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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 116 times)

Mr. Wonderful

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

D

Answer to Question 2

A


Mr. Wonderful

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

amandalm

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Reply 3 on: Yesterday
Excellent

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