In a binary system, the more massive star
a. is at the center of mass.
b. is farthest from the center of mass.
c. is nearest the center of mass.
d. follows the largest orbit.
e. shows a larger Doppler shift in its spectral lines.
C
You might also like to view...
From the horizon to the observer's zenith is an angle of
A) 23.5 degrees for observers at the Tropics of Cancer and Capricorn. B) 30 degrees for observers at a latitude of 30 degrees north. C) 90 degrees for everyone on the Earth. D) 66.5 degrees for everyone on the Earth. E) 0.0 degrees for an observer at the Earth's north pole.
If the corona is so hot, why do we have to wait for a total solar eclipse to see it?
What will be an ideal response?
In our study of falling objects, we noted that the total distance fallen was approximately 5 m in 1 s, 20 m in 2 s, 45 m in 3 s, and 80 m in 4 s. Which of the following best describes the pattern in this data?
A) The path followed by the motion is parabolic. B) The path followed by the motion is elliptical. C) Distance is proportional to the time. D) Distance is inversely proportional to the square of the time. E) Distance is proportional to the square of the time.
A solution with a pH of 14 is
a. strongly acidic. b. weakly basic. c. strongly basic. d. weakly acidic.