Question: A teacher stands well back from an outside doorway 0.88m wide, and blows a whistle of frequency 750Hz. Ignoring reflections, estimate at what angle(s) it

A teacher stands well back from an outside doorway 0.88m wide, and blows a whistle of frequency 750Hz. Ignoring reflections, estimate at what angle(s) it is not possible to hear the whistle clearly on the playground outside the doorway?

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The wavelength of the sound is v 343ms f 0457 m 750 Hz We fi... View full answer

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