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Author Question: Polonium-215 alpha decays with a half life of 1.8 ms. (a) How much is left after 1. second? (b) ... (Read 92 times)

JMatthes

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on: Jul 27, 2018
Polonium-215 alpha decays with a half life of 1.8 ms.
 
  (a) How much is left after 1. second?
  (b) What is the daughter nucleus?

Question 2

If a new force were discovered that had a range on the order of 10-18 meters:
 
  (a) predict the mass of the exchange particle.
  (b) how long is conservation of energy violated in the exchange of this particle?


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kingdude89

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Reply #1 on: Jul 27, 2018
Answer to Question 1

(a) fraction remaining: N/No = 4.2  10-170
(b) Lead-211

Answer to Question 2

(a) 4  10-25 kilograms
(b) 3  10-27 seconds


JMatthes

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Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

coreycathey

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Reply 3 on: Yesterday
Excellent

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