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Author Question: A child is riding a merry-go-round, which has an instantaneous angular speed of 1.25 rad/s and an ... (Read 87 times)

mpobi80

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on: Jul 29, 2018
A child is riding a merry-go-round, which has an instantaneous angular speed of 1.25 rad/s and an angular acceleration of 0.745 rad/s2.
 
  The child is standing 4.65 m from the center of the merry-go-round. (a) What is the magnitude of the acceleration of the child?
  (b) What angle does the acceleration of the child make with the tangential direction?

Question 2

A laser with a power of 1.0 mW has a beam radius of 1.0 mm. What is the peak value of the electric field in that beam?
 
  A)
 
  490 V/m
  B)
 
  840 V/m
  C)
 
  65 V/m
  D)
 
  120 V/m
  E)
 
  22 V/m


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parshano

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

(a) 8.05 m/s2
(b) 64.5

Answer to Question 2

A


mpobi80

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Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review

phuda

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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