Recent content by uchicago2012

Homework Statement A germ cell in the male part of a plant (anther) (n=2) produces 4 haploid pollen cells. Assume that the gene for flower color (F) is on chromosome 1 and the gene for leaf color (L) is on chromosome 2. If a plant contains two different alleles of the flower color gene (F...

NewMech: the newest one I tried that is also probably wrong, seeing as I am stuck aldrichchemica: MacMillan paper, in case anyone else can actually understand it

Homework Statement I'm trying to figure out the mechanism for a reaction catalyzed by MacMillan Generation 1 and 2 organocatalysts. Not going so well. I don't understand what role the organocatalyst plays in the reaction. I read a paper about MacMillan and I think it was saying that the...

Homework Statement In a lab we did, we verified Snell's Law of Refraction by measuring the index of refraction for water. We filled a plastic half-circle with water and drew a line normal to the flat side. We measured an angle 30 degrees from the normal line (called the incident ray). We...

Homework Statement 1. Why is the Wheatstone bridge measurement capable of so much greater accuracy than the measurement or resistance with voltmeters and ammeters, using R = V/I? and 2. R in this experiment is a resistance box and so is accurate to the nearest ohm. Is this uncertainty in R...

Hello, I'm working on a problem where I'm given V, the electric potential, and asked to find E, the electric field. So I took the partial derivatives and found Ex, Ey, Ez. But now I was wondering how to present this answer, since it is the components of the electric field and not the electric...

Homework Statement The work done by an external force on an electron as it moves from point A to point B is 6.3 × 10-14 J. If it was started from rest and had 3 × 10-14 J of kinetic energy when it reached B, what is the potential difference VB-VA? Homework Equations V = k (q/r) Delta V =...

Right, I see. So then Q = Ax2/2. But what does length L have to do with the integral? X is the distance from the central axis, so I don't see how to incorporate L into that.

Oh, I see. So I've found the charge, then Q = Bx. But then how do I go about finding the electric field? I can find the flux by dividing by e0 of course. But the flux = integral (flux * dA) which I'm not sure applies to this problem. Or I can say flux = E*A, which I've seen my book randomly do...

p(r) is density as a function of r. Sorry I switched the symbols, I'm used to using rho. So is r a constant then? I thought it was a variable, because it said A was a constant and B was the density, so I thought B varied in accordance with r, which would be the distance from the central axis...

Homework Statement (a) Calculate the electric flux through the hemispherical surface shown in the figure. (The surface is an open shell, with no bottom.) The electric field is uniform: E = E0 khat. (b) If the electric field is instead E = E0 ihat, what is the flux? Homework Equations...

Homework Statement Charge is distributed through an infinitely long cylinder of radius R in such a way that the charge density is proportional to the distance from the central axis: ß = A r, where A is a constant and ß is the density. (a) Calculate the total charge contained in a segment of...

Homework Statement Calculate the surface flux integral of F = 2xy xhat + (xz - 5xy2)zhat over the surface shown in the figure. Take n = k. See Figure Homework Equations Flux = Integral (Electric Field * dA) The Attempt at a Solution So from the figure the total area is obviously a2...

Homework Statement Charge is uniformly distributed along the x-axis with density ß. Use Gauss' Law to find the electric field it produces, and use this to calculate the work done on a charge Q that moves along the y-axis from y = a to y = b. Homework Equations Gauss' Law: e0 * electric...

I know A-B is constant pressure and B-C is constant volume. Thus, B-C does no work. But I know what the net work is. I need to know the net heat so I can figure out the change in internal energy and I don't know of any pertinent handy facts about constant volume or constant pressure...