Thank u guys! Please show the final answer :) (a) Compute the energy density of

Question

Thank u guys! Please show the final answer :)

(a) Compute the energy density of the electric field.
  

(b) Compute the energy density of the magnetic field.

Thank u guys! Please show the final answer :) On a clear day at a certain location, a 146-V/m vertical electric field exists near the Earth's surface. At the same place, the Earth's magnetic field has a magnitude of 4.600 10^-5 T. (a) Compute the energy density of the electric field. (b) Compute the energy density of the magnetic field. muJ/m^3

Explanation / Answer

a. eenry density u = 0.5 eo E^2

u = 0.5 * 8.85 * e-12 * 146*146

u = 9.43 *10^-8 J m^3

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eenry densirty =   B^2/2uo

u = 4.6*4.6 e -10/( 2*4pi e-7)

u = 0.842 mJ/m^3

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