Two violinists, one directly behind the other, play for a listener directly in front of them. Both violinists sound concert A (440 Hz).
What is the smallest separation between the violinists that will produce destructive interference for the listener? Assume that the speed of sound is 343 m/s.
Answers: 3
Physics, 22.06.2019 06:30, haha81
Which of these statements is true? a. quarks pair with leptons to form protons and neutrons. b. quarks pair with bosons to form photons. c. quarks pair with photons to form protons and neutrons. d. quarks pair with other quarks to form protons and neutrons. e. quarks pair with electrons to form protons.
Answers: 1
Physics, 22.06.2019 11:00, sudotoxic
Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?
Answers: 2
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