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Author Question: The current definition of the standard second of time is based on A) the frequency of radiation ... (Read 23 times)

fox

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on: Jul 29, 2018
The current definition of the standard second of time is based on
 
  A) the frequency of radiation emitted by cesium atoms.
  B) the earth's rotation rate.
  C) the duration of one year.
  D) the oscillation of a particular pendulum kept in France.

Question 2

The current definition of the standard meter of length is based on
 
  A) the distance between the earth's equator and north pole.
  B) the distance between the earth and the sun.
  C) the distance traveled by light in a vacuum.
  D) the length of a particular object kept in France.


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bitingbit

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

A

Answer to Question 2

C


fox

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Reply 2 on: Jul 29, 2018
Wow, this really help

daiying98

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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