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Author Question: The appearance of the great range of brightness among stars is due to A) the differences in ... (Read 11 times)

cool

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on: Jul 29, 2018
The appearance of the great range of brightness among stars is due to
 
  A)
 
  the differences in the amount of light different stars emit.
  B)
 
  the differences in the distances of stars from us.
  C)
 
  both of the given answers
  D)
 
  none of the given answers

Question 2

An object is placed 21 cm from a concave lens having a focal length of magnitude 25 cm. What is the magnification?
 
  A) -0.54
  B) 0.54
  C) -0.32
  D) -0.22
  E) 0.22


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stallen

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Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

B


cool

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Reply 2 on: Jul 29, 2018
Gracias!

xiazhe

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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