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
1 answer
23.5 + 9.2 = 32.7 k Hz = 32700 Hz
2 answers