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Author Question: Choose the lens having the shortest focal length. a. b. c. ... (Read 101 times)

neverstopbelieb

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on: Jul 28, 2018
Choose the lens having the shortest focal length.
   
  a.
 
  b.
 
   
  c.
 

Question 2

A 0.20-km wide river has a uniform flow speed of 3.0 m/s toward the east. A boat with a speed of 8.0 m/s relative to the water leaves the south bank and heads in such a way that it crosses to a point directly north of its departure point. How long does it take the boat to cross the river?
 a. 29 s
  b. 23 s
  c. 25 s
  d. 27 s
  e. 17 s


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tennis14576

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

a

Answer to Question 2

d


neverstopbelieb

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Reply #2 on: Jul 28, 2018
Thank you!


tennis14576

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Reply #3 on: Jul 28, 2018
Always glad to help...


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