# Velocity of sound in air Calculator

## Calculates the speed of sound in air.

 Temperature T ℃ Heat capacity ratio k air:1.403, He:1.66 Molecular mass M g/mol air:28.966, He:4 Velocity of sound c m/s = km/h = kn
 At 15 degrees C, the velocity of sound is about 340 m/s in air and 997 m/s in helium gas.$\normal\hspace{40}c=\sqrt{\large\frac{kRT}{M}}\\[10]\ heat\ capacity\ ratio\ (air)\hspace{5}k=1.403\\\ molecular mass\ (air)\hspace{10}M=0.028966kg/mol\\\ gas\ constant\hspace{67}R=8.314472\\\ absolute\ temperature\hspace{5}T=273.15+t^{\circ}C\\$

Velocity of sound in air
 [1-4] /4 Disp-Num5103050100200
[1]  2018/10/20 00:30   Male / 60 years old level or over / A retired person / Useful /
Purpose of use
T know distance from lightning strikes
[2]  2017/12/26 07:22   Male / 50 years old level / A retired people / Useful /
Purpose of use
Teaching for Airline Transport Pilot''s Licence
Comment/Request
Can we also have the answer in knots?
from Keisan
[3]  2013/02/04 13:10   Male / 50 years old level / An office worker / A public employee / Very /
Purpose of use
scientific (earth sciences)
[4]  2010/01/04 23:11   Male / More than 60 / Others / Very /
Comment/Request
Excellent. Kindly bring a 50 digit calculator in the market that does ALL the FUNCTIONS that this KEISAN website does.It will be a masterpiece calculator and you have the Technical knowledge and capacity to do it.Pl consider this suggestion seriously and go ahead.You deserve to manufacture the BEST Calculator in the world.

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