Question

. If the air pressure is doubled, the speed of sound
A) Decreases by 0.61 m/s B) Increases by 0.61 m/s
C) Increases by 61 cm/s D) Remains unchanged

Answer 1

D, it only relies on temperature in air.

Answer 2

actually temperature and pressure is directly related.. so you decide. when you go really high up in the sky.. very little air pressure. therefore lower temps..

Answer 3

So Only temperature is a factor Nothing Else So It Remains Unchanged

Answer 4

Well, density of air should slow it down a bit..

Answer 5

Speed of sound only depends on temp

Answer 6

Thats what you said

Answer 7

Should slow it down, but unsure if it's .61m/s.

Answer 8

oK sO nOW yOU sAY It slows it Down :) Or Are You Still Unsure ??

Answer 9

@kropot72

Answer 10

A. finalanswer.

Answer 11

please justify your final answer ? @jenxin

Answer 12

The factors which speed of sound depend on are Distance, pitch, volume, and temperature.

Answer 13

Increased air pressure means that the particles in the air get closer and form a sort of barrier

Answer 14

Because speed of sound solely depends on temp's, in dry air; notice how nice and warm it is on the surface of the earth.. (thats cause air is dense) but in the stratosphere of the earth, air is sooooo super thin, that it's freezing. use the equation

http://en.wikipedia.org/wiki/Speed_of_sound#Practical_formula_for_dry_air

oh, you're right, it should get faster when it's more dense.. just noticed my mistake, thought it was a - sign.

Answer 15

So it's either B or C, my bad.

Answer 16

No Problem @jenxin

Answer 17

When it is hot it is easy for sound to travel

Answer 18

Should be C. I think.

Answer 19

So When it is cold It will be difficult because it has to break the sound barrier to move forward so yeah its A

Answer 20

Yes, but if density of air is doubled, it should be warmer. but this really really depends on the current temps -_- and the density, stupid question.

Answer 21

Well its A tricky Question :D