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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