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Tanya [424]
3 years ago
11

A group of hikers hear an echo 2.6 s after they shout. The temperature is 20 ◦C. How far away is the mountain that reflected the

sound wave? At this altitude, the speed of sound in air at 273 K is 328 m/s. Answer in units of m.
Physics
1 answer:
Vadim26 [7]3 years ago
4 0

Answer:

x = 445.9\,m

Explanation:

The velocity of sound in air at 20 °C is 343 meters per second. The distance of mountain can be derived by the following expression:

2\cdot x = v_{air}\cdot \Delta t

x = \frac{v_{air}\cdot \Delta t}{2}

x = \frac{(343\,\frac{m}{s} )\cdot (2.6\,s)}{2}

x = 445.9\,m

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