Match the words at the left to the correct blanks in the sentences at right. You may use the same words more than once.
Answer:
Leftover planetesimals that formed in the region of the solar system now occupied by the jovian planets are called comets.
Meteor showers are associated with debris from comets.
Pieces of asteroids that have fallen to Earth are called meteorites.
The objects that are sometimes visible in the night sky with long tails are comets.
Leftover planetesimals that formed inside the frost line are known as asteroids.
Ceres, Pluto, and Eris are all round in shape and classified as dwarf planets.
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What evidence do we have that Jupiter must have a substantial solid core under the thick clouds?
A) Its magnetic field must be form by rotating molten iron, like our own. B) Occasional breaks in the clouds reveal a solid surface at times. C) Jupiter's disk is more oblate than it should be, suggesting it has a higher density. D) Jupiter's disk is less oblate than it should be, if it were only hydrogen and helium. E) The Io flux tube goes straight down to Jupiter's iron core.
An atomic nucleus has a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the center of the nucleus? (k = 1/4??0 = 8.99 × 109 N • m2/C2, e = 1.60 × 10-19 C)
A) 5.4 × 10-8 N/C B) 5.6 × 10-8 N/C C) 5.8 × 10-8 N/C D) 6.0 × 10-8 N/C E) 6.2 × 10-8 N/C
If you see a rainbow near the time of sunset, where in the sky will the rainbow be?
a. overhead b. toward the eastern horizon c. toward the western horizon d. toward the northern horizon e. toward the southern horizon
A 2.0-m long conducting wire is formed into a square and placed in the horizontal xy-plane. A uniform magnetic field is oriented 30.0? above the horizontal with a strength of 9.0 T. What is the magnetic flux through the square?
A) 1.1 T ? m2 B) 1.9 T ? m2 C) 2.3 T ? m2 D) 18 T ? m2