A circuit contains a 2.0-M? resistor in series with an uncharged capacitor. When this combination is connected across an ideal battery, the capacitor reaches 25% of its maximum charge in 1.5 s. What is its capacitance?
What will be an ideal response?
2.6 µF
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What do we mean by a mass extinction?
A) the extinction of a large fraction of the world's plant and animal species in a relatively short period of time B) the extinction of large animals, such as dinosaurs C) an extinction caused by the impact of an asteroid or comet D) the extinction of any species of plant or animal that has mass
Which of the following is false?
A) The order of events can be different for observers in different reference frames. B) From your point of view, time runs slower in the reference frame of anyone moving relative to you. C) If one observer measures two events to be simultaneous, all observers must agree on their simultaneity. D) Time dilation is an observationally verified fact. E) Time runs slower near a black hole.
The density of water at 0°C is 999.84 kg/m3 and at 4°C it is 999.96 kg/m3. A 1.0-liter container, full to the brim with water at 4°C is placed in the refrigerator
By the time that the temperature of the water reaches 0°C, how much of the water has spilled from the container, assuming that the contraction of the container is negligible? A) 1.1 × 10-7m3 B) 1.2 × 10-7m3 C) 1.3 × 10-7m3 D) 1.4 × 10-7m3 E) 1.5 × 10-7m3
Maxwell Mons on Venus is a huge:
A) impact crater larger than Texas. B) shield volcano. C) rift valley. D) tectonic mountain chain, like the Himalayas. E) ocean basin larger than the Pacific Ocean.