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Author Question: Which of these are fundamental physical quantities? a. space, time, and matter b. kilograms, ... (Read 62 times)

laurencescou

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on: Jul 28, 2018
Which of these are fundamental physical quantities?
 a. space, time, and matter
  b. kilograms, seconds, and meters
  c. length, time, and mass
  d. momentum, energy, and mass

Question 2

What makes stars twinkle?
 a. Variations of light output from the distant stars.
  b. Reflection by moving water.
  c. Being close enough to Earth to appear as tiny discs rather than points of light.
  d. The air near the surface of the earth is warmer than the air at the top of the atmosphere.
  e. Constant tiny changes in refraction as air molecules move.


morrie123456

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

C

Answer to Question 2

e


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