Physics, 27.11.2019 20:31, pikachu4111

An old mining tunnel disappears into a hillside. you would like to know how long the tunnel is, but it's too dangerous to go inside. recalling your recent physics class, you decide to try setting up standing-wave resonances inside the tunnel. using your subsonic amplifier and loudspeaker, you find resonances at 5.0 hz and 6.4 hz , and at no frequencies between these. it's rather chilly inside the tunnel, so you estimate the sound speed to be 331 m/s . based on your measurements, how far is it to the end of the tunnel?

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An old mining tunnel disappears into a hillside. you would like to know how long the tunnel is, but...