A capacitor of capacitance C takes 2 s to reach 63% of its maximum charge when connected in series to a resistance R and a battery of emf
How long does it take (from zero initial charge) for this capacitor to reach 95% of its maximum charge? A)
3 s
B)
5 s
C)
7 s
D)
4 s
E)
6 s
E
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Pascal's Principle: The water pressure to an apartment is increased by the water company. The water enters the apartment through an entrance valve at the front of the apartment. Where will the increase in the static water pressure be greatest when no water is flowing in the system?
A. at a faucet close to the entrance valve B. at a faucet far from the entrance valve C. It will be the same at all faucets. D. There will be no increase in the pressure at the faucets.
What element are white dwarfs made of? Why?
What will be an ideal response?
The quantity of electrical potential, the volt, is dimensionally equivalent to:
a. force/charge. b. force × charge. c. electric field × distance. d. electric field/distance.
The lunar _______________ are saturated with craters
Fill in the blank(s) with correct word