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Author Question: A car travels 20 km west and then 20 km south. What is the magnitude of its displacement vector? ... (Read 76 times)

Mr. Wonderful

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A car travels 20 km west and then 20 km south. What is the magnitude of its displacement vector?
 
  A) 20 km B) 0 km C) 40 km D) 28 km

Question 2

According to the current theory or standard model of elementary particles, which one of the following is truly an elementary particle?
 
  A) electron
  B) neutron
  C) proton
  D) All of the above.
  E) None of the above.



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britb2u

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Answer to Question 1

D

Answer to Question 2

A




Mr. Wonderful

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Reply 2 on: Jul 29, 2018
Thanks for the timely response, appreciate it


lkanara2

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

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