The magnetic field in a plane electromagnetic wave is given by `B_(y) = 2xx10^7 T sin (0.5xx10^3x+1.5xx10^11 t) T`
(a) What is the wavelength and frequency of the wave?
(b) Write an expression for the eletric field.

Explanation

To solve the problem step by step, we will break it down into two parts: (a) finding the wavelength and frequency of the wave, and (b) writing an expression for the electric field.

### Part (a): Finding Wavelength and Frequency

1. **Identify the given magnetic field equation**:
\[ B_y = 2 \times 10^{-7} \, \text{T} \sin(0.5 \times 10^3 x + 1.5 \times 10^{11} t) \]
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