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Question

Write newton's and Laplace formulae for speed of sound.


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Solution

  1. Newtons formulae.

Newton's formula for the velocity of sound in a gas is v = √P/d

where P is the pressure of the medium.

d is the density of the medium.

2. Laplace formulae.

Laplace formulae for the velocity of sound in a gas is v = √rP/d

where P is the pressure of the medium.

d is the density of the medium.

r = Heat capacity at constant pressure/heat capacity at constant volume. = Cp/Cv.


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