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Author Question: The main way astronomers determine the physical and chemical properties of an object in the distant ... (Read 77 times)

genevieve1028

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on: Jul 27, 2018
The main way astronomers determine the physical and chemical properties of an object in the distant universe is through
 
  A) photography
  B) spectroscopy
  C) astrometry
  D) direct measurement

Question 2

What are the two fundamental laws that lie at the heart of quantum mechanics?
 
  A) the uncertainty principle and the exclusion principle
  B) the absoluteness of the speed of light and the equivalence principle
  C) the law of conservation of energy and the electromagnetic force law
  D) the law of conservation of angular momentum and the law of conservation of energy


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Jane

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Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

A


genevieve1028

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Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

Bigfoot1984

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

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