A rock is thrown vertically into the air. At the top of its path, its acceleration is
A) zero.
B) 10 m/s2.
C) between 0 and 10 m/s2.
D) greater than 10 m/s2.
Answer: B
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Self-Inductance: The current flowing through a circuit is changing at a rate of 6.0 A/s. If the circuit contains a 190-H inductor, what is the emf across the inductor?
A. 1100 V B. 11 mV C. 32 mV D. 32 V
An astronaut stands by the rim of a crater on the moon, where the acceleration of gravity is 1.62 m/s2 To determine the depth of the crater, she drops a rock and measures the time it takes for it to hit the bottom
If the depth of the crater is 120 m, how long does it take for the rock to fall? A) 3.04 s B) 12.2 s C) 29.3 s D) 32.1 s E) 37.5 s
A charge of uniform volume density (40 nC/m3) fills a cube with 8.0-cm edges. What is the total electric flux through the surface of this cube?
a. 2.9 N × m2/C b. 2.0 N × m2/C c. 2.6 N × m2/C d. 2.3 N × m2/C e. 1.8 N × m2/C
The climatic zones of Pangaea ranged from
A) glaciation in the south, and a mild temperate climate in the north. B) cold, dry temperatures in the north, and warm, tropical temperatures in the south. C) humid uplands in the north, and drier, desert like conditions in the south. D) widespread glaciation in the north, and a warm, tropical climate in the south.