Series/Parallel Circuits: A portion of a circuit is shown in the figure, and the batteries are ideal. What is the potential difference VA - VB if I = 5.0 A?
A. 63 V
B. 35 V
C. 55 V
D. 45 V
E. 71 V
Answer: D
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A 4.0-mF capacitor initially charged to 50 V and a 6.0-mF capacitor charged to 30 V are connected to each other with the positive plate of each connected to the negative plate of the other. What is the final charge on the 6.0-mF capacitor?
a. 20 mC b. 8.0 mC c. 10 mC d. 12 mC e. 230 mC
A traveling wave train has wavelength 1.0 m and speed 20 m/s. Find the wave frequency
a. 0.025 Hz c. 40 Hz b. 20 Hz d. 10 Hz
Al is moving by you at a very high speed (close to the speed of light). You get out a clock and measure 10 seconds going by. If you also watch a clock in Al's ship, how much time will you see it record during your 10 seconds?
A) Al's clock will record less than 10 seconds. B) Al's clock will record more than 10 seconds. C) Al's clock will agree that 10 seconds go by.
A block having mass m travels along a horizontal frictionless surface with velocity vx. What impulse must be delivered to the block to reverse its direction?
1.–2mvx 2.–mvx 3.0 4.mvx 5.2mvx 6.None of the above 7.Cannot be determined