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saveliy_v [14]
3 years ago
6

Why dont galaxies fly apart?

Physics
1 answer:
lakkis [162]3 years ago
8 0
Hey you!

No one really knows why galaxies don't fly apart. Blackholes do, very strongly, have a gravitational pull on them, but that isn't enough to keep billions of stars and planets and other space matter in orbit around them. Although, the stars and gases are held together by the gravity of dark matter, so, you could say that explains why.

I Hope You Found This Helpful! :*)
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tigry1 [53]
1.Light-collecting area
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Web Spiders and Oscillations All spiders have special organs that make them exquisitely sensitive to vibrations. Web spiders det
chubhunter [2.5K]

Complete Question

The complete quetion is shown on the first uploaded image

Answer:

Explanation:

From the question we are told that

       The mass of the fly is  m_f =  11 mg =  11*10^{-3} g =  1.1*10^{-5} \ kg

        The extension of the web is  e=  4.00 \ mm = 0.004 \ m

       

The spring constant is mathematically evaluated as

          k = \frac{mg}{e}

substituting values

        k = \frac{1.1 *10^{-5} *9.8}{0.004}

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The frequency of vibration is

         f =  \frac{1}{2 \pi} \sqrt{\frac{k}{m} }

substituting values

       f =  \frac{1}{2 * 3.142 } \sqrt{\frac{0.027}{1.1*10^{-5}} }

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8 0
3 years ago
Write your opinion about achievement made by during rana rule​
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Answer:

Your opinion about achievement made by during rana rule

Explanation:

April Fools !

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A certain lightning bolt moves 10.0 C of charge. How many charges have been moved if the fundamental unit of charge is 1.6 x 10-
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To solve this problem, use the ratio given by the total number of electrons or protons that exist as a function of the total charge, and inversely proportional to the value of the fundamental charge. The number of fundamental unit  |q_e| that constitutes a charge of 40.0C can be calculated as

N = \frac{|Q|}{|q_e|}

Here,

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Therefore the number of fundamental charge units moved by lightning bolt is 6.25*10^{19}

8 0
3 years ago
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