A circuit consists of three identical lamps connected to a battery as in Figure OQ28.14. The battery has some internal resistance. The switch S, originally open, is closed. What happens to the total power delivered to the lamps by the battery?
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Any object moving towards or away from the Earth will show a Doppler shift when observed from Earth
Indicate whether the statement is true or false
A 20-?F capacitor charged to 2.0 kV and a 40-?F capacitor charged to 3.0 kV 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 20-?F capacitor after the two are so connected?
a. 53 mC b. 27 mC c. 40 mC d. 80 mC e. 39 mC
Mutual Inductance: Coil A is close to, but not touching, coil B. If a steady counterclockwise 100-A current flows in coil A, what can you say about the induced current in coil B?
A. There will be no induced current in coil B. B. The current in coil B will be equal to 100 A clockwise. C. The current in coil B will be equal to 100 A counterclockwise. D. The current in coil B will be counterclockwise and less than 100 A, but not zero. E. The current in coil B will be clockwise and less than 100 A, but not zero.
Popeye, of mass 75.0 kg, has just downed a can of spinach. He accelerates quickly and stops Bluto, of mass 650 kg (Bluto is very dense), who is charging in at 15.0 m/s. What was Popeye's speed?
a. 1.73 m/s b. 48.3 m/s c. 120 m/s d. 130 m/s e. 15.0 m/s