Calculating Energy Transported by an EM Wave with a 36.5 mV/m E Field

[Queue]

Homework Statement

How much energy is transported across a 1.15 cm² area per hour by an EM wave whose E field has an rms strength of 36.5 mV/m?

Homework Equations

u (energy per unit volume) = \epsilon_0 E^2 \frac{J}{m^3}

The Attempt at a Solution

Since I have u = 8.85*10^-12*(36.5*10^-3)² J/(m^3). I multiply this by the given area (1.15 cm²) which gave me units of J/m. The only other thing that seems to make any sense that would get me to J/h would be to multiply by the speed of light in meters per hour.

 

[lanedance]

Hi Queue, that sounds reasonable to me - multiplying by the speed of light gives the power crossing the surface area. Transferring the speed to m/hr is equivalent to finding the power transfer in J/s, using m/s, then multiplying by 3600s to find the total energy trasnferred in an hour