Nellie's weight and normal force usually have the same magnitude when she stands on a
A) horizontal surface.
B) inclined surface.
C) either a horizontal or inclined surface.
Answer: A
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What is the probability of rolling either a 7 or 11 on a single roll of a pair of dice?
A. 1/6 B. 2/9 C. 3/8 D. 1/3 E. 1/2
Besides fossil fuels, the only other significant commercial sources of energy are ______________ and ______________
Fill in the blank(s) with correct word
Consider the various frequencies of the three photons emitted from the following three individual electron transitions in the figure below: n=3 to n=2; n=2 to n=1; n=3 to n=1. These transitions would produce three spectral lines in a spectroscope
If the energy spacing between the levels were equal, would this affect the number of spectral lines? A) Yes, two otherwise separate lines would converge into a single more intense line. B) No, but the spacing between the spectral lines would change. C) Yes, two otherwise separate lines would converge into a single less intense line. D) No, but some would then require a prism in order to be seen.
A p-type semiconductor is produced in polyacetylene by doping with:
(a) Boron (b) Aluminum (c) Fluorine (d) Lithium