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Montano1993 [528]
3 years ago
11

how long will it take a sonar pulse that travels at the speed of 1,500m/s to return from a sunken ship that is at a depth of 3,7

50m?
Physics
2 answers:
Sergio [31]3 years ago
6 0

Answer: It will 5 seconds fir the wave to return

Explanation: Speed is expressed as v=d/t if we derive this to find t:

t=d/v =3750m/ 1500m/s = 2.5 s note it the time required for the wave to reach the sunken ship. So multiply it by 2 to to have the final time to reach back on the source which takes 5 s.

Alexus [3.1K]3 years ago
4 0

Answer:

Correct answer:   t = 5 seconds

Explanation:

Given: sonar pulse velocity v = 1,500 m/s and distance from sunken ship

d = 3,750 m

The sonar pulse must go twice the distance to the ship

2 d = v · t  =>  t = 2 d / v = 2 · 3,750 / 1,500 = 7,500 / 1,500 = 5 seconds

God is with you!!!

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Answer:

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Applying Biot-Savart law, we have,

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\vec{V} = \frac{\Gamma}{2R}\vec{A}

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3 years ago
Why do objects fall?
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A student slides her 80.0-kg desk across the level floor of her dormitory room a distance 5.00 m at constant speed. If the coeff
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Answer:

1568 J

Explanation:

From the question given above, the following data were obtained:

Mass (m) = 80 Kg

Distance (d) = 5 m

Coefficient of kinetic friction (μ) = 0.4

Workdone (Wd) =?

Next, we shall determine the normal reaction. This can be obtained as follow:

Mass (m) = 80 Kg

Acceleration due to gravity (g) = 9.8 m/s²

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Next, we shall determine force of friction. This can be obtained as follow:

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F = μN

F = 0.4 × 784

F = 313.6 N

Finally, we shall determine the work done. This can be obtained as follow:

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Thus, the workdone is 1568 J

8 0
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