n SI units, the electric field in an electromagnetic wave is described by Ey = 114 sin(1.20 × 107x – wt). (a) Find the amplitude of the corresponding magnetic field oscillations. 342E14 Check the relationship between the amplitudes of the electric and magnetic fields. You appear to be using c incorrectly. µT (b) Find the wavelength 2. 0.523 pm (c) Find the frequency f. 5.74 If you know the wavelength of a periodic wave, what other information do you need to find its frequency? Hz

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