How much work is done by 3.00 mol of ideal gas when it triples its volume at a constant temperature of 127°C? The ideal gas constant is R = 8.314 J/mol ? K
A) 12.7 kJ
B) 9.97 kJ
C) 11.0 kJ
D) 15.3 kJ
E) 1.20 kJ
C
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Charge is distributed uniformly on the surface of a spherical nonconducting shell. A point particle with charge q is inside. The electrical force on the particle q is least when:
A) it is near the inside surface of the shell B) it is at the center of the shell C) it is halfway between the shell center and the inside surface D) it is near, but not at, the center of the shell E) all of the above (the force is zero everywhere inside)
Three capacitors have capacitances C1 < C2 < C3 . If these capacitors are connected in series, which of the following is true for the resulting equivalent capacitance?
a. Ceq < C1 b. Ceq > C3 c. Ceq = (C1 + C2 + C3)/3 d. None of the above is always correct.
A 500 Hz Siren is moving at 100f / s toward a person running away from it at 25 f/s. What pitch does the person hear? (v vound =1100 f/s)
The circuit below contains three 100-watt light bulbs and a capacitor. The emf ? = 110V. The capacitor is fully charged. Which light bulb(s) is(are) dimmest?
a.
A
b.
B
c.
C
d.
A and B
e.
All three are equally bright (or dim).