Intext example problem IV — task. Science State Board, Class 9.

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A ship sends out ultrasound that returns from the seabed and is detected after $3.42$ $s$ . If the speed of ultrasound through sea water is $1531$ $m/s$ , what is the distance of the seabed from the ship?

The formula distance is

$2 d = v \times t$
$4d = v \times t$

By applying the known values,

The distance is

$m$

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6. Intext example problem IV

Exercise condition: