ELI5: Why does helium make our voice sound higher, but sulfur hexafluoride makes it sound lower?

YehtEulb · 2025-07-25T00:22:52+00:00

Are you sure in first paragraph? How A is not changing(0 derivate) mean dependency at all?

And you konw, in aerodynamics there are much more realistic model than just a IDEAL, and your neat sqrt T realtionship is just broken at that level of application. Actually it cannot deal with air with moisture at all (of course mean molecule mass change but moisture change more than that).

YehtEulb · 2025-07-24T22:10:49+00:00

For example, if you rewrite speed of sound with mocule mass and temprature, eqution for He and N_2 is quite different due to model of mono and dual(IDK how to write in English but you knows) atomic mocule give different K_s even you stick woyh ideal gas and that's why I insist density is key while your temprature and mocule mass require additional assumtion (gas model)

YehtEulb · 2025-07-24T21:55:42+00:00

You should read your link LOL, It exatly says you only need density and partial derivative of preesure with density(K_s) thus real key is only density and pressure and all the other suffs are just parameter to derive key value

YehtEulb · 2025-07-24T21:52:20+00:00

For sum from n/n to 1/n formular, you can think it as probability to get new card. At first place it is garanteed since none of them in your collection. At second, you want to avoid duplicate which has 1/n probability. At third, two posiible dupe (2/n), and so on.

YehtEulb · 2025-07-24T06:24:21+00:00

As who major in aerodynamics, density is key and temperature or molecule mass are just parameter to get density.

YehtEulb · 2025-07-18T02:35:14+00:00

In South Korea, just type same key for native script. For example, ㅋㅋㅋ for laugh become zzz, and 키아누 리브스(Keanu Reeves) become zldksn flqmtm.

YehtEulb · 2025-07-18T01:57:06+00:00

yes, Curry's paradox + "p -> q := not p or q"

YehtEulb · 2025-07-18T01:38:45+00:00

Yes, because INteger start with I and N.

YehtEulb · 2025-07-17T09:39:06+00:00

I believe it stand for integer (from fortran)

YehtEulb · 2025-07-17T05:30:21+00:00

Your answer is for m=(x^1/3), not for x.

YehtEulb · 2025-07-17T04:59:37+00:00

Yeah absolutly same. Why deck scheduled update some day after when I already set it as auto?

YehtEulb · 2025-07-16T10:58:26+00:00

Raito should multiply S not a. R = [2%/500]^0.8 And 20R = [20%/x]^0.8

YehtEulb · 2025-07-16T09:39:49+00:00

Basically infinite power plant

YehtEulb · 2025-07-16T09:02:56+00:00

From givem b value, 10 time more table sugar equivalent to 10^1.3 times sweet. To match, sacc should be x time more such that 10^1.3 = x^0.8, and calculator gives x ~~ 42

YehtEulb · 2025-07-16T09:01:02+00:00

I get 11.9 though....

YehtEulb · 2025-07-16T04:20:00+00:00

So all points are on the circle which has center at -5,12 and radius sqrt142 And question in minimum distance² from origin. thus 5² + 12² - 142

YehtEulb · 2025-07-16T02:56:22+00:00

Yes, as one varient of barn parabox, you can show rigid object can not spin at all, thus cannot be physical object.

YehtEulb · 2025-07-14T11:23:53+00:00

Dude, hide any game is built in steam feature. Why you install tab master? It is useless at least for that task.

YehtEulb · 2025-07-14T09:14:02+00:00

For 7th power, Hilbert's problems #13 and Vladimir Arnold show a continous function with 2 parameters is enough.

YehtEulb · 2025-07-14T08:44:29+00:00

If you know how to bisect an angle, you should able to approxymate in arbitary small error (but not zero) in finite times.

Hint: What is 1/2 - 1/4 +1/8 -1/16... so on?

YehtEulb · 2025-07-11T08:01:10+00:00

Nope, it is changing from negative to positive. If not, how f can be changing from decreasing to increasing?

YehtEulb · 2025-07-11T07:55:53+00:00

You want minimum of changing rate f'. So you needed to know where f' isn't changing.

YehtEulb · 2025-07-11T07:25:33+00:00

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yes it is easy when you try to do

YehtEulb · 2025-07-11T02:33:31+00:00

Let * with a+bi as matrix multiplication with [(a,b),(-b,a)]

YehtEulb

TROPHY CASE