A tuning fork vibrates at a frequency of 128Hz. At what tension would the lowest possible (fundamental) frequency of the string be made to vibrate by having the tuning fork nearby? (a) 870N (b) 1730N (c) 3470N (d) 6940N (e) 13880N
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- A sound wave in air has a pressure amplitude equal to 4.00 103 Pa. Calculate the displacement amplitude of the wave at a frequency of 10.0 kHz.A mother hawk screeches as she dives at you. You recall from biology that female hawks screech at 792 HzHz, but you hear the screech at 883 HzHz. How fast is the hawk approaching?The A string on a violin has a fundamental frequency of 430Hz. The length of the vibrating portion of the string is 35cm and has a mass of 0.35 g. Under what tension must the string be placed to obtain the desired frequency?
- A plano wire has a linear mass density of 4.55 x 10-3 kg/m. Under what tension (in N) must the string be kept to produce waves with a wave speed of 600.00 m/s?I NEED IT ASAP! One end of a horizontal hope is attached to a prong of an electrically driven tuning fork that vibrates the rope transversely at 150 Hz. The other end passes over a pulley and supports a 2.50-kg mass. The linear mass density of the rope is 0.05 kg/m. What is the wavelength in millimeters?A whistle of frequency 540 Hz moves in a circle of radius 60.0 cm at an angular speed of 15.0 rad/s.What are the (a) lowest and (b) highest frequencies heard by a listener a long distance away, at rest with respect to the center of the circle?
- What frequency is received by the observer "B" moving at 22 km/h away from a firetruck at rest which is emitting a steady 372Hz sound from its siren? The speed of sound on this day is 338 m/s. Observer frequency =A string with a mass density mu = 6.40e-03 kg/m is under a tension of F = 259 N and is fixed at both ends. One of its resonance frequencies is 622.0 Hz. The next higher resonance frequency is 777.5 Hz. What is the fundamental frequency of this string? Which harmonic does the resonance frequency at 622.0 Hz correspond to? (i.e. what is n at this frequency?) What is the length of the string? Now, suppose the same string is detached at one end and connected by a ring to a frictionless post, so that it can move freely. Find the wavelength of the first (fundamental) harmonic. What is the frequency of the third (n = 3) harmonic in this case?The lowest A (La) in a piano has a frequency of 27.5 Hz. If the tension in the string of length 2.00 m is 308 N and half the wavelength occupies the string. What is the mass of the cable?
- A guitar string has a mass per length of 2.33 x 10 kg/m and a tundamental frequency of 146.8 Hz when it is under a tonsion of 82 4N. The string breaks, and its owner has only a spare string of mass per length 6.61 x 10 kg/m.Suppose the strings on a violin are stretched with the same tension and each has the same length between its two fixed ends. The musical notes and corresponding fundamental frequencies of these two strings are G (196.0 Hz) and E (659.3 Hz). The linear density of the E string is 2.81E-4 kg/m. What is the linear density of the G string?An instrument has a lowest frequency of 40 Hz. The string has mass per unit length of 0.015 kg/m. Calculate the tension in the string.