A. Find the time for light emitted by the sun to reach the earth. The earth is a

Question

A. Find the time for light emitted by the sun to reach the earth. The earth is a distance of 1.50x10^11m from the sun B. The magnetic ratio in a radio has an amplitude of 3.50x10^-12 T and frequency of 150.7MHz. Find the amplitude and frequency for the electric field and tie wave. A. Find the time for light emitted by the sun to reach the earth. The earth is a distance of 1.50x10^11m from the sun B. The magnetic ratio in a radio has an amplitude of 3.50x10^-12 T and frequency of 150.7MHz. Find the amplitude and frequency for the electric field and tie wave. B. The magnetic ratio in a radio has an amplitude of 3.50x10^-12 T and frequency of 150.7MHz. Find the amplitude and frequency for the electric field and tie wave.

Explanation / Answer

part A :

apply from the definition of speed V = distance /time

here speed = speed of light = 3e8 m/s

so

time t = S/V

t = 1.5 e 11/3e8

t = 500 secs

t = 8.34 mins

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part B :

frequency remains same   = frequency of EF = 150.7 MHz

apply the relation between electric field and magnetic field as

E   = Bc

where c is speed of light = 3e 8 m/s

so

E = 3.5 e -12 * 3e 8

E   = 1.05 e -3 N/C

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