Where would you least expect to find an ionization nebula?
A) in the galactic disk
B) near a hot, young star
C) in a spiral arm
D) in the halo of our galaxy
D) in the halo of our galaxy
You might also like to view...
A fluid is flowing with an average speed of 1.5 m/s through a tube that has a radius of 2.0 mm and is 18 cm long. The drop in pressure is 967 Pa. What is the viscosity of the fluid?
A) 0.028 N ? s/m2 B) 0.0056 N ? s/m2 C) 0.013 N ? s/m2 D) 0.0034 N ? s/m2 E) 0.0018 N ? s/m2
What form or forms of energy does a falling elastic ball have when it is at its most-squeezed position on the floor, before it begins to rebound [see figure above]?
A) Kinetic and gravitational and elastic B) Kinetic only C) Kinetic and elastic D) Gravitational only E) Elastic only
A person runs up a long flight of stairs in 10 seconds. If the person's weight is 600 N and the vertical height of the stairs is 20 meters, what is the person's power output?
When the absolute magnitudes, or brightnesses, of stars are plotted against their surface temperatures or colors, we obtain a(n)
a. Hertzsprung-Russell (or H-R) diagram. b. straight line. c. random pattern. d. none of the above