A source of sound is placed at one end of an iron bar 2 km long. Two sounds are heard at the other end at an interval of 5.6s. If the velocity of sound in air is `330m//s`, find the velocity of sound in iron.

Explanation

To find the velocity of sound in iron, we can follow these steps:

### Step 1: Understand the Problem
We have a sound source at one end of a 2 km long iron bar. Two sounds are heard at the other end with an interval of 5.6 seconds. We know the velocity of sound in air is 330 m/s.

### Step 2: Convert the Length of the Iron Bar
Convert the length of the iron bar from kilometers to meters:
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