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At a particular place on the surface of the Earth, the Earth's magnetic field has magnitude of 5.40 105T, and there is also a 149 V/m electric field perpendicular to the Earth's surface
(a) Compute the energy density of the electric field. (Give your answer in nl/m².)
nl/m3
(b) Compute the energy density of the magnetic field. (Give your answer in /m³.)
w/m³

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