A double-star system with each star having the mass of the Sun has an orbital period of 1 year. A second double star system, also with each star having the mass of the Sun, has an orbital period of 8 years. If the separation of the stars in the first system is d and the orbits in both cases are circular, what is the separation of the stars in the second system?
a. 0.5d b. 2d
c. 4d d. 8d
c
You might also like to view...
Radioactivity Basics: What are the mass number A and the charge (in units of e) for each of the following particles or rays?(a) beta-plus(b) beta-minus(c) gamma ray
What will be an ideal response?
The single most important determinant of the temperature, density, radius, luminosity, and pace of evolution of a protostar is its
A) molecular composition. B) chemical composition. C) spin. D) mass. E) magnetic field.
Atoms heavier than helium were at one time manufactured by
A) photosynthesis. B) thermonuclear fusion. C) radiant energy conversion. D) radioactivity. E) none of the above
In ?- decay, the number of protons in the nucleus is
A) decreased by 1. B) decreased by 2. C) increased by 1. D) increased by 2. E) remains unchanged.