A large nuclear power plant delivers energy of about
A. 1 megawatt
B. 1 gigawatt
C. 100 gigawatts
D. 1000 gigawatts
Answer: B. 1 gigawatt
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When you flick a card from beneath a coin that hardly moves, you're illustrating
A) inertia. B) equilibrium. C) support force. D) friction.
If a freely-falling object were somehow equipped with a speedometer, its speed reading would increase each second by about
A) 5 m/s. B) 10 m/s. C) 15 m/s. D) a variable amount.
Why was the invention of the transistor so significant?
A. it both amplifies weak signals and can be used as a voltage-controlled switch B. it increased the accuracy of computers C. it replaced integrated circuits D. it generated enough heat to eliminate heating devices in buildings
The graphs below represent current and voltage phasors at one instant of time. The solid arrows represent the voltage phasors, ?V, and the dashed arrows represent the current phasors, Imax.Which graph shows the correct relationship between current and voltage phasors for an inductor in an RL circuit?
a.
b.
c.
