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Posted by on Monday, April 23, 2012 at 1:14pm.

A certain dog whistle operates at 23.5 kHz, while another (brand X) operates at an unknown frequency. If neither whistle can be heard by humans when played separately, but a shrill whine of frequency 9200 Hz occurs when they are played simultaneously, estimate the operating frequency of brand X.

____Hz

  • Physics - , Monday, April 23, 2012 at 1:20pm

    23.5 + 9.2 = 32.7 k Hz = 32700 Hz

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