The interval between the flash of lightning and the sound of thunder is 2 seconds when the temperature is 10°C. How far is the storm if the velocity of sound in air at 0°C is 330 m/s
A man standing at one of a closed corridor 57 m long below a short blast on a whistle. He found that the time from the blast to the sixth echo was 2 seconds. If the temperature was 17°C, what was the velocity of sound at 0°C?
A source of the sound of frequency 512 Hz emits waves of wavelength 670 mm in the air at 20°C. What is the velocity of sound in air at this temperature? What would be the wavelength of sound from the source in the air at 0°C?
When a detonator is exploded on a railway line, an observer standing on the rail 2 km away hears two sounds. What is the time interval between them? (Young's modulus of steel = 2 x 1011 Nm-2, density of steel = 8 x 103 kgm-3, γ=1.4, atmospheric pressure = 105 Nm-2)
On a stormy day, a boy observes a lightning flash which is followed by thunder 3 sec later. How would you estimate the distance of the lightning strike from the boy? (Given velocity of sound on that day = 332 m/s, velocity of light c = 3x108 m/s)
A source of frequency emits a wave of wavelength 64.5 cm in the air at 27°C, What would be the velocity of sound at 0°C?
A source of sound produces a note of 512 Hz in the air at 17C with a wavelength of 66.5 cm. Find the ratio of molar heat capacities at constant pressure to constant volume at NTP. Densities of air and mercury at NTP are 1.293 kg.m3 respectively.
Calculate the bulk modulus of a liquid in which longitudinal waves with a frequency of 250 Hz have the wavelength of 8m and the density of the liquid is 900 kg/m^3.
In a resonance air column apparatus, the first and second resonance positions were observed at 18cm and 56cm respectively. The frequency of the tuning fork used was 480 Hz. Calculate the velocity of sound in air and end correction of the tube.
At what temperature, the velocity of sound in air is increased by 50% to that at 27°C?
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