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Homework Help: Rate at which energy is delivered

  1. Apr 16, 2010 #1
    1. The problem statement, all variables and given/known data

    A conducting rod of length l moves on two horizontal, frictionless rails. If a constant force of 2 N moves the bar at 2 m/s through a magnetic field B that is directed perpendicular to the system. What is the rate at which energy is delivered to the resistor?

    2. Relevant equations

    I'm not sure perhaps (time derivative) Energy = Power?

    3. The attempt at a solution

    I know how to find the power for this problem, but am not really for sure about what the rate at which energy is delivered means. I am thinking that means power, but another subpart of the question asked me what the mechanical power of the system was and I figure that those two will be the same value.

    Any help is appreciated.
     
  2. jcsd
  3. Apr 16, 2010 #2
    That's correct.
     
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