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Gannon
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Homework Statement
An industrial laser is used to burn a hole through a piece of metal. The average density of the light is S = 1.24E9 W/m2. What is the rms value of each of the following fields in the electromagnetic wave emitted by the laser?
Homework Equations
S = ceoE2
S = (c/uo)B2
E=cB
S is average density and E,B are rms values.
The Attempt at a Solution
Solving for E:
sqrt(S/ceo) = E
sqrt(1.24E9/(3e8 x 8.85E-12)) = E = 683405.7 N/C
Solving for B:
E = cB
E/C = B
4.67E11/3E8 = .00228T
I have 5 tries to get this homework right and I'm down to my last one. I want to make sure I'm not leaving anything out this time. Any help is appreciated!