The distribution of stars in the Galactic Bulge reminds us of the distribution of objects in the solar system's ________ Belt beyond Neptune
A) Oort B) Shapley C) Hubble D) Kuiper E) Kepler
D
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____ in other galaxies should contain luminous O and B stars if they are like the Milky Way
a. The halos b. The bulges c. The spiral arms d. The globular clusters e. The coronas
If the distance to the nearest star is 4.2 light-years, then
a. the star is 4.2 million AU away. b. the light we see left the star 4.2 years ago. c. the star must have formed 4.2 billion years ago. d. the star must be very young. e. the star must be very old.
A CD has a diameter of 12.0 cm. If the CD is rotating at a constant angular speed of 200 revolutions per minute, then the tangential velocity of a point on the circumference is
A. 1.76 m/s. B. 1.54 m/s. C. 1.41 m/s D. 1.26 m/s. E. 1.07 m/s.
Which form of relativity applies for observers who are accelerating?
a. Special relativity applies. b. General relativity applies. c. Both special relativity and general relativity apply. d. Neither applies since the observer must be in an inertial frame to use either one.