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Author Question: A string fixed at both ends is vibrating in one of its harmonics. If we now increase only the ... (Read 71 times)

rosent76

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A string fixed at both ends is vibrating in one of its harmonics. If we now increase only the frequency at which the string is vibrating, which of the following characteristics do we also increase? (There could be more than one correct choice.)
 
  A) the speed of the traveling waves on the string
  B) the period of the traveling waves on the string
  C) the wavelength of the traveling waves on the string
  D) the amplitude of the traveling waves on the string
  E) none of the above

Question 2

A girl of mass 55 kg throws a ball of mass 0.80 kg against a wall. The ball strikes the wall horizontally with a speed of and it bounces back with this same speed.
 
  The ball is in contact with the wall What is the magnitude of the average force exerted on the wall by the ball? A) 800 N
  B) 400 N
  C) 55,000 N
  D) 27,500 N
  E) 13,750 N


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Edwyer

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rosent76

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Reply 2 on: Jul 29, 2018
Thanks for the timely response, appreciate it


softEldritch

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Reply 3 on: Yesterday
Wow, this really help

 

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