Relative to the stars in the sky, the Sun moves
a. about one degree westward each day.
b. about one degree eastward each day.
c. about 360 degrees westward each day.
d. about 360 degrees eastward each day.
e. along the celestial equator.
b
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The smelting of a metal
(a) Raises the temperature above the melting point. (b) Separates the metal from the ore. (c) Deforms the metal into a shape. (d) Cools the metal very rapidly from a high temperature.
A particle moving along the x axis has a position given by x = 54t ? 2.0t3 m. At the time t = 3.0 s, the speed of the particle is zero. Which statement is correct?
a. The particle remains at rest after t = 3.0 s. b. The particle no longer accelerates after t = 3.0 s. c. The particle can be found at positions x < 0 m only when t < 0 s. d. All of the above are correct. e. None of the above is correct.
What does it mean for a Kuiper Belt Object to be considered a plutino?
What will be an ideal response?
Since 1967 the standard definition for the second has been based on which of the following?
a. characteristic frequency of the cesium-133 atom b. average solar day c. sidereal day d. Greenwich Civil Time e. None of the above