A star more luminous than our Sun will have a habitable zone that is
A) narrower and farther from the star than the habitable zone of the Sun
B) narrower and closer to the star than the habitable zone of the Sun
C) wider and farther from the star than the habitable zone of the Sun
D) wider and closer to the star than the habitable zone of the Sun
C
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An inductor produces a back emf in a DC series RL circuit when a switch connecting the battery to the circuit is closed. We can explain this by
a. Lenz's law. b. increasing magnetic flux within the coils of the inductor. c. increasing current in the coils of the inductor. d. all of the above. e. only (a) and (c) above.
Light having a frequency in vacuum of 6.0 × 1014 Hz enters a liquid of refractive index 2.0. What is the frequency of the light in this liquid? (c = 3.0 × 108 m/s)
A) 12 × 1014 Hz B) 6.0 × 1014 Hz C) 3.0 × 1014 Hz D) 1.5 × 1014 Hz E) 2.0 × 1014 Hz
Where did comets that are now in the Kuiper belt originally form?
A) in the asteroid belt B) inside Jupiter's orbit C) between the orbits of Jupiter and Neptune D) near the distance at which they orbit today E) in the Oort cloud
Light passes through a pair of very thin parallel slits. The resulting interference pattern is viewed far from the slits at various angles ? relative to the centerline coming outward from the midpoint between the slits
The central bright fringe is at ? = 0°. If the central bright fringe has intensity I0, what is the intensity of the next bright fringe on either side of it? A) I0 B) I0/ C) I0/2 D) I0 cos 15° E) I0 cos2 15°