Physics, 18.09.2019 17:30, gregorio03
Two loudspeakers are located 3.70 m apart on an outdoor stage. a listener is 18.7 m from one and 19.4 m from the other. during the sound check, a signal generator drives the two speakers in phase with the same amplitude and frequency. the transmitted frequency is swept through the audible range (20 hz–20 khz). the speed of sound in the air is 343 m/s. what are the three lowest frequencies that give minimum signal (destructive interference) at the listener's location?
Answers: 3
Physics, 21.06.2019 22:30, jadalysrodriguez
The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force
Answers: 1
Physics, 22.06.2019 05:00, mariamalakozay603
Aperson standing in a canoe exerts a force of 700 n to throw an anchor over the side. find the acceleration of the canoe if the total mass of the canoe and the person is 100 kg?
Answers: 1
Two loudspeakers are located 3.70 m apart on an outdoor stage. a listener is 18.7 m from one and 19....
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