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Author Question: Charge Q1 = 6.0 nC is at (0.30 m, 0), charge Q2 = -1.0 nC is at (0, 0.10 m), and charge Q3 = 5.0 nC ... (Read 79 times)

bcretired

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on: Jul 29, 2018
Charge Q1 = 6.0 nC is at (0.30 m, 0), charge Q2 = -1.0 nC is at (0, 0.10 m), and charge Q3 = 5.0 nC is at (0, 0).
 
  What are the magnitude and direction of the net electrostatic force on the 5.0-nC charge due to the other charges? (k = 1/40 = 8.99  109 N  m2/C2)

Question 2

A thin copper rod that is 1.0 m long and has a mass of 0.050 kg is in a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to cancel the weight of the rod?
 
  A) 1.2 A B) 7.6 A C) 2.5 A D) 4.9 A E) 9.8 A


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Toya9913

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

5.4  10-6 N, 56 above -x-axis

Answer to Question 2

D


bcretired

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Reply #2 on: Jul 29, 2018
Thank you!


Toya9913

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Reply #3 on: Jul 29, 2018
Always glad to help...


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