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Author Question: A stunt motorcyclist rides his motorcycle over a short ramp so that the motorcycle loses contact ... (Read 224 times)

Kikoku

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on: Jul 29, 2018
A stunt motorcyclist rides his motorcycle over a short ramp so that the motorcycle loses contact with the ground. As he does this, he guns his engine and the motorcycle's front wheel is observed to rise. Explain.
 
  What will be an ideal response?

Question 2

The radius of the Sun is 6.95  108 m. It radiates heat at the rate of 5.42  1026 W. Assuming that it is a perfect emitter, what is the temperature of the surface of the Sun? The Stefan-Boltzmann constant is 5.67  10-8 W/(m2K4).
 
  A)
 
  6.30  103 K
 
  B)
 
  8.25  103 K
 
  C)
 
  8.87  103 K
 
  D)
 
  3.93  107 K
 
  E)
 
  5.78  107 K


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nhea

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

There is no external torque on the system, so the angular momentum is conserved. If the motorcycle is traveling from left to right, the increased clockwise angular momentum of the drive wheel requires a compensating counterclockwise angular momentum for the body of the motorcycle, thus raising the front end.

Answer to Question 2

A


Kikoku

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Reply 2 on: Jul 29, 2018
:D TYSM

nathang24

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Reply 3 on: Yesterday
Wow, this really help

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