Name the rapidly rotating disk at the center of the galaxy spinning around the black hole.
A. Acceleration disk.
B. Galactic circular storm.
C. Compaction zone.
D. Convection cell.
E. Accretion disk.
Ans: E. Accretion disk.
You might also like to view...
Spherical Mirrors: An object is placed 50 cm in front of a concave mirror with a focal length of 25 cm. What is the magnification produced by the mirror?
A. -0.50 B. -1.0 C. +1.5 D. -2.0 E. +1.0
Suppose you could float in space just a few meters above Saturn's rings. What would you see as you looked down on the rings?
A) countless icy particles, ranging in size from dust grains to large boulders B) a solid, shiny surface, looking much like a piece of a Blu-ray disk or DVD (or vinyl record album) but a lot bigger C) dozens of large "moonlets" made of metal and rock, each a few kilometers across D) long, solid strings of matter, each distinct from the next
Which stellar spectral type has the strongest molecular absorption lines in its visible light spectrum?
A) O B) B C) G D) K E) M
These four motion diagrams show the motion of a particle along the x-axis. Which motion diagrams correspond to a positive acceleration?
a. A and D
b. B and D
c. A, B, C, and D
d. A and C