346. assignment (radio antennas interference)

Two radio antennas separated by d = 294 m as shown in the figure below simultaneously broadcast identical signals at the same wavelength. A car travels due north along a straight line at position x = 1 040 m from the center point between the antennas, and its radio receives the signals. Note: Do not use the small-angle approximation in this problem

a. If the car is at the position of the second maximum after that at point O when it has traveled a distance y = 400 m northward, what is the wavelength of the signals?

 

i got the correct answer 52.37m

 

b. How much farther must the car travel from this position to encounter the next minimum in reception?

 

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