The ecliptic
A) occurs during a solar or lunar eclipse.
B) is the average distance between the Sun and Earth.
C) is the plane of Earth's orbit.
D) refers to the gases from which our solar system formed.
Answer: C
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Which of the following are attracted by gravity?
A) antimatter B) any object with mass C) electromagnetic radiation D) neutrinos E) All of the above
A body oscillates with simple harmonic motion along the x axis. Its displacement varies with time according to the equation x = 5.0 cos (?t). The magnitude of the acceleration (in m/s2) of the body at t = 1.0 s is approximately
A. 3.5. B. 49. C. 14. D. 43. E. 4.3.
A capacitor is designed so that one plate is large and the other is small. If the plates are connected to a battery,
1.the large plate has a greater charge than the small plate. 2.the large plate has less charge than the small plate. 3.the plates have equal, but opposite, charge.
About how long will a 0.5 star spend on the main sequence?
a. 5 billion years b. 57 billion years c. 570 million years d. 5 million years e. 500 thousand years