The latitude of the Earth's North Pole is
180 degrees.
90 degrees.
12 hours.
0 degrees.
90 degrees.
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The mean free path of air molecules at room temperature and atmospheric pressure is about:
A. 10?3 m B. 10?5 m C. 10?7 m D. 10?9 m E. 10?11 m
In order to calculate the fraction of the total power delivered to the load resistor in a circuit consisting of a battery and a load resistor, one needs to know only the
1.load resistance. 2.internal resistance. 3.load resistance and internal resistance. 4.emf, load resistance, and internal resistance.
When an initially uncharged capacitor is charged through a 25-k? resistor by a 75-V dc ideal power source, it takes 0.23 ms for the capacitor to reach 50% of its maximum charge? What is the capacitance of this capacitor?
What will be an ideal response?
The study of energy levels in atoms is called
A) special relativity. B) general relativity. C) quantum mechanics. D) classical mechanics. E) particle physics.