Atomic Vibration Speed · PhysicsBowl 2023 #26

Physics · mechanics

Problem

Atoms in a solid are not stationary. They vibrate about their equilibrium positions. Typically, the frequency of vibration is about 2.0 × 10¹² Hz, and the amplitude is about 1.1 × 10⁻¹¹ m. For a typical atom, what is its maximum speed? a. 108 m/s b. 10.8 m/s c. 128 m/s d. 12.8 m/s e. 138 m/s

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