To apply problem-solving strategy 23.1 Electromagnetic waves. An electromagnetic

Question

To apply problem-solving strategy 23.1 Electromagnetic waves. An electromagnetic wave of wavelength 435 nm is traveling in vacuum in the -z direction. The electric field has an amplitude of 2.70 times 10^-3 V/m and is parallel to the x axis. What are the frequency and the magnetic field amplitude of this wave? What is the frequency f of this wave? Express your answer in hertz to three significant figures. f = 6.90 times 10-^14 Hz What is the magnetic-field amplitude B_max of the wave? Express your answer in teslas to three significant figures. B_max = 9 middot 10^-11

Explanation / Answer

Em = v Bm

Bmax = Emax / v

for EM wave, v = c = 3 x 10^8 m/s

Bmax = (2.70 x 10^-3 V/m) / (3 x 10^8 m/s)

= 9 x 10^-12 T

There is no question in E.

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