The numerical value of G, the gravitational constant, was determined
A. from knowledge of Earth's mass.
B. from the law of universal gravitation and the value of the acceleration due to gravity.
C. from the value of the Moon's acceleration.
D. by measuring the force between masses in the laboratory.
Answer: D. by measuring the force between masses in the laboratory.
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The object described in problem N12T.2 has an orbital eccentricity of:
A. 1.08 B. 1.81 C. 0.81 D. 0.90 E. 1.35 F. Other (specify)
Which of the following gases absorbs ultraviolet light best?
A) carbon dioxide B) nitrogen C) oxygen D) hydrogen E) ozone
A scalar quantity is defined as
A) a quantity that is specified by a numerical value only. B) a quantity that is specified by using both a numerical value and a direction.
Shapley found that globular clusters are only found in the Galactic bulge
Indicate whether the statement is true or false