**(a)**

Wavelength:

$\overline{){\mathbf{\lambda}}{\mathbf{=}}\frac{\mathbf{2}\mathbf{\pi}}{\mathbf{k}}}$

Substituting:

λ = (2)(π)/(1.14 × 10^{7}) = 5.51 × 10^{-7}m

The wave's wavelength is 5.51 × 10^{-7}m.

The magnetic field of an electromagnetic wave in a vacuum is B_{z} = (2.4 µT)sin((1.14×10^{7})x - ? t), where x is in m and t is in s.

(a) What is the wave's wavelength?

(b) What is the wave's frequency?

(c) What is the wave's electric field amplitude?

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