Question

answer my question fast​

Answer 1

Solution :-

Points to consider :-

♦ Velocity of wave = wavelenght × frequency

Here

• wavelength is in meters

• frequency is in Hertz

Now :-

Velocity of sound wave

= 3000 Hz × 0.15 m

= 450 m/s

Now time taken to travel

• Distance = 2km

• Velocity = 450 m/s

• Time = Distance ÷ Velocity

= 2000 m ÷ 450 m/s

= 4.4445 sec