A tuning fork and a siren produce 18 beats in 3 seconds. The siren has 16 holes and is making 960 revolutions per minute. If the velocity of the siren is reduced, the two notes will be in unison. Find the pitch of the tuning fork.

Explanation

To find the pitch of the tuning fork, we can follow these steps:

### Step 1: Calculate the Beat Frequency
The problem states that a tuning fork and a siren produce 18 beats in 3 seconds. To find the beat frequency in hertz (Hz), we divide the total number of beats by the time in seconds:

\[ \text{Beat Frequency} = \frac{18 \text{ beats}}{3 \text{ seconds}} = 6 \text{ beats per second (Hz)} \]
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