Anonymous
Anonymous asked in Science & MathematicsPhysics · 10 years ago

Finding amplitude/magnitude...plz help ASAP Thanks.. The magnetic field in a radio wave traveling through air?

The magnetic field in a radio wave traveling through air has amplitude 1.5x10^-11 T and frequency 4.8 MHz.

(a) Find the amplitude and frequency of the electric field.

amplitude: answer in mV/m

(b) The wave is traveling in the −y direction. At y = 0 and t = 0, the magnetic field is 1.0 10-11 T in the +z-direction. What are the magnitude and direction of the electric field at y = 0 and t = 0? magnitude: answer in mV/m

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  • 10 years ago
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    A. E = Bc = 4.5E-3 V/m

    f = 4.8 MHz

    B. E = Bc = 3E-3 V/m. E is rotated 90 deg CCW from B when viewed in the direction of propagation (ref.). So E is in the +x direction..

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