A tuning fork of 512 Hz is used to produce resonance in a resonance tube experiment. The level of water at first resonance is 30.7 cm and at second resonance is 63.2 cm. The error in calculating velocity of sound is (a)204.1 cm/s (b) 58 cm/s (c) 110 cm/s (d) 280 cm/s
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- Consider a string of length 50 cm fixed at both ends. It is plucked or struck at t=5s. Assume the speed of sound is 343 m/s. The fundamental frequency is f1 = 34.3 rad/s A B с D f1 = 646 Hz f1 = 343 Hz f1 = 34.3 HzStanding at a crosswalk, you hear a frequency of 520 Hz from the siren of an approaching ambulance. After the ambulance passes, the observed frequency of the siren is 436 Hz. Determine the ambulance's speed from these observations. (Take the speed of sound to be 343 m/s.) m/sA convertible moves toward you and then passes you; all the while, its loudspeakers are producing a sound. The speed of the car is a constant 13.5 m/s, and the speed of sound is 344 m/s. What is the ratio of the frequency you hear while the car is approaching to the frequency you hear while the car is moving away?
- You hear a sound of (5.6x10^1) decibels. What is the intensity? Give your answer in microwatts/m2 to 2 sf. Assume the threshold of human hearing is 1.0x10-12 W/m². Use two significant figures for your answer. Note: 1 µW = 1×106 W Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: х10 AnswerCalculate the frequency of a sound wave in helium if its displacement amplitude is 3.6 x 10-10 m and the pressure amplitude is 7.2 x 10-5 N/m². The density of helium is 0.166 kg/m³ and the speed of sound in helium is 2660 m/s. Answer in units of Hz.What is the speed of sound in substance X if a note produced at 440Hz has a wavelength of 14.8 m?
- The speed of sound in a solid medium is given by ?=?/?‾‾‾‾√v=E/ρ where ?E is the value of Young's modulus for the solid and ?ρ is the density. A sound wave travels at 5.8×1035.8×103 m/s in a steel rod of length 1.11 m, diameter 2.0 cm and mass 7.0 kg. Use the data to determine the value of the Young's modulus for steel. Give your answer in giga-pascal (GPa, 109 Nm-2).An ultrasonic flow meter for measuring flow rate in a square channel uses two transducers that are placed at x = 1.35 m (Transducer 1) and x = 1.75 m (Transducer 2). x is measured along the length of the channel. The width of the channel is 0.3 m. The speed of sound in blood is 1500 m/s and the flow rate is 1.2 m3/s. Find the transit time (in μs) of the wave from Transducer 1 to 2 and the transit time (in μs) of the wave from Transducer 2 to 1.People with good hearing can perceive sounds as low in level as −6.62 dB at a frequency of 3000 Hz. What is the intensity of this sound in watts per meter squared?