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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 159 times)

fnuegbu

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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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Answer to Question 1

C

Answer to Question 2

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



fnuegbu

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Both answers were spot on, thank you once again




 

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