An electromagnetic wave traveling in vacuum far away from its source has a magnetic field B(z, t) = – (8.25 × 10–9 T) ĵ sin[(1.38 × 104 rad/m) z + ω t)]. (a) Determine the frequency, angular frequency and wavelength of the wave. (b) Find the electric field (vector) as a function of position and time only. (c) The wave is aimed at a 10 cm × 10 cm square which absorbs the wave completely. How much energy is delivered to the square each hour?

An electromagnetic wave traveling in vacuum far away from its source has a magnetic field B(z, t) = – (8.25 × 10–9 T) ĵ sin[(1.38 × 104 rad/m) z + ω t)]. (a) Determine the frequency, angular frequency and wavelength of the wave. (b) Find the electric field (vector) as a function of position and time only. (c) The wave is aimed at a 10 cm × 10 cm square which absorbs the wave completely. How much energy is delivered to the square each hour?

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