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Author Question: Radioactive isotopes are useful for A) dating the ages of objects. B) tracing the path of ... (Read 77 times)

jlmhmf

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  • Posts: 552
on: Jul 29, 2018
Radioactive isotopes are useful for
 
  A) dating the ages of objects.
  B) tracing the path of certain chemicals.
  C) cancer therapy.
  D) All of the above.
  E) None of the above.

Question 2

A 2.0-kg ball is moving with a constant speed of 5.0 m/s in a horizontal circle whose diameter is 1.0 m. What is the magnitude of the sum of the forces exerted on the ball?
 
  A) 0 N
  B) 20 N
  C) 40 N
  D) 50 N
  E) 100 N


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jasonq

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

D

Answer to Question 2

E


jlmhmf

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  • Posts: 552
Reply 2 on: Jul 29, 2018
Excellent

peter

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Reply 3 on: Yesterday
Gracias!

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