Created by StemPy LabA wire long, with a mass of per metre, is stretched between two fixed points with a tension of . Its fundamental frequency, in hertz, is ____.
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← Six resistors of 12 Ω each are joined to form the sides of a regular hexagon, as shown in the figure. The equivalent resistance between two neighbouring corners A and B, in ohms, is ____.An ideal (Carnot) refrigerator keeps its inside at -23°C in a kitchen at 27°C. The work it needs to remove 1000 J of heat from the inside, in joules, is ____. →
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