How will the speed of a sound-wave change if the temperature of the medium rises?

Question

rachelg1456 · Answer

@pandeezie101

tkhunny · Answer

Why wouldn't it?

rachelg1456 · Answer

What do you mean?

tkhunny · Answer

This wasn't hard to find.

v = 331m/s + 0.6m/s/C * T

Looks like a direct cause to me.

rachelg1456 · Answer

I'm confused :(

tkhunny · Answer

T is the temperature of the medium.
Increase T by one degree and increase Speed of Sound by 0.6 m/s.

badhi · Answer

if you search for speed of sound equation itll give,

$$V = \sqrt{\frac{\gamma RT}{M}}$$ where T is temperature

rachelg1456 · Answer

oh so what you guys are saying is that it would change? that makes more sense now

rachelg1456 · Answer

So which answer will it be?

A) The speed will increase.
B) The speed will decrease.
C) The speed will not change.
D) The speed will initially increase and then return to its earlier value.

rachelg1456 · Answer

I think A?

farcher · Answer

In a gas the molecules interact via collisions.
The faster the molecules move, the shorter the time between collisions and so the faster the information, the sound wave, travels.

rachelg1456 · Answer

@farcher so which one is it?  ABCorD

badhi · Answer

and when the temperature increases the molecules move faster.. connect this with @Farcher 's answer ;)

rachelg1456 · Answer

Oh!!!! so it is A!

rachelg1456 · Answer

thanks so much!!! :))))

tkhunny · Answer

Think "Kinetic Energy".