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Author Question: A 3.0-kg mass is located at (0.0 m, 8.0 m), and a 1.0-kg mass is located at (12 m, 0.0 m). You want ... (Read 80 times)

Cooldude101

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A 3.0-kg mass is located at (0.0 m, 8.0 m), and a 1.0-kg mass is located at (12 m, 0.0 m). You want to add a 4.0-kg mass so that the center of mass (or center of gravity) of the three-mass system will be at the origin.
 
  What should be the coordinates of the 4.0-kg mass? A) (-3.0 m, -6.0 m)
  B) (-12 m, -8.0 m)
  C) (3.0 m, 6.0 m)
  D) (-6.0 m, -3.0 m)

Question 2

A coil of 160 turns and area 0.20 m2 is placed with its axis parallel to a magnetic field of initial magnitude 0.40 T. The magnetic field changes uniformly from 0.40 T in the +x direction to 0.40 T in the -x direction in 2.0 s.
 
  If the resistance of the coil is 16 , at what rate is power generated in the coil?
  A) 20 W B) 25 W C) 15 W D) 5.0 W E) 10 W


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karlss

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Cooldude101

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Reply 2 on: Jul 29, 2018
Gracias!


tuate

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

 

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