Current evidence suggests that many massive jovian planets orbit at very close orbital distances to their stars. How do we think these planets ended up on these close orbits?
A) These planets are jovian in nature and were able to form close to their stars because their solar nebulas were very cold in temperature.
B) These planets migrated inward after being born on orbits much farther from their stars.
C) Despite their large masses, these planets are terrestrial in nature and therefore could form in their inner solar systems.
D) These planets were captured from other solar systems.
B
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The dimensionless dielectric _________is the magnitude of the polarization of the dielectric material divided by the surface-charge density of a vacuum capacitor.
Fill in the blank(s) with the appropriate word(s).
A single convex spherical mirror produces an image which is
A) always virtual. B) always imaginary. C) always real. D) real only if the object distance is less than f. E) real only if the object distance is greater than f.
A satellite is in a circular parking orbit 6.98 × 106 m from the center of Earth. To initiate a Hohmann transfer, a rocket gives it an accelerating thrust so that its speed is increased to 8300 m/s
How far from the center of Earth will the satellite be when it reaches its apogee? The mass of Earth is 5.97 × 1024 kg and G = 6.67 x 10-11 N•m2/kg2. A) 3.12 × 107 m B) 2.48 × 107 m C) 1.06 × 107 m D) 6.73 × 107 m E) 4.75 × 107 m
Instantaneous speed and average speed are equal
a. always. b. for motion at constant speed. c. for accelerated motion. d. never.