Electromagnetic induction is used in the operation of
a. generators
b. transformers
c. dynamic microphones
d. regenerative braking
e. all of the above
E
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Two-Source Interference of Sound: Two loudspeakers placed 6.00 m apart are driven in phase by an audio oscillator having a frequency range from 1908 Hz to 2471 Hz. A point P is located 4.70 m from one loudspeaker and 3.60 m from the other speaker. At what frequency of the oscillator does the sound reaching point P interfere constructively? The speed of sound is 344 m/s.
A. 2190 Hz B. 2420 Hz C. 2110 Hz D. 2340 Hz E. 2270 Hz
After a ball tossed upward leaves your hand, the force of gravity on it
A) no longer acts. B) gradually diminishes. C) gradually increases. D) remains constant. E) changes direction.
A hydrogen atom is in the 6h state. Which one of the following numbers could be an orbital angular momentum quantum number ? for that state?
A) 5 B) 6 C) 7 D) 8 E) 9
In gaseous form at the same temperature, the average speed of U-238 compared to the speed of U-235 is
A) less. B) more. C) the same.