A particle with charge Q is on the y axis a distance a from the origin and a particle with charge q is on the x axis a distance d from the origin. The value of d for which the x component of the force on the second particle is the greatest is:
A) 0
B) a
C) sqrt(2a)
D) a/2
E) a/sqrt(2)
E) a/sqrt(2)
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The thermal expansion of a solid is caused by
a. the breaking of bonds between atoms. b. increasing the amplitude of the atoms vibration. c. increasing the distance between equilibrium positions for the vibrating atoms. d. all of the above.
Measuring the Doppler shift of material at various distances from the center of a galaxy can be used to construct a(n) ________________ for that galaxy
Fill in the blank(s) with correct word
Which statement is always correct when applied to a charge distribution located in a finite region of space?
a. Electric potential is always zero at infinity. b. Electric potential is always zero at the origin. c. Electric potential is always zero at a boundary surface to a charge distribution. d. Electric potential is always infinite at a boundary surface to a charge distribution. e. The location where electric potential is zero may be chosen arbitrarily.
The maximum magnification of a typical light optical microscope is
(a) 100,000 times (b) 10,000 times (c) 1000 times (d) 100 times