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Author Question: The decay rate of a radioactive sample decreases from 175 kBq to 12.4 kBq in 18.3 s. What is the ... (Read 109 times)

codyclark

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on: Jul 29, 2018
The decay rate of a radioactive sample decreases from 175 kBq to 12.4 kBq in 18.3 s. What is the mean life (time constant) of this sample?
 
  What will be an ideal response?

Question 2

When monochromatic light illuminates a grating with 7000 lines per centimeter, its second order maximum is at 62.4. What is the wavelength of the light?
 
  A) 336 nm B) 752 nm C) 633 nm D) 452 nm E) 363 nm


frankwu0507

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

6.91 s

Answer to Question 2

C


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codyclark

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


frankwu0507

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


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