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Author Question: The planet Mercury a. has retrograde motion. b. is the closest planet to Venus. c. is the ... (Read 121 times)

Arii_bell

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on: Jul 28, 2018
The planet Mercury
 a. has retrograde motion.
  b. is the closest planet to Venus.
  c. is the smallest of the terrestrial planets.
  d. has a uniquely circular orbit.

Question 2

A Doppler red shift indicates
 a. a shift toward lower frequencies.
  b. a shift toward shorter wavelengths.
  c. that a light source is approaching relative to the observer.
  d. none of these.


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ErinKing

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

c

Answer to Question 2

a


Arii_bell

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Reply 2 on: Jul 28, 2018
Thanks for the timely response, appreciate it

peter

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Reply 3 on: Yesterday
Excellent

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