The large Jovian satellites have sizes comparable to Mercury. Why do they have an icy composition compared to Mercury's rocky composition?
A) They formed beyond the frost line, where ices were three to four times more abundant than metals and rock.
B) They are captured comets.
C) They experienced many more cometary impacts during the Late Heavy Bombardment.
D) They formed from hydrogen compounds expelled by the Jovian planets.
A
You might also like to view...
Using the velocity transformation formula, calculate the speed in the "rest frame" of a particle which is seen to be moving at c in a "moving frame"
What will be an ideal response?
A 40 watt fluorescent bulb is rated for use in a 120 volt line. During a brownout the actual voltage drops to 102 V. The actual power dissipated in the bulb under these conditions is
A. 30.0 W. B. 47.1 W. C. 28.9 W. D. 0.283 W.
What is a planetary nebula?
A) gas ejected from a low-mass star in the final stage of its life B) gas created from the remains of planets that once orbited a dead star C) interstellar gas from which planets are likely to form in the not-too-distant future D) the remains of a high-mass star that has exploded
A 4.0-cm tall object is placed 60 cm in front of a convex lens of focal length of magnitude 30 cm. What are the nature and location of the image?
A) The image is real, 2.5 cm tall, 30 cm on the same side as object. B) The image is virtual, 2.5 cm tall, 30 cm on the other side of the lens. C) The image is virtual, 2.0 cm tall, 15 cm on the other side of the lens. D) The image is virtual, 4.0 cm tall, 60 cm on the same side as object. E) The image is real, 4.0 cm tall, 60 cm on the other side of the lens.