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Author Question: Consider a car with its wheels rolling (not sliding) on the road. How fast must the auto move for ... (Read 47 times)

anshika

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on: Jul 27, 2018
Consider a car with its wheels rolling (not sliding) on the road. How fast must the auto move for some point on a wheel to reach the speed of sound? Explain.
 
  What will be an ideal response?

Question 2

Angular magnification of a magnifying glass is largest when the image is at
 
  A) the near point.
  B) the focal point.
  C) the pupil of the eye.
  D) infinity.
  E) the far point.


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katkat_flores

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Reply #1 on: Jul 27, 2018
Answer to Question 1

Half the speed of sound. The bottom of the wheel has zero linear speed, the middle has the car's speed, and the top of the wheel is moving at twice the axis speed.

Answer to Question 2

A


anshika

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Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


katkat_flores

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Reply #3 on: Jul 27, 2018
Great! Please up vote :D


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