In Fig. 35-38, sources A and B emit long-range radio waves
Chapter , Problem 23(choose chapter or problem)
In Fig. 35-38, 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 rA from A to detector D is greater than the corresponding distance rB by 100 m. What is the phase difference of the waves at D
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