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## Homework Statement

A window, 1.0m by 1.0m receives 27J of energy, from sunlight, in one minute. What is the Rms magnetic field of the light striking the window.

## Homework Equations

E = cB

I = (ErmsBrms) / μo

## The Attempt at a Solution

Not sure if those equations are right when solving this problem and cant find a problem similiar to it....completely stuck. Do I use Poynting's vector?