One member of a pair of parallel conducting plates has potential 17 V. An electron is ejected from that plate at potential and travels the other plate, attaining a velocity of 
when it arrives. What is the potential of the second plate? The mass of the electron is 
kg.
A. 157 V
B. 89 V
C. 72 V
D. -54 V
E. 142 V
B. 89 V
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Phase Angles: A 20.0-mH inductor is connected in series with a 100-? resistor at 1.00 kHz in an ac circuit. What is the phase angle of this circuit?
A. 90.0° B. 51.5° C. 38.5° D. 0° E. 45°
The Big Rip refers to the
A) accelerating influence of dark energy, causing all matter to become completely ripped apart. B) phenomenon of dark energy causing the universe to rip into multiple spacetimes. C) possibility that galactic centers may suddenly implode causing galactic disintegration. D) phenomenon of dark energy decelerating, causing all matter to disintegrate.
The battery powering a light bulb is disconnected. As the light bulb's heat dissipates, how will the resistance and current change?
1.The resistance will decrease and the current will increase. 2.The resistance will increase and the current will be zero. 3.The resistance will increase and the current will decrease. 4.The resistance will decrease and the current will be zero.
A capacitor C is connected in series with a resistor R across a battery and an open switch. If a second capacitor of capacitance 2C is connected in parallel with the first one, the time constant of the new RC circuit will be
A) the same as before. B) twice as large as before. C) one-fourth as large as before. D) one-half as large as before. E) three times a large as before.