Newton's law of gravitation applies to all ______________
Fill in the blank(s) with the appropriate word(s)
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Which of the following is true of Population I stars?
A) They are usually found in the halo of our Galaxy. B) They are usually found in globular clusters. C) They are usually found in the central bulge. D) They are usually found in the disk component of the galaxy.
Which of the following combinations of variables results in the greatest period for a pendulum?
A.
B.
C.
D.
L, mass = 
M, and maximum angular displacement = 
degreesE.
L, mass = 4M, and maximum angular displacement = 4 degreesEM waves in a vacuum travel at a speed
a. of c b. varying with their wavelength c. varying with their intensity d. of 299,792,458 m/s
Which of the following statements does not use the term angular size or angular distance correctly?
A) The angular size of the Moon is about 1/2 degree. B) The angular distance between those two houses in the distance is 30°. C) The angular distance between those two bright stars in the sky is about 2 meters. D) The angular size of the Sun is about the same as that of the Moon. E) You can use your outstretched hand to estimate angular sizes and angular distances.