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Author Question: At what distance from the central axis of a long straight thin wire carrying a current of 5.0 A ... (Read 71 times)

stock

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on: Jul 29, 2018
At what distance from the central axis of a long straight thin wire carrying a current of 5.0
 
  A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic field of about 5.0  10-5 T? (0 = 4  10-7 T  m/A)
  A) 1.0 cm
  B) 2.0 cm
  C) 3.0 cm
  D) 4.0 cm
  E) 5.0 cm

Question 2

An American football field, including end zones, is 360 feet long and 160 feet wide. If you needed to describe it for someone in Europe using the metric system,
 
  which one of the following quantities would be closest to its area in square meters? (2.54 cm = 1.00 in.)
  A) 4,920 m2
  B) 5,350 m2
  C) 88.0 m2
  D) 12,100 m2
  E) 13,200 m2


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sultansheikh

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

B

Answer to Question 2

B


stock

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


sultansheikh

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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