Gluons can emit
A. electrons.
B. protons.
C. gravitons.
D. baryons.
E. gluons.
E. gluons.
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_____ is a constant in Einstein's equations of space and time that represents a force of repulsion
A) Planck's constant B) Cosmological constant C) Archimedes' constant D) Hubble's constant
If ? 1 = 4.0 V, ? 2 = 12.0 V, R1 = 4 ?, R2 = 12 ?, C = 3 ?F, Q = 18 ?C, and I = 2.5 A, what is the potential difference Va ? Vb?
a.
?30 V
b.
30 V
c.
5.0 V
d.
?5.0 V
e.
?1.0 V
A telescope that suffers from chromatic aberration and has a low light gathering power is most likely
a. a small diameter reflecting telescope. b. a small diameter refracting telescope. c. a large diameter refracting telescope. d. a large diameter reflecting telescope. e. an infrared telescope.
How does the density of Jupiter compare to the terrestrial planets?
A) It is denser than all the terrestrial planets combined. B) It is denser than the Moon, but less dense than any of the others. C) Its density is slightly less than Mercury, but more than Mars. D) Its density is about the same as Mars. E) Its density is less than any terrestrial.