sabrinachandler1792 sabrinachandler1792

31-01-2024
Physics

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The electric field associated with an e.m. wave in vacuum is given by →E=40cos(kz−6×10⁸t)^i, where E,z and t in volt/m, meter and seconds respectively. The value of wave vector k is
A 6m⁻¹
B 3m⁻¹
C 2m⁻¹
D 0.5m⁻¹

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