Recent content by atmega-ist

I have no words... You're exactly right. Two semesters of chemistry with EVERYTHING in mm and mL started a pretty bad habit of glossing over conversions. Sure is. I think I got a bit carried away with the ol' CTRL+V. Thanks so much for the second look (a.k.a...

I've got the answer to the problem but I'm one decimal place off from the back of the book and am suspecting a typo (no, lol... not that presumptuous...) the reason for the suspicion is that there's a zero after the answer where the units would go but this question is asking for a coefficient...

aaaaaaaaaaaaaaaaaaaaaaand now I feel like a REAL genius... tan is sin/cos... NOT cos/sin... long time since trig + reading too quickly + no sleep = embarrassment by simple math (and negative signs) sorry

Homework Statement A projectile is fired in such a way that that its horizontal range is three times its maximum height. What is the angle of projection? Homework Equations R = Vo2sin(2theta)/g H = (Vosin(theta)2/2g R = 3H Cancel Voo, g and sin(theta) to leave 4/3 tan(theta) =...

Homework Statement Volumes of 1, 5, 10 and 15mL .0024M K2CrO4 are added to separate flasks and then filled with enough .25M NaNO3 to make 100mL of solution each. I'm asked to calculate the [CrO4^2-] per flask. I assume that all of the K2CrO4 will dissociate and, since there is only 1mol...

I think I have it. In plugging in -2x for y in the original equation I get that x can be +/- sqrt(2) therefore y for x=sqrt(2) can be either -2sqrt(2) or sqrt(2) and y for x=-sqrt(2) can be either 2sqrt(2) or -sqrt(2). Upon substitution of all possible pairs into the derivative, I've...

Homework Statement Find the points (if any) of of horizontal tangent lines on : x2 + xy + y2 = 6 Homework Equations n/a The Attempt at a Solution So far I've concluded that I must find the points at which dy/dx = 0. I've solved for dy/dx and arrived at dy/dx = (-2x-y)/(x+2y)...