Due to the extremely rapid orbital velocities of material near the center of many galaxies, these galaxies are believed to contain ____________________ at their centers
Fill in the blank(s) with correct word
a supermassive black hole
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Describe some of the early theories for why the Sun shines and why they are no longer accepted as viable
What will be an ideal response?
A 60.0 cm long organ pipe is filled with air and is open at both ends. The velocity of sound in air at 0is 331 m/s. What is the wavelength of the fundamental mode?
A. 115 cm B. 120 cm C. 131 cm D. 142 cm E. 167 cm
How would the data be influenced by an increase of friction in the pulley?
Which statement about stellar populations is correct?
a. Population I stars are found in the disk and halo; Population II stars are found in the bulge. b. Population I stars are found in the halo; Population II stars are found in the disk and bulge. c. Population I stars are found in the disk; Population II stars are found in the bulge and halo. d. Population II stars are found in the disk; Population I stars are found in the bulge and halo. e. Population I stars are found in the bulge; Population II stars are found in the disk and halo.