Newton's formula for velocity of sound?
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Answer:
v = √E/√density(p) is the Newton's formulae
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According to Newton, when sound waves propagate in air, compression and rarefaction are formed. He assumed that the process is very slow and the heat produced during compression is given to surrounding and heat loss during compression is gained from surrounding. So the temperature remains constant and sound waves propagate through an isothermal process.
Derivation of Newton's Formula
v=√E
According to gas law (Boyle's law),
PV = constant
where, P = pressure
V = volume of air
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