Physics, 05.10.2020 16:01, mayamabjishovrvq9

In a Harry Potter movie, there is a big pendulum in the Great Hall that
goes back and forth once every
18.9 s. What is the length of the
pendulum (if it obeys Physics
instead of magic)?

Answers: 2

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In a Harry Potter movie, there is a big pendulum in the Great Hall that
goes back and forth o...