A capacitor of capacitance C = 4 mC is discharged through a resistor of resistance R = 4 k?. How long will it take for the capacitor to lose half its initial stored energy?
A)
9.2 s
B)
2.7 s
C)
10.2 s
D)
5.5 s
E)
1.6 s
D
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Slanting Surfaces With Friction: Two packages are connected by a very light string that goes over an ideal pulley as shown in the figure. Package A has a mass of 3.0 kg and can slide along a rough plane inclined at 30° above the horizontal. The string acts on package A parallel to the surface of the plane. The coefficient of static friction between package A and the plane is 0.40. What minimum mass should package B have in order to start package A sliding up the ramp?
Fill in the blank(s) with the appropriate word(s).
Series Resonance: A series circuit consists of a 0.440-H inductor, a 380.0-? resistor, a 5.70-?F capacitor, and an ac voltage source of amplitude 250.0 V. Find the rms voltage across the capacitor when the circuit operates at resonance.
Fill in the blank(s) with the appropriate word(s).
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Fill in the blank(s) with correct word
Gamma rays are
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