<!--Copyright © 1999-2000 the12volt.com -->
<!--If you use this script, you must include this copyright notice -->
<!-- (((14630000*(D/2)*(D/2)) / ( Fb*Fb*Vb*1728)) - (1463*(D/2))) -->
<!-- ((14630000*(d/2)*(d/2))/((f*f*v*1728)-(1463*(d/2)))) -->
<!-- 
function volt(number,X) {
// rounds number to X decimal places, defaults to 2
X = (!X ? 5 : X);
return Math.round(number*Math.pow(10,X))/Math.pow(10,X);
}
function computeP(obj) {
with (Math) {
d=eval(obj.diameter.value);
v=eval(obj.bvolume.value);
f=eval(obj.tfreq.value);
obj.Lgth.value = volt  ((14630000*(d/2)*(d/2)) / (f*f*v*1728)) - (1.463*(d/2) );
}	
}
//-->