A tuning fork whose natural frequency is `440 H_(Z)` is placed just above the open end of a tube that contains water. The water is slowly drained from the tube while the tuning fork remains in place and is kapt vibrating. The sound is found to be echanced when the air column is `60 cm` long and when it is `100 cm` long . Find the speed of sound in air.

Explanation

To find the speed of sound in air using the information provided, we can follow these steps:

### Step 1: Identify the resonant lengths
The problem states that resonance occurs at two lengths of the air column:
- First resonance at \( L_1 = 60 \, \text{cm} \)
- Second resonance at \( L_2 = 100 \, \text{cm} \)

### Step 2: Calculate the change in length
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