If three 3.0-µF capacitors are connected in parallel, what is the combined capacitance?
a. 0.46 mF
c. 9.0 mF
b. 1.0 mF
d. 0.75 mF
C
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An electron a distance d from a proton feels an electrostatic force of magnitude 
. Imagine that we move the electron so that it is a distance 2d from a helium nucleus (which has two protons and two neutrons). The magnitude of the force on the electron now is b , where b is
A. 4 B. 2 C. 1 D. 1/2 E. 1/4
Two infinite parallel surfaces carry uniform charge densities of 0.20 nC/m2 and ?0.60 nC/m2 . What is the magnitude of the electric field at a point between the two surfaces?
a. 34 N/C b. 23 N/C c. 45 N/C d. 17 N/C e. 90 N/C
The highest peak on Venus is called:
A) Shif. B) Gula. C) Cleopatra. D) Maxwell. E) Lakshmi.
The sensitive dependence upon initial conditions of the evolution of some physical systems is a feature of
a. gravitation. b. fractals. c. air resistance. d. dynamical chaos. e. quantum mechanics.