hw10solns - Physics 273 Homework #10 1. A particle of...

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Unformatted text preview: Physics 273 Homework #10 1. A particle of charge Q oscillates sinusoidally with frequency in the x-direction according to ) sin( ) ( t X t x . We will study the resulting electromagnetic fields at a distance y perpendicular to the motion, with y >> X 0 . The static radial electric field at ( x =0, y ) is 2 4 y Q E near . The current-induced magnetic field (out of the page) at ( x =0, y ) is 2 4 ) ( y t x Q B near , where ) ( t x is the velocity of the oscillating charge. (a) Write down the amplitude of the Poynting vector at ( x =0, y ) associated with the near- field electromagnetic fields E near and B near . (b) Now write down the radiated electric and magnetic fields at position ( x =0, y ) associated with the acceleration of the charge. (c) Write down the amplitude of the Poynting vector at ( x =0, y ) from the radiation fields derived in (b)....
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hw10solns - Physics 273 Homework #10 1. A particle of...

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