Determining the fundamental frequency
Two identical piano wires have a fundamental frequency of 485 Hz when kept under the same tension. What fractional increase in the tension of one wire will lead to the occurrence of 4 beats/s when both wires oscillate simultaneously?
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A 280 g glider is pushed toward it from the far end of the track at a speed of 120 cm/s. It collides with and sticks to the 410 g glider. What are the amplitude and period of the subsequent oscillations?
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Batteries are rated in terms of ampere-hours (A h). For example, a battery that can produce a current of 3.00 A for 5.00 h is rated at 15.00 A h. (a) What is the total energy stored in a 9.0-V battery rated at 49.0 A h?
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Determine the peak wavelength of the blackbody radiation emitted by the average person. In what region of the electromagnetic spectrum is this wavelength found?
A 60 kg figure skater with her arms outstretched spins on one skate at one revolution per second. By treating her body as a vertical cylinder, and each arm as a thin rod stuck out from the centre of the cylinder, estimate her rate of rotation if
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