A proton (+1.6 × 10^?19 C) moves 15.0 cm along the direction of an electric field of strength 3.0 N/C. The electrical potential difference between the proton's initial and ending points is:
a. 4.5 × 10^?19 V.
b. 0.45 V.
c. 24 V.
d. 0.55 V.
e. zero
b
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Capacitors in Combination: Three capacitors are arranged as shown in the figure, with a voltage source connected across the combination. C1 has a capacitance of 9.0 pF, C2 has a capacitance of 18.0 pF, and C3 has a capacitance of 27.0 pF. Find the potential drop across the entire arrangement if the potential drop across C2 is 257.0 V.
A. 1500 V B. 1000 V C. 470 V D. 430 V
The Sun is rising in the east and will be on your meridian in 2 hours. What time is it?
A) 2 A.M. B) 2 P.M. C) 10 A.M. D) 10 P.M. E) noon
A circus diver drops from a high pole into water far below. When he is half-way down
A) his potential energy is halved. B) he has gained an amount of kinetic energy equal to half his initial potential energy. C) his kinetic and potential energies are equal. D) all of the above E) none of the above
A clear plastic sandwich bag filled with water can act as a crude converging lens in air. If the bag is filled with air and placed under water, the effective lens is
1.converging 2.diverging