An old mining tunnel disappears into a hillside

Reference no: EM13664027

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. but, you gure out a way: using your subsonic applier and loudspeaker, you in resonances at 4.5 Hz and 6.3 Hz, and at no frequencies in among these. It's rather chilly inside the tunnel, so you estimate the sound speed to be 335 m/s. What's the result of your measurement?

Reference no: EM13664027

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