222
86
a) Calculate Q value for this process.
b) Calculate Ka
2
جامعة الإمام عبد الرحمن بن فيصل
16
IMAM ABDULRAHMAN BIN FAISAL UNIVERSITY
He
M(Ra)=226.025406 u
M(Rn)=222.017574 u
M(He)=4.002603 u
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Transcribed Image Text:Example: Consider the following a decay 226 88 Ra Alpha Decay Rn 222 86 a) Calculate Q value for this process. b) Calculate Ka 2 جامعة الإمام عبد الرحمن بن فيصل 16 IMAM ABDULRAHMAN BIN FAISAL UNIVERSITY He M(Ra)=226.025406 u M(Rn)=222.017574 u M(He)=4.002603 u Image Upload
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