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Lyrx [107]
3 years ago
5

PLZZZZ HELPPPPPP MEEEEEE!!!!!! ASAP!!! ILL GIVE 20 POINTS AND BRAINLIEST!!! :'(

Physics
1 answer:
leva [86]3 years ago
6 0

Answer:

I would choose A. and B

Explanation:

The parent and daughter elements are different and the number of atoms is not conserved.

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To solve this problem we will apply the concept of rotational kinetic energy. Once this energy is found we will proceed to find the time from the definition of the power, which indicates the change of energy over time. Let's start with the kinetic energy of the rotating flywheel is

E_r = \frac{1}{2} I\omega^2

Here

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Here we have that,

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Replacing the value of the moment of inertia for this object we have,

E_r = \frac{1}{2} (\frac{MR^2}{2})\omega^2

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The expression for average power is

P = \frac{E_r}{\Delta t}

\Delta t = \frac{E_r}{P}

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4 years ago
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Answer:

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Explanation:

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