Speed of Sound in Air Name:_____________________________ Partner(s):___________________________ Course: ________________ Time:_______ Purpose: Determine the of sound in air using different methods. A. Temperature Method Apparatus: PC with interface and temperature sensor. Theory: Speed of sound in air (in m/s) at temperature T (in Kelvin) is given by; where = 1.40 (ratio of specific heats for air), γ m = 4.8 x 10-26 kg (average molecular mass of air), and k = 1.38 x 10-23 J/K (Boltzmann constant). Alternatively R=8.314 J/(mole.K), M=28.9x10-3 kg/mole As a 3rd and simple method V=( 331.6+.0.607tc )m/s 331.6 m/s is the speed of sound at 00C The equation says for every degree Celsius rise from 0C the sound speed icreses by .607. Procedure: 1) Measure the room temperature using a temperature sensor, interface, and PC and calculate the speed of sound.
Speed of Sound in Air Name:_____________________________ Partner(s):___________________________ Course: ________________ Time:_______ Purpose: Determine the of sound in air using different methods. A. Temperature Method Apparatus: PC with interface and temperature sensor. Theory: Speed of sound in air (in m/s) at temperature T (in Kelvin) is given by; where γ = 1.40 (ratio of specific heats for air), m = 4.8 x 10-26 kg (average molecular mass of air), and k = 1.38 x 10-23 J/K (Boltzmann constant). Alternatively R=8.314 J/(mole.K), M=28.9x10-3 kg/mole As a 3rd and simple method V=( 331.6+.0.607tc )m/s 331.6 m/s is the speed of sound at 00C The equation says for every degree Celsius rise from 0C the sound speed icreses by .607. Procedure: 1) Measure the room temperature using a temperature sensor, interface, and PC and calculate the speed of sound.
Speed%20of%20sound%20with%20Pasco.docx