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
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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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