Recent content by STJ

Homework Statement Consider the following. (a) For a hydrogen atom making a transition from the n = 4 state to the n = 3 state, determine the wavelength of the photon created in the process. (Already solved this, 1.86x10^3 nm) (b) Assuming that the atom was initially at rest...

I swear I think to hard sometimes. Thanks. And as n/(n+1) n →∞ = 1 R=1/3, Interval of convergence will be [-1/3, 1/3]

Homework Statement Find interval of convergence and radius of convergence of the following infinite series. Series from n=1 to infinity ((-3)^n * x^n) / (n*(n)^1/2)Homework Equations Ratio testThe Attempt at a Solution I've started with the ratio test and end up getting 3xn^(3/2) /...

There has got to be a faster way to do that problem. Doing this during a 1 hour exam would take most of my time. There is no simpler way to solve this problem?

It seems I did forget about that. After looking at this for a minute, how is it possible to solve (1963309 + 1094x + x^2)^.5 - (1728109 + 506 + x^2)^.5 = 2.5w for x? I don't see any way of solving that for x, so I guess I have to use some formulas or something? EDIT: would Ydark = Ltan(theta...

Homework Statement Two radio antennas separated by d = 294 m as shown in the figure below simultaneously broadcast identical signals at the same wavelength. A car travels due north along a straight line at position x = 1 290 m from the center point between the antennas, and its radio...