The Sun orbits the center of the Milky Way galaxy once each 2.60 x 108 years, with a roughly circular orbit averaging 3.00 x 104 light years in radius. (A light year is the distance traveled by light in 1 y) Part (a) Calculate the centripetal acceleration of the Sun in its galactic orbit in m/s2 NumericA numeric value is expected and not an expression. Part (b) Calculate the average speed of the Sun in its galactic orbit in m/s. Numeric :A numeric value is expected and not an expression.

Respuesta :

Answer:

[tex]1.66553\times 10^{-10}\ m/s^2[/tex]

217494.87601 m/s  

Explanation:

Distance of Sun from the center of the Milky Way

[tex]r=3\times 10^8\times 3\times 10^4\times 365.25\times 24\times 3600[/tex]

Angular speed is given by

[tex]\omega=\dfrac{2\pi}{T}\\\Rightarrow \omega=\dfrac{2\pi}{2.6\times 10^8\times 365.25\times 24\times 3600}[/tex]

Centripetal acceleration is given by

[tex]a_c=\omega^2r\\\Rightarrow a_c=\left(\dfrac{2\pi }{2.6\times \:10^8\times 365.25\times 24\times 3600}\right)^2\times 3\times 10^8\times 3\times 10^4\times 365.25\times 24\times 3600\\\Rightarrow a_c=1.66553\times 10^{-10}\ m/s^2[/tex]

The centripetal acceleration is [tex]1.66553\times 10^{-10}\ m/s^2[/tex]

Velocity is given by

[tex]v=\omega r\\\Rightarrow v=\dfrac{2\pi}{2.6\times 10^8\times 365.25\times 24\times 3600}\times 3\times 10^8\times 3\times 10^4\times 365.25\times 24\times 3600\\\Rightarrow v=217494.87601\ m/s[/tex]

The average speed of the Sun in its galactic orbit is 217494.87601 m/s