All the following types of objects are found almost exclusively in the disk (rather than the halo) of the Milky Way except
A) globular clusters.
B) young stars.
C) x-ray binaries.
D) high-mass, red supergiant stars.
A) globular clusters.
You might also like to view...
What causes the long tail to protrude from this galaxy?
A: A supernova explosion blew material out in that direction. B: The galaxy is moving so fast through space that it's leaving a trail of heavier matter behind. C: A unique and yet unexplained phenomenon creates an anti-gravity effect that's pushing stars out of the galaxy. D: Tidal forces caused by interaction with another galaxy are drawing the material off. E: An incredibly powerful extraterrestrial civilization is reshaping the galaxy to suit its tastes.
Deuterium and lithium-7 are part of the 4.5% normal matter
a. True b. False Indicate whether the statement is true or false
A solar mass star will evolve off the main sequence when
A) it completely runs out of hydrogen. B) it expels a planetary nebula to cool off and release radiation. C) it explodes as a violent nova. D) it builds up a core of inert helium. E) it loses all its neutrinos, so fusion must cease.
Two blocks connected by a string are pulled across a horizontal surface by a force applied to one of the blocks, as shown. The coefficient of kinetic friction between the blocks and the surface is 0.25. If each block has an acceleration of 2.0 m/s2 to the right, what is the magnitude F of the applied force?
?
?
A. 25 N B. 18 N C. 11 N D. 14 N E. 7.0 N