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Author Question: In mechanics, physicists use three basic quantities to derive additional quantities. Mass is one of ... (Read 229 times)

sabina

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on: Jul 28, 2018
In mechanics, physicists use three basic quantities to derive additional quantities. Mass is one of the three quantities. What are the other two?
 a. length and force
  c. length and time
  b. power and force
  d. force and time

Question 2

The current standard definition for the second has been based on which of the following?
 a. characteristic frequency of the light from cesium atoms
  b. average solar day
  c. sidereal day
  d. Greenwich Civil Time


ghepp

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Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

A


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