Recent content by osker246

I am feeling a little stupid asking this considering I am about to graduate with my BS in chemistry. But I have never given this much thought, nor do I remember learning this and I can't figure out a proper explanation. I am sure I am overlooking a simple detail, but I can not figure it out...

Ahh yes I forgot to convert pressure into Pascals. Thanks for the heads up.

Homework Statement To a very good approximation, ammonia obeys the Bertholet equation of state, which readsPV=nRT+\frac{9}{128}(\frac{nRTc}{Pc})(1-6\frac{Tc^2}{T^2})Pa)Suppose we have 500 grams of ammonia under a pressure of P=3.04 atm and at T=323K. Calculate the volume of ammonia according...

So does this mean my answer is 2*(\frac{-2KT\pi}{4\kappa})1/2?

Thanks for the reply. I did see that it was an even function, that's why I changed my limits of intergration to 0 to +infinity and multiply the answer by two. But the integral of the standard function doesn't keep X as a variable. So how do I evaluate this integral with my limits of...

Homework Statement evaluate \inte^(\frac{\kappa*x^2}{2KT})dx with limits of integration from -infinity to +infinity using the standard form \inte^(-C*x2)dx = (\frac{\pi}{4C})1/2 with limits of integration from 0 to +infinity. Note κ, k, and T are constants. In the standard form c indicates a...

So I think I got it. So recognize that a=pi/L and plug it and evaluate the integral with the limits of intergration I have. Its been way to long since calc II, I vaguely remember the standard form stuff now. If memory serves me right, the standard form eqns. would of been in the back of the...

Homework Statement Evaluate the integral; \frac{2}{L}\intsin2(\frac{\pi*x}{L})dx from \frac{2a}{3} to \frac{a}{3}. Where L is a constant, using the standard form \intsin2(ax)dx=\frac{x}{2}-\frac{1}{4a}sin(2ax)+C, where a and C are constants. The Attempt at a Solution Ok, so I am...

This really isn't a homework question, I just need help understanding some concepts. For my physics course, we have a section called "tutorial" where we work out of a book answering questions. Now I am not quite sure how to answer this one. Refer to the image below for the questions...

Ok, so I figured out my mistake I forgot to incorporate r^2 Fd=(1/2)(pi^2)(rho)V^2. But one thing I don't understand from what I read online from a forum is drag force is buoyant force - Weight. I don't understand this and my textbook mentions nothing of this. Does anybody know of some resources...

Hi yinx, Thanks for the reply, I did a little more studying on archimedes principle and the concept does make more sense. So I was able to figure out the answer to part a. Turns out the formula was Fb-Wb=ma, where Fb=rhoair*V*g. The answer ended up being 72 m/s^2. I also forgot to include...

Homework Statement your team is in charge of launching a large helium weather balloon that is spherical in shape, and whose radius is 3.0 m and total mass is 17.5 kg (balloon plus helium plus equipment). (a) What is the initial upward acceleration of the balloon when it is released from...

Alright! I got it, I guess the hardest part of the problem was actually understanding how acceleration could be broken up into components. But it makes perfect sense now. Thanks a bunch! I appreciate the help.

Okay, so I am thinking my FBD is incorrect. Is what I had drawn correct or incorrect?

Hi Alibeg, First off thank you for the lengthy reply! The answers I listed down below are the correct answers to my homework, the answers I am calculating are different. I am using approach number one as you described. But I did not set acceleration in the y component equal V^2/r, I set...