When uranium emits a beta particle, the result is
A) a uranium ion.
B) a different isotope of uranium.
C) the first transuranic element.
D) all of the above
E) none of the above
Answer: C
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The phase angle in a series RL circuit at 1000 Hz with a 200-? resistor and a certain inductor is 40.0°. What is the value of the inductance in this circuit?
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A certain siren radiates sound uniformly in all directions. At a distance of 17 m from the siren, the intensity level is 49 db. How many watts of power does this siren put out? The threshold of human hearing is 1.0 × 10-12 W/m2
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A galaxy is observed receding from Earth with a speed of 9800 km/s. A redshifted spectral line originating in the galaxy is compared to the same spectral line originating in the laboratory
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