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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 66 times)

rosent76

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on: Jul 29, 2018
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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Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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rosent76

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Reply 2 on: Jul 29, 2018
Gracias!

helenmarkerine

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Reply 3 on: Yesterday
Excellent

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