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Physics, 13.10.2019 19:10 carleenespriu
Which statement best describes a device that has a high energy efficiency? its ratio of energy absorbed to energy released is high. its ratio of energy input to energy output is high. it wastes little energy. it wastes a lot of energy.
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Physics, 22.06.2019 16:50
Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.
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Which statement best describes a device that has a high energy efficiency? its ratio of energy abso...
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