What is the approximate average temperature of the surface of the Sun?
A) 1 million K
B) 580,000 K
C) 58,000 K
D) 5800 K
E) 580 K
D) 5800 K
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How do globular clusters tell the Sun's spot in the Milky Way?
A: It's actually the positions of the open clusters that provide information. B: Their velocities can be used to determine their orbits. C: They are spherically distributed around the center of the Milky Way. D: Their colors indicate how far away they are from the center. E: They whisper it to you if you ask really nicely.
What is proper motion? How is it related to transverse velocity?
What will be an ideal response?
Although the Sun does not generate energy by gravitational contraction today, this energy-generation mechanism was important when the Sun was forming
Indicate whether the statement is true or false
A stone is thrown vertically upward with a speed of 24.0 m/s.
(a) How fast is it moving when it reaches a height of 13.0m? (b) How much time is required to reach this height?