Estimation: A reasonable estimate for the height of an ordinary adult male is
A. 50 cm.
B. 70 cm.
C. 200 cm.
D. 300 cm.
Answer: C
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The stars found in nebulae like the Orion Nebula probably formed
A) within the last few million years. B) about 10 million years ago. C) hundreds of millions of years ago. D) billions of years ago. E) at the beginning of the universe.
A bar magnet is falling through a loop of wire with constant velocity. The north pole enters first. As the south pole leaves the loop of wire, the induced current (as viewed from above) will be
a. clockwise. b. counterclockwise. c. zero. d. along the length of the magnet.
When static equilibrium is established for a charged conductor, the electric field just inside the surface of the conductor is
A) opposite to the field outside. B) equal to the perpendicular component of the field outside. C) equal to the field outside. D) zero. E) cannot be determined.
Which one of the following choices is not one of Kirchoff's rules?
a) junction rule b) emf rule c) loop rule d) slide rule e) resistance rule