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Lemur [1.5K]
3 years ago
6

Rounded to the nearest whole number, how many protons are in an atom of krypton?

Physics
2 answers:
Andre45 [30]3 years ago
7 0

the answer is definitely 36, i took the course

Semenov [28]3 years ago
5 0
The answer is 36 protons
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8:21am

Explanation:

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Communities of organisms coexist in organized, balanced _____?
poizon [28]

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3 years ago
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A bus contains a 1440 kg flywheel (a disk that has a 0.63 m radius) and has a total mass of 10200 kg. Calculate the angular velo
CaHeK987 [17]

Answer:\omega =93.51 rad/s

Explanation:

Given

mass of Flywheel m_1=1440 kg

mass of bus m_b=10200 kg

radius of Flywheel r=0.63 m

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Conserving Energy i.e.

0.9(Rotational Energy of Flywheel)= change in Kinetic Energy of bus

Let \omegabe the angular velocity of Flywheel

0.9\cdot \frac{I\omega ^2}{2}=\frac{m_bv^2}{2}

I=moment\ of\ Inertia =mr^2=1440\cdot 0.63^2=571.536 kg-m^2

0.9\cdot \frac{571.536\cdot \omega ^2}{2}=\frac{10200\cdot 21^2}{2}

\omega ^2=21^2\times \frac{10200}{0.9\times 571.536}

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