The intensity of the sunlight that reaches Earth's upper atmosphere is approximately 1400 W/m2. (a) What is the average energy density? J/m3 (b) Find the rms values of the electric field and magnetic field. Erms = V/m Brms = T
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The intensity \( I \) of an electromagnetic wave is related to the energy density \( u \) by the equation: \[ I = c \cdot u \] where \( c \) is the speed of light in a vacuum, approximately \( 3 \times 10^8 \, \text{m/s} \). Show more…
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