An electrical device that operates on the principle of magnetism is a ____.
a. motor
b. light bulb
c. receptacle
d. safety switch
a. motor
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Describe the nitrogen cycle that takes place in an aquarium
What will be an ideal response?
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What is the proper equation for current I in the circuit below 
A. Vs / 2R B. 2Vs / R C. 2R Vs D. R Vs E. Vs / R
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A BCD-to-decimal decoder has
A) 1 data input and 10 data outputs. B) 2 data inputs and 9 data outputs. C) 4 data inputs and 16 data outputs. D) 4 data inputs and 10 data outputs.
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Green homes should aim for ____ ENERGY STAR or 2009 IECC in cold climates.
A. significantly lower U-factors than B. significantly higher U-factors than C. the same U-factors as D. slightly higher U-factors than
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