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Author Question: Antiquity's greatest observer of stars was named a. Hipparchus. b. Eratosthenes. c. Aristotle. ... (Read 15 times)

fahad

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on: Jul 28, 2018
Antiquity's greatest observer of stars was named
 a. Hipparchus.
  b. Eratosthenes.
  c. Aristotle.
  d. Imhotep.

Question 2

The energy differences in some of the rotational energy levels of the water molecule allow
 a. X-rays to be produced.
  b. cooking with microwaves.
  c. visible spectral lines to be formed.
  d. lasers to operate.


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JaynaD87

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

a

Answer to Question 2

b


fahad

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

mammy1697

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Reply 3 on: Yesterday
Excellent

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