Establish Newton's formula for velocity of sound in an elastic medium. What is the Laplace's correction?
Answers
Answered by
12
heyy!! here ur answer...
Newton assumedthat when sound propagates through air, temperature remains constant (i.e. the process is isothermal).So, bulk modulus of elasticity B = BT= p(isothermal bulk modulus BT of a gas is equal to its pressure).Therefore at NTPp = 1.01 × 105 N/m2and ρ = 1.3 kg/m3= 279 m/sThe experimental value of v in air is 332 m/s at NTP. This discrepancy was removed by Laplace...☺
Newton assumedthat when sound propagates through air, temperature remains constant (i.e. the process is isothermal).So, bulk modulus of elasticity B = BT= p(isothermal bulk modulus BT of a gas is equal to its pressure).Therefore at NTPp = 1.01 × 105 N/m2and ρ = 1.3 kg/m3= 279 m/sThe experimental value of v in air is 332 m/s at NTP. This discrepancy was removed by Laplace...☺
Similar questions