The velocity of sound in air is given by the equation where v is the velocity in meters per second and t is the temperature in degrees Celsius. Find the temperature when the velocity of sound in air is 395 meters per second. Round to the nearest degree. A. 7,528ºC B. 517ºC C. 117ºC D. 8,074ºC

Question

The velocity of sound in air is given by the equation where v is the velocity in meters per second and t is the temperature in degrees Celsius. Find the temperature when the velocity of sound in air is 395 meters per second. Round to the nearest degree. A. 7,528ºC	  B. 517ºC	  C. 117ºC	  D. 8,074ºC

hartnn · Answer

which equation ? 
you just to put v= 395 and find 't' from that equation.

anonymous · Answer

thats all it says

hartnn · Answer

you must be having an equation with you...

anonymous · Answer

attachment

hartnn · Answer

ok, then you may use this equation taken from wikipedia, 
v= 331.3 - 0.606 t 
just plug in v = 395 and find t=...?

anonymous · Answer

thats not one of the answers

hartnn · Answer

but its nearer to one...

anonymous · Answer

let v=speed of sound, t=temperature in Celcious scale.
v=331*sqrt(1+t/273.15)
=> t=273.15*[(v/331)^2-1]
put v=395, t=115.8408.....................
so nearest value is answer C