For the electric field

PHYSICS · Subjective · A Level · Physics · Waves · Waves

Problem

For the electric field E(x,t)=3 V m−1 sin⁡(kx−ωt)E(x,t)=3\,\text{V m}^{-1}\,\sin (kx-\omega t), the values k=1.5×107 m−1k=1.5\times10^{7}\,\text{m}^{-1} and ω=4.5×1015 s−1\omega=4.5\times10^{15}\,\text{s}^{-1} are given. Determine whether this field can represent an electromagnetic wave in free space. If it can, calculate the speed of the wave.

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