An eclipsing binary has been analyzed and it has been determined that the ratio of the mass of star A to the mass of star B is 6 and the total mass of the two stars is 26 solar masses. What are the masses of star A and star B?
a. Star A has a mass of 1 solar mass and star B has a mass of 6 solar masses.
b. Star A has a mass of 20 solar mass and star B has a mass of 6 solar masses.
c. Star A has a mass of 31.2 solar mass and star B has a mass of 5.2 solar masses.
d. Star A has a mass of 22.3 solar mass and star B has a mass of 3.7 solar masses.
e. The masses of star A and star B cannot be determined from the information given.
d
You might also like to view...
A 95-N force exerted at the end of a 0.32-m long torque wrench produces a torque of 15 N ? m. What is the angle (less than 90°) between the wrench handle and the direction of the exerted force?
A) 30° B) 24° C) 36° D) 42°
Tritium (3H) has a half-life of 12.3 years and releases 0.018 6 MeV energy per decay. What is the activity of a 1.4-gram sample of tritium? (NA = 6.02 × 10^23 mol–1, 1 year = 3.16 × 10^7 s, 1 MeV = 1.6 × 10^–13 J, and mt = 3.016 05 u)
a. 9.3E+12 Bq b. 1.5E+26 Bq c. 5.0E+14 Bq d. 5.8E–1 Bq e. 1.7E+3 Bq
A vertical wire carries a current vertically downward. To the east of this wire, the magnetic field points
A) north. B) east. C) south. D) down.
Who, in 1925, postulated that matter, as well as light, has properties of both waves and particles?
a. Planck b. Heisenberg c. de Broglie d. Einstein