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Author Question: In many cartoon shows, a character runs off a cliff, realizes his predicament, and lets out a ... (Read 35 times)

Destiiny22

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In many cartoon shows, a character runs off a cliff, realizes his predicament, and lets out a scream. He continues to scream as he falls.
 
  If the physical situation is portrayed correctly, from the vantage point of an observer at the top of the cliff leaning over the edge, the pitch of the scream as he falls should be
  A) lower than the original pitch and constant.
  B) higher than the original pitch and increasing as he falls.
  C) higher than the original pitch and constant.
  D) lower than the original pitch and decreasing as he falls.
  E) It is impossible to predict.

Question 2

An aluminum wire and a steel wire, each of length 2.0 m, are hung from the ceiling. A 5.0-kg mass is suspended from the lower end of each wire. The aluminum wire has a diameter of 2.2 mm.
 
  What must be the diameter of the steel wire if it is to stretch the same distance as the aluminum wire, so that the two wires maintain equal lengths after the masses are attached? Young's modulus for aluminum is 0.70  1011 Pa and for steel it is 2.0  1011 Pa.


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amcvicar

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Destiiny22

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Reply 2 on: Jul 29, 2018
:D TYSM


triiciiaa

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

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