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Author Question: Two long parallel wires that are 0.30 m apart carry currents of 5.0 A and 8.0 A in the opposite ... (Read 44 times)

kellyjaisingh

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on: Jul 29, 2018
Two long parallel wires that are 0.30 m apart carry currents of 5.0 A and 8.0 A in the opposite direction.
 
  Find the magnitude of the force per unit length that each wire exerts on the other wire and indicate if the force is attractive or repulsive. (0 = 4  10-7 T  m/A)
  A) 7.2  10-5 N attractive
  B) 2.7  10-5 N repulsive
  C) 3.4  10-5 N attractive
  D) 2.7  10-5 N attractive
  E) 7.2  10-5 N repulsive

Question 2

The following items are positioned in sequence: A source of a beam of natural light of intensity I0, three ideal polarizers A, B, and C; and an observer.
 
  Polarizer axis angles are measured clockwise from the vertical, as viewed by the observer. The axis angle of polarizer A is set at 0 (vertical), and the axis angle of polarizer C is set at 50. The axis angle of polarizer B is set at 120. What is ratio of the intensity of the beam at the observer to the intensity I0 of the source?
  A) 0.015
  B) 0.020
  C) 0.025
  D) 0.030
  E) 0.035
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amcvicar

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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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kellyjaisingh

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

xiazhe

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Reply 3 on: Yesterday
Excellent

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