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Author Question: Which two classes of objects were critical to the Shapley-Curtiss Debate of 1920? A) white dwarfs ... (Read 15 times)

corkyiscool3328

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on: Jul 27, 2018
Which two classes of objects were critical to the Shapley-Curtiss Debate of 1920?
 
  A) white dwarfs and red giants
  B) open clusters and emission nebulae
  C) globular clusters and spiral nebulae
  D) emission nebulae and spiral nebulae
  E) planetary nebulae and white dwarfs

Question 2

All wavelengths of light travel at the same speed in a vacuum, and carry the same energy per photon.
 
  Indicate whether the statement is true or false


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InfiniteSteez

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

C

Answer to Question 2

FALSE


corkyiscool3328

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

lcapri7

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Reply 3 on: Yesterday
Wow, this really help

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