Question

the speed of sound in air is about 330 m/sec. Express this speed in km/hr. How long will the sound take to travel 99 km​

Answer 1

Step-by-step explanation:

Speed of sound = 330m/sec

= (330/1000) ÷ (1/3600)km/hr

= 33/100 × 3600 km/hr

= 33 × 36 km/hr

= 1188 km/hr

Distance = 99km

Speed = 1188 km/hr

Time = Distance/Speed

= 99/1188 hours

= 1/12 hour

= 1/12 × 3600 sec

= 300 seconds

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