Recent content by dpowd

chrispat, The equations in your attempt are all correct statements in that you have appropriate expressions for the quantities vi, Ui - spring, UI - grav, etc. However, when are you declaring your initial values? That is, when during the experiment are you setting time = 0? That decision is...

Point G is entirely in the gaseous phase, but point E is straddling the interface between the liquid and gas phases, so it's not entirely a liquid. Point H, however... BTW - before somebody gives me grief for a bad chemical formula, NH4+ is technically the ammonium ion, where NH3 is the...

I don't think you're reading your phase diagram correctly. Any point that borders two phases represents a condition that allows NH4 to exist in both of those phases simultaneously. That the question specifically reads "liquid ammonia boiling completely away" means to me that they're looking for...

Husker, Yes, the problem is as simple as it looks. The big issue is determining the orientation of a wave that's been reflected from a fixed barrier vs that from a free barrier, which you have done correctly. Then, at a point where an incident pulse (of amplitude A) overlaps a reflected pulse...

Are you sure rho is not a constant? The way I read the problem is rho(sub-v) represents some total charge (although that notation would seem a bit unconventional) defined as a function of x, y, z, and some undeclared (but constant) rho. From that point of view, the integral really isn't as ugly...

DeanBH, the slope-intercept form of a line equation (y = mx + c) is only useful if you already have the y - intercept (the 'c' in the equation). If you have a point that is not the y - intercept, which is frequently the case in calculus problems, then the point - slope form of the line equation...