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kirza4 [7]
3 years ago
12

Why is earth a magnet?

Physics
1 answer:
oksian1 [2.3K]3 years ago
7 0
I hope this helps. it was right when i took the test.

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HELP BRAINLYEST TO CORRECT ANSWER
kow [346]

Answer:

physical

Explanation:

how thick something is is a physical trait, so it's a physical property!

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3 years ago
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The speed of a certain electron is 995 km s−1 . If the uncertainty in its momentum is to be reduced to 0.0010 per cent, what unc
Tpy6a [65]

Answer:

The uncertainty in the location that must be tolerated is 1.163 * 10^{-5} m

Explanation:

From the uncertainty Principle,

Δ_{y} Δ_{p} = \frac{h}{2\pi }

The momentum P_{y} = (mass of electron)(speed of electron)

                                = (9.109 * 10^{-31}kg)(995 * 10^{3} m/s)

                                = 9.0638 * 10^{-25}kgm/s

If the uncertainty is reduced to a 0.0010%, then momentum

                              = 9.068 * 10^{-30}kgm/s

Thus the uncertainty in the position would be:

                              Δ_{y} = \frac{h}{2\pi } * \frac{1}{9.068 * 10^{-30} }

                              Δ_{y} \geq  1.163 * 10^{-5}m

5 0
4 years ago
Sort each item to the correct location,
Hitman42 [59]

Answer:

the orbits of the planets are elliptical

the sun is the center of the solar system

includes 9 planets

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3 years ago
List the steps you would use to reach one of your personal growth goals.
Zinaida [17]
Im not sure, but here are a few of mine : Learn to be silent, and listen, take massive action and be proactive, listen, focus, and lastly, persist. Hope this helped! (:
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3 years ago
The change of motion of a body is proportional to the applied force, and it takes place in the direction of a straight line in w
7nadin3 [17]

Answer:

Newton's Second Law of Motion  

Explanation:

According to Newton's second law of motion, the change in velocity of a body is directly proportional to the force applied on it. Velocity is a vector quantity. It measures the magnitude of the speed as well as its direction.

F = m a

where, F is the applied force, m is the mass and a is the acceleration.

It can also be expressed as:

F = \frac{dp}{dt}

where, p = mv ( momentum)

4 0
3 years ago
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