Recent content by ahhppull

Ok...Thanks!

I got the answer now, but by changing my calculator to radians when calculating sin(2n∏x/L). Am I suppose to use radian instead of degrees?

I still don't understand. I may have wrote something wrong. The part that you highlighted should be: (L/n∏)

Homework Statement What is the probability, P, of locating a particle between x = 0 (the left-hand end of a box) and x = 0.2 nm in its lowest energy state in a box of length 1.0 nm? Homework Equations Probability = ∫ψ2dx ψ = (2/L)1/2sin(n∏x) The Attempt at a Solution ψ2 =...

Homework Statement Write down the v=1 eigenfunction for the harmonic oscillator. Substitute this eigenfunction into the Schrödinger equation and show that the eigenvalue is (3/2)hν. Homework Equations The Attempt at a Solution I'm not really sure on how to to this, but here's...

Homework Statement Consider ψ (x) for a particle in a box: ψn(x) = (2/L)1/2sin(n∏x/L) Calculate the probability of finding the particle in the middle half of the box (i.e., L/4 ≤ x ≤ 3L/4). Also, using this solution show that as ''n'' goes to infinity you get the classical solution of...

Not sure if correct but here's what I did to find the concentration. 5.49 ppm = 5.49 micrograms/mL = 0.00549 grams/L 0.00549 grams/L /(55.845 grams/mole) = 0.000106 M 0.000106 M * 5 mL / 50 mL = 0.0000106 M EDIT : Also I just realized that the molar absorptivity of FeSCN is not given in the...

Homework Statement 2. A 5.00 mL aliquot of a solution that contains 5.94 ppm iron (III) is treated with an appropriate excess of KSCN and is diluted to 50.0 mL.What is the absorbance of the resulting solution at 580 nm in 2.50-cm cell? Homework Equations The Attempt at a Solution...

I got it now :)

Homework Statement F(x,y,z) = <2xy + ze^xz, x^2 +ze^yz, xe^xz + ye^yz + 2z> Homework Equations The Attempt at a Solutionf I know how to find the partial of F(x,y) but I don't know how to do it for F(x,y,z). How do I do this?

Honestly, I have no idea what to do, but here what I did. From (0,0) to (2,1) r(t) = (1-t)<0,0> + t<2,1> r(t) = <2t,t> x=2t y=t I found that the integral is from 0 to 1. dx/dt = 2 dy/dt = 1 ∫(x+2y)dx+(x^2)dy Then I set x as 2t and y as t into the equation...

Homework Statement Evaluate the line integral ∫(x+2y)dx+(x^2)dy, where C consists of the line segments from (0,0) to (2,1) and (2,1) to (3,0) Homework Equations The Attempt at a Solution I'm unsure of what to do. I did (1-t)r0 + t(r1) for (0,0) to (2,1) and (2,1) to (3,0). I...

So I set 1 = 3u -2v and 2 = u+v. Then, I do 2-v=u and substitute u into the first equation? I get (1,1)

I don't understand. How would I do this then?

Homework Statement Let D be the triangular region in the xy-plane with the vertices (1, 2), (3, 6), and (7, 4). Consider the transformation T : x = 3u − 2v, y = u + v. (a) Find the vertices of the triangle in the uv-plane whose image under the transformation T is the triangle D. (b)...