College Physics 2056

An electromagnetic wave strikes a 3.00-cm2 section of wall perpendicularly. The rms value of the wave's magnetic field is determined to be 6.00 10-4 T. How long does it take for the wave to deliver 1000 J of energy to the wall?

  1. 4
asked by Tony
  1. Figured it out.
    E/SA=t

    1000/[(2.38e14*B^2)*(Area)]= t

    posted by Tony

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