A 2.0 ?F and a 4.0 ?F capacitor are connected in series across an 8.0-V DC source. What is the charge on the 2.0 ?F capacitor?
A)
2.0 ?C
B)
4.0 ?C
C)
12 ?C
D)
11 ?C
E)
25 ?C
D
You might also like to view...
Pascal's Principle: A 12,000-N car is raised using a hydraulic lift, which consists of a U-tube with arms of unequal areas, filled with oil with a density of 800 kg/m3 and capped at both ends with tight-fitting pistons. The wider arm of the U-tube has a radius of 18.0 cm and the narrower arm has a radius of 5.00 cm. The car rests on the piston on the wider arm of the U-tube. The pistons are initially at the same level. What is the force that must be applied to the smaller piston in order to lift the car after it has been raised 1.20 m? For purposes of this problem, neglect the weight of the pistons.
A. 0.954 kN B. 1.88 kN C. 1.96 kN D. 3.67 kN E. 1.20 kN
What do astronomer's mean when they say that Earth is not in a special spot?
A. All space is expanding so Hubble's law would apply around all galaxies. B. The Big Bang explosion sent all material blasting away from the Earth. C. Hubble measured the expansion law from the Moon, not from the Earth. D. Hubble's law applies to some galaxies but not to others, so many planets besides Earth have their own Hubble's law. E. The Sun is at the center of the universe, but the Earth is not.
Newton discovered
A) gravity. B) that gravity is universal. C) neither of these
If y = 0.02 sin (30x ? 400t) (SI units), the angular frequency of the wave is
a. 30 rad/s b. 30/2? rad/s c. 400/2? rad/s d. 400 rad/s e. 40/3 rad/s