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Author Question: Two single wave pulses are sent along a rope. Both have the same height, but one is upward and the ... (Read 27 times)

craiczarry

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on: Jul 29, 2018
Two single wave pulses are sent along a rope. Both have the same height, but one is upward and the other is downward. As they are passing through each other, they will momentarily cancel each other out.
 
  What becomes of their energy as they are passing through each other?
  A) It is still there in the form of kinetic energy of the rope.
  B) It is momentarily destroyed due to destructive interference.
  C) It is still there in the form of thermal energy of the rope and air.
  D) It is still there in the form of gravitational energy of the rope.
  E) Actually the pulses contained no energy to begin with.

Question 2

A 55-kg box rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.30. A horizontal 140-N force is applied to the box. What is the friction force on the box?
 
  A) 140 N B) 42 N C) 16.5 N D) 160 N E) 0.00 N
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lindahyatt42

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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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craiczarry

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Reply 2 on: Jul 29, 2018
Excellent

sailorcrescent

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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