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Alex73 [517]
3 years ago
6

Name three possible end stages of a star​

Physics
1 answer:
Ahat [919]3 years ago
4 0
Black hole, neutron Star, or super nova
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Consider a model of a hydrogen atom in which an electron is in a circular orbit of radius r = 5.92×10−11 m around a stationary p
DaniilM [7]

Answer:

2.068 x 10^6 m / s

Explanation:

radius, r = 5.92 x 10^-11 m

mass of electron, m = 9.1 x 10^-31 kg

charge of electron, q = 1.6 x 10^-19 C

As the electron is revolving in a circular path, it experiences a centripetal force which is balanced by the electrostatic force between the electron and the nucleus.

centripetal force = \frac{mv^{2}}{r}

Electrostatic force = \frac{kq^{2}}{r^{2}}

where, k be the Coulombic constant, k = 9 x 10^9 Nm^2 / C^2

So, balancing both the forces we get

\frac{kq^{2}}{r^{2}}=\frac{mv^{2}}{r}

v=\sqrt{\frac{kq^{2}}{mr}}

v=\sqrt{\frac{9\times 10^{9}\times1.6\times 10^{-19}\times 1.6\times 10^{-19}}{9.1\times 10^{-31}\times 5.92\times10^{-11}}}

v = 2.068 x 10^6 m / s

Thus, the speed of the electron is give by  2.068 x 10^6 m / s.

6 0
3 years ago
The argument against your claim (what the other side would say if they disagreed with your claim.) is:
Vlad1618 [11]

Answer:

a counterclaim

Explanation:

authors purpose is what an author wrote somthing for

opinion is someones thoughts or "side" on a argument

an arguement is a battle of opinions if that makes sense

3 0
3 years ago
Removing an electron from a neutral atom will result in an atom that?
Alex73 [517]

Removing an electron from a neutral atom will result in an atom that is positive.

8 0
3 years ago
Read 2 more answers
What force holds the earth-moon system together?
Verdich [7]
Gravity holds the system together
7 0
3 years ago
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What happens to infrared radiation when it comes to contact wih a shiny suface
Ksivusya [100]

If a surface looks "shiny" to you, that's because it reflects all
or most of the visible light that hits it.  That doesn't always mean
that the same surface reflects other, non-visible wavelengths of
light.  Infrared radiation may also reflect off of it, and probably
does.  But you can't be sure just because it's visibly shiny.  

8 0
3 years ago
Read 2 more answers
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