Physics, 29.06.2021 05:20 carlinryan
When the bell in a clock tower rings with a sound of 474 Hz, a pigeon roosting in the belfry flies directly away from the bell. If the pigeon hears a frequency of 453Hz, what is its speed?
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In a classical model of the hydrogen atom, the electron moves around the proton in a circular orbit of radius 0.053 nm. what is the electron's orbital frequency? what is the effective current of the electron?
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When the bell in a clock tower rings with a sound of 474 Hz, a pigeon roosting in the belfry flies d...
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