Problem 4 the mass of a star 25 pt we see a very low mass star in orbit around an unseen star. we can assume that we have additional information that tells us the unseen star has almost all of the mass in the system. the star we see has a period of 5 years and a semi-major axis of about 4.5 x 10% km. what is the mass of the unseen star?

21.54 × 10³⁵ kg

Explanation:

Given:

Period = 5 years

semi-major axis = 4.5 × 10⁸ km

Now,

According to the Kepler's third law

we have,

Here,

T is the period

G is the gravitational force constant = 6.67 × 10⁻¹¹  m³/kg⋅s²

M is the mass of the star

on substituting the respective values, we get

or

M = 21.54 × 10³⁵ kg

the correct answer is blue and green.

a visible spectrum is electromagnetic spectrum color that can be seen by a normal human being by a single wavelength of light. the visible light spectrum is the range of wavelengths that make up visible light. the visible light spectrum passes through a prism enabling the rainbow reveals all the colors in the spectrum. these range from red, orange, yellow, green, blue and violet.