How does the unified model of AGN explain blazars?
a. Blazars are Seyferts galaxies seen edge on.
b. Blazars are regions of the intergalactic medium where gas has been heated by a nearby AGN.
c. Blazars are relativistic jets from an AGN pointed toward our light of sight.
d. Blazars are newly formed AGN from a recently galactic collision.
C
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Country X increases its population by 5% per year. How long will it be before its population doubles?
A) It is impossible to answer this without knowing country X's population. B) 20 years C) 35 years D) 10 years E) 14 years
Spacetime is curved by
A) mass. B) the force of gravity. C) quantum fluctuations. D) the vacuum force.
Most of the chemical properties of atoms depend on
a. the neutrons in the nucleus. b. the electrons closest to the nucleus. c. the configuration of outer electrons. d. the configuration of protons in the nucleus. e. the attraction of protons to neutrons.
A 60-kg person rides down an icy hill of 20° slope while standing on a 3.0-kg flat-bottomed bathroom scale. Assume there is no frictional force between the bottom of the scale and the hill. The static friction force the scale exerts on the person is
a. 0 N. b. 201 N. c. 211 N. d. 553 N. e. 580 N.