The universe seems to be about how many years old?
a. 232 billion
b. 6 billion
c. 13.7 billion
d. 1 billion
c
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When the voltage across a nonohmic resistor is doubled, the current through it triples. What happens to the power delivered to this resistor?
a. This cannot be answered with the information given. b. The power decreases to 2/3 of the original amount. c. The power increases to 1.5 times the original amount. d. The power increases to 6 times the original amount.
Momentum is measured in:
a. kilograms per second. b. meters per kilogram. c. kilogram-meters per second. d. kilogram-meters per second per second. e. kilogram-seconds per meter.
If you are standing at the Earth's North Pole, which of the following would be located at the zenith?
a. The nadir b. The star Vega c. The celestial equator d. The north celestial pole
A 4000-? resistor is connected across a 220-V power source. What is the current through the resistor?
A) 0.055 A B) 1.8 A C) 5.5 A D) 18 A