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Author Question: A radioactive atom has 98 protons and 249 nucleons. If it undergoes alpha decay, what are the number ... (Read 140 times)

fnuegbu

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on: Jul 29, 2018
A radioactive atom has 98 protons and 249 nucleons. If it undergoes alpha decay, what are the number of protons and nucleons, respectively, in the daughter nucleus?
 
  A) 96, 247 B) 94, 247 C) 96, 245 D) 100, 249 E) 100, 245

Question 2

A long thin rod of length L has a linear density (x) = A(L-x)2 where x is the distance from the left end of the rod. (a) How far is the center of mass of the rod from the left end of the rod? (b) What is the mass of the rod?
 
  What will be an ideal response?


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firehawk60

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Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

(a) L/4
(b) AL3/3


fnuegbu

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


firehawk60

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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