How does the largest asteroid, Ceres, compare in size to other solar system worlds?
A) It is larger than the planet Mars.
B) It is larger than our Moon but smaller than Mercury.
C) It is larger than Mercury but smaller than Mars.
D) It is about a quarter the diameter of our Moon.
E) It is about the size of the two moons of Mars.
D) It is about a quarter the diameter of our Moon.
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A dust particle has a rest energy (mass) of 1.0 ?g. In joules, this rest energy is closer to:
A. 1017 J B. 1011 J C. 108 J D. 10-3 J E. 10-23 J F. Other (specify)
A loop of wire is rotated about a diameter (which is perpendicular to a given magnetic field.) In one revolution the induced current in the loop reverses direction how many times?
A) 0 B) 4 C) 2 D) 1 E) 3
Why did Tycho conclude that the Sun revolves around the Earth?
A) He did not conclude that the Sun revolves around the Earth. B) He could not detect the parallax of stars expected if the Earth revolves around the Sun. C) He incorrectly measured the distance to the Sun and concluded it was in a low orbit around the Earth. D) Long-held tradition prevented him from even considering the idea.
If a feather and a brick are both dropped from the same height at the same time in the classroom
A. both experience the same acceleration due to gravity B. the net acceleration of both is the same C. the net acceleration of the feather is greater © 2019 McGraw-Hill Education