Problem: The y component of the electric field of an electromagnetic wave travelling in the +x direction through vacuum obeys the equation Ey = (375 N/C) cos [kx − (2.20 × 10 14 rad/s)t]. What is the wavelength of this electromagnetic wave? a. 0.272 μm b. 1.36 μm c. 2.72 μm d. 8.57 μm e. 17.1 μm

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The y component of the electric field of an electromagnetic wave travelling in the +x direction through vacuum obeys the equation Ey = (375 N/C) cos [kx − (2.20 × 10 14 rad/s)t]. What is the wavelength of this electromagnetic wave?

a. 0.272 μm

b. 1.36 μm

c. 2.72 μm

d. 8.57 μm

e. 17.1 μm