The Milky Way galaxy is
A) in the process of colliding with the Magellanic Cloud galaxies.
B) where Earth resides.
C) a spiral galaxy.
D) All of the above
Answer: D
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A normal heat engine is used to drive an electric generator. Part of the power from this generator runs a refrigerator that absorbs the waste heat from the engine and pumps it back into the hot reservoir.
A. first kind B. second kind
Explain why relativity allows us to travel, in principle, to the center of the Milky Way, but we would never be able to tell our friends back home about it
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The magnetic field at a certain distance from a wire carrying 2-A current is 4 ?T. What will be the magnetic field if the current in the wire is doubled?
A) 2 ?T B) 4 ?T C) 6 ?T D) 8 ?T E) 10 ?T
RLC Circuits: A series circuit has a 100-? resistor, a 0.100-?F capacitor, and a 2.00-mH inductor connected across a 120-V rms ac source operating at resonant frequency. What is the rms value of the voltage across the capacitor?
A. 54.0 V B. 120 V C. 150 V D. 533 V E. 170 V