A sonometer wire of length 0.73 m emits a sound note of frequency 435 Hz. If its length is shortened to 0.725 m, how many beats second will be produced with a tuning fork of per frequency 435 Hz ?
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- Answer the following step by step: A)The range of frequencies audible to humans is from about 20 Hz to 20kHz. Assuming that the speed of sound in air is 343 m/s, the wavelength of a 20 kHz sound is: a) 58 cm b) 1.8 cm c) 6860 km d) 400 km B) A 640 Hz tuning fork is placed on the open edge of a resonance tube of initial length L = 0 cm. Assume that the speed of sound is 330 m/s. As the tube becomes longer, successive whistles of maximum intensity (for example, from L1 to L3, or from L3 to L5, etc.) are heard at intervals L. What is the value L. Note: Be careful with the units a) 51.7 cm b) 194 cm c) 19.4 km d) 25.8 km e) 12.9 cm C) In a tube that has one end closed (the other open), with a fundamental frequency of 256 Hz, which of the following frequencies cannot produce resonance? a) 5.12 kHz b)There is no restriction to any frequency c) 19.7 kHz d) 768 Hz e) 1.28 kHzAn 6 hour exposure to a sound intensity level of 95.0 dB may cause hearing damage. What energy in joules falls on a 0.900 cm diameter eardrum so exposed?(a) At T=12oC, how long must an open organ pipe be to have a fundamental frequency of 300 Hz? (b) If this pipe is instead filled with helium at 20oC , what is its fundamental frequency?
- An 6 hour exposure to a sound intensity level of 95.0 dB may cause hearing damage. What energy in joules falls on a 0.600 cm diameter eardrum so exposed?Hello, Can I please have help regarding this problem ? Thanks. Suppose that the clock on our lecture room has a minute-hand length of 10 cm.(Use a coordinate system with the origin at center of clock and +x axis along the3PM direction and the +y direction along the 12PM direction). From the 12 to 8mark, for the tip of the minute hand:a) Sketch a vector diagram labeling ri, rf, Δr, Vi, Vf, and ΔV.b) Calculate the displacement vector in unit-vector notation.c) Calculate the average velocity vector in unit-vector notation.d) Calculate the average acceleration vector in unit-vector notation.e) Calculate magnitude and direction of the average acceleration vector.f) Calculate the magnitude and direction of the total acceleration of the tip ofthe minute hand at the 6 mark.