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The electric in an electromagetic wave i...

The electric in an electromagetic wave is given by E=(100 N/C)`sinomega(t-(X)/(C ))`.
If the energy contained in a cylinder of coss-section `10 cm^(2)` and length 50 cm along the X-axis is `4.4xx10^(-8)J//m^(3)`, then find intensity of the wave.

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