Answer:
Most of the stars occupy the region in the diagram along the line called the main sequence. During the stage of their lives in which stars are found on the main sequence line, they are fusing hydrogen in their cores.
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Answer:
velocity changes over time.
The central force acting on the electron as it revolves in a circular orbit is
.
The given parameters;
- <em>speed of electron, v = 2.2 x 10⁶ m/s</em>
- <em>radius of the circle, r = 4.63 x 10⁻¹¹ m</em>
<em />
The central force acting on the electron as it revolves in a circular orbit is calculated as follows;
![F = \frac{M_e v^2}{r} \\\\](https://tex.z-dn.net/?f=F%20%3D%20%5Cfrac%7BM_e%20v%5E2%7D%7Br%7D%20%5C%5C%5C%5C)
where;
is mass of electron = 9.11 x 10⁻³¹ kg
![F = \frac{(9.11 \times 10^{-31}) \times(2.2\times 10^6)^2 }{4.63 \times 10^{-11}} \\\\F = 9.52 \times 10^{-8} \ N](https://tex.z-dn.net/?f=F%20%3D%20%5Cfrac%7B%289.11%20%5Ctimes%2010%5E%7B-31%7D%29%20%5Ctimes%282.2%5Ctimes%2010%5E6%29%5E2%20%7D%7B4.63%20%5Ctimes%2010%5E%7B-11%7D%7D%20%5C%5C%5C%5CF%20%3D%209.52%20%5Ctimes%2010%5E%7B-8%7D%20%5C%20N)
Thus, the central force acting on the electron as it revolves in a circular orbit is
.
Learn more about centripetal force here:brainly.com/question/20905151