A ship transmits ultrasonic signal waves to detect an iceberg floating at a distance of 3.6 km. The waves strike the iceberg, are reflected back, and are detected by the detector installed in the ship. The speed of ultrasonic waves is 1470 m s?1.What is the time delay between the transmission and the reception of the ultrasonic waves?

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Solution

$D e a r s t u d e n t, S p e e d = \frac{d i s t a n c e}{t i m e} 1470 = \frac{2 \times 3.6 \times 1000}{t i m e} t i m e = \frac{2 \times 3.6 \times 1000}{1470} = 4.89 s R e g a r d s$

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Dear student,Speed=distancetime1470=2×3.6×1000timetime=2×3.6×10001470=4.89sRegards

$D e a r s t u d e n t, S p e e d = \frac{d i s t a n c e}{t i m e} 1470 = \frac{2 \times 3.6 \times 1000}{t i m e} t i m e = \frac{2 \times 3.6 \times 1000}{1470} = 4.89 s R e g a r d s$