Many of the smallest Jovian moons are most likely
A) captured asteroids and comets
B) captured objects from outside the solar system
C) small clumps of gas left over from the formation of the host planet
D) fragments of other moons
A
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Time Dilation: A spaceship enters the solar system moving toward the Sun at a constant speed relative to the Sun. By its own clock, the time elapsed between the time it crosses the orbit of Jupiter and the time it crosses the orbit of Mars is 50.0 minutes. How fast is the spaceship traveling towards the Sun? The radius of the orbit of Jupiter is 778 × 109 m, and that of the orbit of Mars is 228 × 109 m.
A. 0.319c B. 0.438c C. 0.522c D. 0.671c E. 0.982c
The Galileo spacecraft dropped a probe into Jupiter's atmosphere that survived to a depth of about 200 kilometers, or 0.3% of Jupiter's radius. Which is the deepest layer in which this probe was able to make measurements?
A) the gaseous hydrogen layer B) the liquid hydrogen layer C) the metallic hydrogen layer D) the core
The Earth's rotation axis is tilted from the orbital axis by how much?
What will be an ideal response?
The length of a telescope is 2.20 m and the focal length of the eyepiece is 1.9 cm. What is the focal length of the objective?
A) 41 cm B) 45 cm C) 111 cm D) 218 cm E) 16 cm