5. Write Newton's formula for velocity of sound in air. What did laplace suggest to
correct the formula. Write the corrected formula and specifyings the meanings of
the symbols used.
[2]
Answers
Answer:
hlo ir answer
Explanation:
v=√Pρ≈280m/s
We know that the speed of sound in the air medium is around 332m/s. The value obtained by Newton's formula was 280m/s which is not accurate. To overcome this difficulty, Laplace conducted a few experiments and came up with a correction and hence derived Laplace Correction Formula.
Explanation:
The Newton-Laplace (NL) formula of sound velocity is shown being invalid at high pressure, and a modified formula is derived based on the Rankine-Hugoniot relations. The derivation shows that the transmission of sound should be a process satisfying the energy conservation condition instead of the adiabatic condition in the NL formula. The agreement of equations of state for metallic liquids deduced from sound velocity data through the modified formula with the direct experimental P-VP-V data is evidently improved as compared with that deduced through the NL formula.