Energy in Capacitors: When a 12.0-V battery causes 2.00 ?C of charge to flow onto the plates of an air-filled capacitor, how much work did the battery do?

A. 24.0 ?J
B. 12.0 ?J
C. 144 ?J
D. 576 J


Answer: B

Physics & Space Science

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Two resistors of values 6.0 and 14.0 ? are connected in parallel. This combination in turn is hooked in series with a 2.0-? resistor. What is the overall resistance of this combination?

a. 1.4 ? b. 11 ? c. 6.2 ? d. 22 ? e. 4.2 ?

Physics & Space Science

What is the power of a lens that has a focal length of -40 cm and a width of 2.0 cm?

A) -2.5 diopters B) -0.50 diopters C) +2.5 diopters D) +4.0 diopters E) -50 diopters

Physics & Space Science

The organisms called ______________ were the first organisms with eyes and were wiped out at the end of the Paleozoic era

Fill in the blank(s) with correct word

Physics & Space Science

Characteristic K X-rays are the result of:

a. inner electron transitions. c. nuclear electron states. b. outer electron transitions. d. buckytubes.

Physics & Space Science