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Home Q & A Board Science-Related Homework Help Physics
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mikael mikael
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9 years ago
Two radio antennas are  150 m apart on a north-south line. The two antennas radiate in phase at a frequency of  3.5 MHz. All radio measurements are made far from the antennas. The smallest angle, reckoned east of north from the antennas, at which constructive interference of two radio waves occurs, is closest to: 
A) 55° 
B) 61° 
C) 50° 
D) 44° 
E) 39° 
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padrepadre
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