Answer:
The value is [tex]v = 1.309*10^{5}\ m/s[/tex]
Explanation:
The radius is [tex]r = 7.40 *10^{20} \ m[/tex]
The mass of the ordinary matter is [tex]M_{rod} = 1.90 *10^{41}\ kg[/tex]
Generally the speed of the star is mathematically represented as
[tex]v = \sqrt{\frac{G * M}{r} }[/tex]
Here G is the gravitational constant with a value
[tex]G = 6.67384 * 10^{-11}[/tex]
So
[tex]v = \sqrt{\frac{6.67384 * 10^{-11} * 1.90 *10^{41}}{7.40 *10^{20}} }[/tex]
=> [tex]v = 1.309*10^{5}\ m/s[/tex]
