The reading on a metronome indicates the number of oscillations per

minute. What are the frequency and period of the metronome’s vibration
when the metronome is set at 180?

The frequency of the metronome's vibration when set at 180 oscillations per minute would be 180 Hz (oscillations per second).

To find the period of the vibration, we can use the formula

Period = 1 / Frequency

Period = 1 / 180 Hz = 0.00556 seconds

Therefore, the period of the metronome's vibration when set at 180 would be 0.00556 seconds.