Two In-Phase Loudspeakers That Emit Sound with the Same Frequency

question 7

Multiple Choice

Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are separated by a distance of 8.00 m.A person is standing 12.0 m away from the wall,equidistant from the loudspeakers.When the person moves 3.00 m parallel to the wall,she experiences destructive interference for the second time.What is the frequency of the sound? The speed of sound in the room is 343 m/s.CAREFUL! The distance to the wall is NOT much greater than the distance between the speakers.

• A) 278 Hz
• B) 422 Hz
• C) 452 Hz
• D) 562 Hz
• E) 694 Hz

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Transformation

In genetics, the process by which genetic material is taken up by a cell from its surroundings, leading to a change in phenotype.

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Horizontal Gene Transfers are the movements of genetic material between organisms in a manner other than traditional reproduction, significantly contributing to genetic diversity and evolution.

DNA

DNA, short for deoxyribonucleic acid, transports the genetic codes necessary for the growth, evolution, functioning, and reproduction of all known organisms and a variety of viruses.

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