A pendulum is released from an elevation of (1.15 mathrm{~m}) and allowed to swing in a room

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A pendulum is released from an elevation of \(1.15 \mathrm{~m}\) and allowed to swing in a room filled with \(1.50 \times 10^{21}\) nitrogen molecules having an average speed of \(550 \mathrm{~m} / \mathrm{s}\). If the energy of the pendulum is equal to the energy distributed over all the nitrogen molecules, what is the pendulum's mass? The mass of a nitrogen molecule \(\left(\mathrm{N}_{2}\right)\) is \(4.65 \times 10^{-26} \mathrm{~kg}\).

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