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Marina86 [1]
3 years ago
9

Which of the following planets orbits the fastest around the sun?

Physics
2 answers:
Lana71 [14]3 years ago
4 0

Answer:the one which is closest to the sun

Explanation:

coldgirl [10]3 years ago
3 0

Answer:

Mercury orbits the fastest around the Sun.

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Answer:

<em>His angular velocity will increase.</em>

Explanation:

According to the conservation of rotational momentum, the initial angular momentum of a system must be equal to the final angular momentum of the system.

The angular momentum of a system = I'ω'

where

I' is the initial rotational inertia

ω' is the initial angular velocity

the rotational inertia = mr'^{2}

where m is the mass of the system

and r' is the initial radius of rotation

Note that the professor does not change his position about the axis of rotation, so we are working relative to the dumbbells.

we can see that with the mass of the dumbbells remaining constant, if we reduce the radius of rotation of the dumbbells to r, the rotational inertia will reduce to I.

From

I'ω' = Iω

since I is now reduced, ω will be greater than ω'

therefore, the angular velocity increases.

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