Recent content by darondny

"In mechanics, an impact is a high force or shock applied over a short time period when two or more bodies collide. Such a force or acceleration usually has a greater effect than a lower force applied over a proportionally longer time period of time. The effect depends critically on the relative...

"If a force is not of constant magnitude over time, the impulse is the integral of the magnitude of the resultant force (F) with respect to time: J = (integral) Fdt ."-- wiki And is not an impact because is an elastic movement , is not like a hammer . In a sine wave we do not have a sudden...

I still can not understand how you , "klimatos" , have reached this conclusion "1.06 times the speed of sound" . If we say mean , we must to be sure that the "mean" value is over a big enough period of time . In a periodic movement we have the mean speed... zero! Is a back and forth motion ...

Last night , so I can sleep , came in my mind an old idea of mine : since the particles whom are involved in the 'business for propagation of a wave travel in a rectilinear motion without changing the mean position (+-X um ; no mass transportation by the wave) we will agree that the particle...

Ok... but could you explain , please , if you don't mind , in a rationalized manner why , the sound in air doesn't have a constant particle speed ? Or .. how many m/s for particle speed we will have in the case : 30Hz/20 degrees C/ X (Pa) ? P.S. : sophiecentaur , those mases with springs ...

Hello to everyone , I'm stuck also at this point with "sond velocity" vs "particle velocity" . Is verry clear that the particle doesn't have to move a lot , that being directly related to the energy of the sound wave ... But why , or better said .. isn't that true.. for sound waves in gases ...