A worker lives at a distance of 1.32 km from the factory. If the speed of sound in air be ${330 m s}^{- 1}$ , how much time will the sound of factory siren take to reach the worker?

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Solution

Using the formula, $S = v t$ , the required time is $t = S / v = \frac{1.3 \times 1000}{330} = 3.94 s$

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A worker lives at a distance of 1.32 km from the factory. If the speed of sound in air be 330ms−1, how much time will the sound of factory siren take to reach the worker?

Using the formula, S=vt, the required time is t=S/v=1.3×1000330=3.94s

A worker lives at a distance of 1.32 km from the factory. If the speed of sound in air be ${330 m s}^{- 1}$ , how much time will the sound of factory siren take to reach the worker?

Using the formula, $S = v t$ , the required time is $t = S / v = \frac{1.3 \times 1000}{330} = 3.94 s$