Lecture-26Examples-04-17-08 - Lecture-26 Examples Example...

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1 Figure 35-39 Lecture-26 Examples Example Problem-1 HW26-3. (HRW 35-21) In Fig. 35-39 , sources A and B emit long-range radio waves of wavelength 400 m, with the phase of the emission from A ahead of that from source B by 90°. The distance r A from A to detector D is greater than the corresponding distance r B by 100 m. What is the phase difference of the waves at D? Solution: 21. Initially, source A leads source B by 90°, which is equivalent to 14 wavelength. However, source A also lags behind source B since r A is longer than r B by 100 m, which is 100 1 4 m 400m = wavelength. So the net phase difference between A and
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This note was uploaded on 04/21/2008 for the course PHYSIC 2 taught by Professor Kim during the Spring '08 term at Lehigh University .

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