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Author Question: You ride on an elevator that is moving with constant upward acceleration while standing on a ... (Read 192 times)

sarasara

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on: Jul 29, 2018
You ride on an elevator that is moving with constant upward acceleration while standing on a bathroom scale. The reading on the scale is
 
  A)
 
  equal to your true weight, mg.
  B)
 
  more than your true weight, mg.
  C)
 
  less than your true weight, mg.
  D)
 
  zero.
  E)
 
  could be more or less than your true weight, mg, depending on the magnitude of the acceleration.

Question 2

The vertical displacement of a string is given by y(x,t) = (6.00 mm) cos(3.25 m-1)x - (7.22 s-1)t. What is the speed of the wave?
 
  A)
 
  0.450 m/s
 
  B)
 
  1.41 m/s
 
  C)
 
  2.22 m/s
 
  D)
 
  3.16 m/s
 
  E)
 
  23.5 m/s


kusterl

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

B

Answer to Question 2

C


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sarasara

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


kusterl

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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