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Author Question: You drop a stone down a well. You hear the splash 2.23 s later. How deep is the well? The speed of ... (Read 47 times)

lidoalex

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on: Jul 29, 2018
You drop a stone down a well. You hear the splash 2.23 s later. How deep is the well? The speed of sound in air is 343 m/s.
 
  A)
 
  6.96 m
 
  B)
 
  20.2 m
 
  C)
 
  22.9 m
 
  D)
 
  18.8 m
 
  E)
 
  20.0 m

Question 2

The objective lens of a refracting telescope has a focal length of 60 cm and the eyepiece a focal length of 8.0 cm. What is the angular magnification of the telescope?
 
  A)
 
  34
  B)
 
  480
  C)
 
  68
  D)
 
  0
  E)
 
  7.5


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TheNamesImani

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

C

Answer to Question 2

E


lidoalex

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Reply 2 on: Jul 29, 2018
Wow, this really help

flexer1n1

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

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