An object placed at a distance closer to a converging lens than the focal point always produces an image that is
A. The same size as the object
B. Smaller than the object
C. Virtual
D. Inverted
C. Virtual
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Areas always have dimensions _____ while volumes always have dimensions _____
a. m2, m3 b. L2, L3 c. Both a and b are correct. d. No answer is correct because of the "always.".
Simple Pendulum: A pendulum of length L is suspended from the ceiling of an elevator. When the elevator is at rest the period of the pendulum is T. How does the period of the pendulum change when the elevator moves downward with constant acceleration?
A. The period does not change. B. The period increases. C. The period decreases. D. The period becomes zero. E. The period increases if the upward acceleration is more than g/2 but decreases if the upward acceleration is less than g/2.
When the sum of the external forces and the sum of the external torques on a body are both zero, we can conclude that
A. the body is moving at constant velocity but is not rotating. B. the body is rotating at constant angular velocity but has no linear velocity. C. the body has neither linear nor angular velocity. D. the body may have constant linear or angular velocity, but not both simultaneously. E. the body may have constant linear or constant angular velocity, or both simultaneously.
A goldfish bowl is spherical, 8.0 cm in radius. A goldfish is swimming 3.0 cm from the wall of the bowl. Where does the fish appear to be to an observer outside? The index of refraction of water is 1.33
Neglect the effect of the glass wall of the bowl. A) 3.3 cm inside the bowl B) 3.9 cm inside the bowl C) 2.5 cm inside the bowl D) 3.0 cm inside the bowl E) 1.7 cm inside the bowl