Given 3 capacitors: 4.00 ?F, 7.00 ?F, and 9.00 ?F; what is the equivalent capacity if they are connected in series?
What will be an ideal response?
1.98 ?F
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Heat comes from the Sun to Earth by the process of _______.
a. conduction b. radiation c. convection d. all of these, though radiation is greater
The cosmic background radiation corresponds to a temperature of about
A) 1.4 K. B) 4.9 K. C) 2.7 K. D) 3.8 K. E) 5.5 K.
For a converging lens with two convex surfaces, the radius of curvature for both surfaces is 20 cm. If the focal length is 10 cm, what must the index of refraction be?
a. 1.5 c. 2.0 b. 2.5 d. 3.0
Two large parallel conducting plates are 8.0 cm apart and carry equal but opposite charges on their facing surfaces. The magnitude of the surface charge density on either of the facing surfaces is 2.0 nC/m2 . Determine the magnitude of the electric potential difference between the plates
a. 36 V b. 27 V c. 18 V d. 45 V e. 16 V