Which of the identical light bulb(s) is(are) brightest when the capacitor has half its maximum charge?
a.
A
b.
B
c.
C
d.
A and B
e.
All three are equally bright.
b
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Suppose that in a parallel universe, the proton and electron were identical to their counterparts in our own universe EXCEPT that the electron had twice as much charge as our electron. In our present universe,
the radius of the first Bohr orbit for hydrogen is a0 and the speed of an electron in that orbit is v0. In the parallel universe (a) what would be the radius (in terms of a0 ) of the first Bohr orbit for hydrogen? (b) what would be the speed (in terms of v0 ) of an electron in the first Bohr orbit for hydrogen?
Magnifying Glass With the Image at the Near Point of the Eye: Vicki very closely examines her new ruby ring with the jeweler's "loop." The ruby appears 7.0 times larger through this lens than when she views it close-up without the "loop." If her near point is 35 cm, what is the focal length of the lens of the "loop"?
A. 4.2 cm B. 6.7 cm C. 7.0 cm D. 3.6 cm E. 5.8 cm
A solar eclipse can only happen during a:
A) new moon. B) solstice. C) first quarter moon. D) full moon. E) perihelion passage of the Sun.
Briefly describe the three most commonly used methods of indirect planet detection
What will be an ideal response?