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nata0808 [166]
3 years ago
10

The use of sound waves helps scientists find out how deep parts of the ocean are. The scientists do this by sending a sound wave

to the floor of the ocean and recording the time it takes to return to a machine. What did the inventor of this machine need to know while developing the machine?
Physics
1 answer:
Scilla [17]3 years ago
4 0
Dredging is what the inventor of this machine need to know while developing the machine.
Hope this helps!
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Two identical blocks, A and B, are on a horizontal surface, as shown above. There is negligible friction between the surface and
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Answer:

  the speed of the center of mass stays the same

Explanation:

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Kinetic friction acts on a baseball player sliding into first base. Will the player's velocity change?
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Explanation:

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4 years ago
Is is false or true The closer objects are, the stronger the gravitational force between them.
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Answer:

<em>TRUE</em>

Explanation:

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5 0
3 years ago
A heavy ball with a weight of 150 N is hung from the ceiling of a lecture hall on a 4.1-m-long rope. The ball is pulled to one s
AlladinOne [14]

Answer:

The tension in the rope is 262.88 N

Explanation:

Given:

Weight W = 150 N

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For finding the tension in the rope,

First find the mass of rod,

mg = 150                          ( g = 9.8 \frac{m}{s^{2} } )

  m = \frac{150}{9.8}

  m = 15.3 kg

Tension in the rope is,

  T = mg + \frac{mv^{2} }{r}

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  T = 262.88 N

Therefore, the tension in the rope is 262.88 N

7 0
3 years ago
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