The Moon is on an observer's meridian about ______________ minutes later each day
Fill in the blank(s) with correct word
50
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The interior of Earth is studied by using
a. infrared light waves. b. yellow light waves. c. seismic waves. d. gamma waves.
In a common dc circuit, electrons typically move at the speed of
A) a fraction of a centimeter per second. B) a few meters per second. C) sound. D) light. E) none of the above
One of the primary motivating forces behind our per capita reduction in energy use in the 1980's was _____________
a. a smaller population growth b. higher oil prices c. increased nuclear power costs d. increased domestic oil discoveries
A person sits on a freely spinning lab stool (no friction). When this person extends her arms,
A) her moment of inertia decreases and her angular velocity increases. B) her moment of inertia decreases and her angular velocity decreases. C) her moment of inertia increases and her angular velocity increases. D) her moment of inertia increases and her angular velocity decreases. E) her moment of inertia increases and her angular velocity remains the same.