Answer:
<u><em>Sirius</em></u>
Explanation:
<u><em>Sirius</em></u> is known s the most brightest star in the sky the second brightest star is <u><em>Canopus</em></u>
First of all we need to convert everything into SI units.
Let's start with the initial angular speed,

. Keeping in mind that


we have

And we should also convert the angle covered by the centrifuge:

This is the angle covered by the centrifuge before it stops, so its final angular speed is

.
To solve the problem we can use the equivalent of

of an uniformly accelerated motion but for a rotational motion. It will be

And by substituting the numbers, we can find the value of

, the angular acceleration:
This type of energy is called non mechanical energy so the answer is C
Answer:
a point representing the mean position of the matter in a body or system.
Explanation: