|Nov3-07, 12:34 PM||#1|
i read in a book that when an electric current flow that the electrons move preety slow [maybe 1mm/s i'm not sure]
now i also know electricity travels at the speed of light (ideally) so that an electron c*1s away will take 1s to start moving after i close the circuit
so i was thinking about a newtons cradle
if the moving ball hits the next ball at say .05m/s and all the balls add up to .05m then obviously it wont take a full second for the last ball to move, so how fast does the "impulse"? move through the stationary balls . i've a feeling its the speed of sound (in the medium of the balls) is that right?
|Nov3-07, 12:46 PM||#2|
It is indeed the speed of sound.
|Similar Threads for: newtons cradle|
|Newtons cradle||Introductory Physics Homework||4|
|newtons cradle||Classical Physics||5|
|newtons cradle velocity||Classical Physics||3|
|newton's cradle||Classical Physics||2|
|Newton's cradle||General Physics||4|