The apparent visual magnitude of a star is 7.3 . This tells us that the star is
a. one of the brighter stars in the sky.
b. bright enough that it would be visible even during the day.
c. not visible with the unaided eye.
d. very far from Earth.
e. very close to Earth.
C
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Most of the mass in the Milky Way Galaxy is located
A) in the halo (above/below the disk). B) within the disk. C) in the stars in the spiral arms. D) in the gas and dust. E) in the central bulge of the galaxy.
The resolving power of a microscope refers to the ability to
A) distinguish objects of different colors. B) form clear images of two points that are very close together. C) form a very large image. D) form a very bright image. E) form a very microscopic image.
As minerals crystallize in cooling magma, are the minerals with lower amounts of silica or the minerals with higher amounts of silica the first to crystallize?
What will be an ideal response?
Special relativity predicts that moving clocks run slow
Indicate whether the statement is true or false