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    Physical Optics and Interference

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    Moe, Larry, and Curly sit in a line with a spacing of 1.00 m. Larry is d1 = 3.0 m in front of a pair of stereo speakers d2 = 0.800 m apart, as shown in Figure 28-33. The speakers produce a single-frequency tone, vibrating in phase with each other. What are the two lowest frequencies that allow Larry to hear a loud tone while Moe and Curly hear very little? (Take the speed of sound to be 343 m/s.)

    (a) lowest frequency

    (b) second lowest frequency

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    Hi. Can someone please show me how to do the following problem? The answers (according to the back of the book) are (a) 690 Hz and (b) 2100 Hz, but I can't figure out how they arrive at these answers. I can't figure out where L1 and L2 are (for the L2 - L1 equation). Thank you.

    Moe, Larry, and Curly sit in a line with a spacing of 1.00 m. Larry is d1 = 3.0 m in front of a pair of stereo speakers d2 = 0.800 m apart, as shown in Figure 28-33. The speakers produce a ...

    Solution Summary

    This solution is provided in 242 words in an attached document. A diagram is used to enhance understanding of the problem, and pythagorus is used to calculate distance and therefore frequency.

    $2.49

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