quiz_solutions10

Fundamentals of Physics, (Chapters 21- 44) (Volume 2)

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
PY212 Solutions Quiz 10 (a) The average rate of energy flow per unit area, or intensity, is related to the electric field amplitude E m by I E c m = 2 0 2 / μ , so V/m. 0476 . 0 ) W/m 10 3 )( m/s 10 00 . 3 )( H/m 10 4 ( 2 2 2 6 8 7 0 = × × × = = π cI E m (b) The amplitude of the magnetic field is given by T. 10 59 . 1 m/s 10 00 . 3 V/m 0476 . 0 10 8 × = × = = c E B m m (c) At a distance r
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: from the transmitter, the intensity is 2 / 2 , I P r = π where P is the power of the transmitter over the hemisphere having a surface area 2 2 r . Thus km. 25.2 m 10 52 . 2 ) W/m 10 3 ( 2 W 10 12 2 4 2 6 3 = × = × × = = − I P d...
View Full Document

Ask a homework question - tutors are online