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Thepotemich [5.8K]
3 years ago
8

An airplane is accelerating forward due to a force of 3320 newtons acting

Physics
1 answer:
Darya [45]3 years ago
5 0

Two opposite forces generate a force whose magnitude is the difference of the two magnitudes, and whose direction is the same of the strongest one.

We have 3320 newtons forward, and 550 backwards.

So, the net force is forward, and has magnitude 3320-550=2770

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What accepted idea was replaced by copernicus's new approach to the solar system?
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Answer:

The geocentric model of Ptolemy in which the sun and other planets were believed to move round the Earth.

Explanation:

The Copernicus heliocentric model of the solar system was put forward by  Nicolaus Copernicus and was published in 1543. The model proposed by Copernicus puts the Sun near the center of the Universe, motionless, with Earth and the other planets orbiting around the sun in circular paths, modified by epicycles, and at uniform speed. This is contrary to Ptolemy's geocentric solar system that puts the Earth at the center of the solar system, in which the sun and other planets were believed to move round the Earth.

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icang [17]

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Explanation:

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4 years ago
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4 years ago
A stone is dropped from a bridge 45 meters above the surface river. It takes the stone 4.6 seconds to reach the water surface. F
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Average velocity = (displacement) / (time for the displacement)

Displacement =
        Straight path from the start point to the finish point  =  45 meters down .
Time = 4.6 seconds

Average velocity  =  45/4.6 = <em>9.783 meters/second down</em>

==================================

In the real world, a dropped stone would only take  3.03  seconds
to fall 45 meters.

Alternatively, a stone that fell for  4.6 seconds from rest would fall
103.7 meters, with an average velocity of  22.5 meters/second down.

But we accepted the given information, and did the best we could do
with it.
7 0
3 years ago
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