A sonar echo takes 8.8 s to return from a shack. How far away is the shack?
Given speed of sound in sea-water = 1533 m/s

348 m

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5720 m

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6745 m

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13490 m

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Solution

The correct option is C 6745 m
Total distance cover $= 2 d$
Time involve $t = 8.8 s e c$
Velocity $V = 1533$
$D i s t a n c e = 2 d = V \times t$

$d = \frac{V \times t}{2} = \frac{1533 \times 8.8}{2} 6745.2$

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A sonar echo takes 8.8 s to return from a shack. How far away is the shack?Given speed of sound in sea-water = 1533 m/s

The correct option is C 6745 mTotal distance cover =2dTime involve t=8.8 secVelocity V=1533Distance=2d=V×t d=V×t2=1533×8.826745.2

A sonar echo takes 8.8 s to return from a shack. How far away is the shack?
Given speed of sound in sea-water = 1533 m/s

The correct option is C 6745 m
Total distance cover $= 2 d$
Time involve $t = 8.8 s e c$
Velocity $V = 1533$
$D i s t a n c e = 2 d = V \times t$

$d = \frac{V \times t}{2} = \frac{1533 \times 8.8}{2} 6745.2$