When the perpendicular distance from a linear charge distribution is tripled, what happens to the electric field strength?
A. it stays the same
B. it decreases by a factor of 3
C. it decreases by a factor of 9
D. it decreases by a factor of (3)1/2
E. it increases by a factor of (3)1/2
B. it decreases by a factor of 3
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A television advertisement claiming that a product is light-years ahead of its time does not make sense because
A) it doesn't specify the number of light-years. B) it uses "light-years" to talk about time, but a light-year is a unit of distance. C) a light-year is an astronomically large unit, so a product could not possibly be so advanced. D) light-years can only be used to talk about light.
A mixture of red and green pigments appears
A) orange. B) yellow. C) magenta. D) blue. E) muddy-brown.
The speed of light in a certain material is measured to be 2.2 × 108 m/s. What is the index of refraction of this material? (c = 3.0 × 108 m/s)
A) 1.1 B) 1.2 C) 1.4 D) 1.6 E) 1.8
The atomic theory was revived and put on a solid experimental foundation in about 1803 by
a. Proust. b. Dalton. c. Boyle. d. Lavoisier.