Recent content by div4200

Thanks for your answer. If I may ask, could you tell me about what you job is like? What kinds of things do you do every day?

Hello all, I am a student at a major American university who has just finished his/her first year. I came in undecided on my major. The two that I was and still am considering are - a dual-major in Electrical Engineering and Physics - a dual-major in Computer Engineering and Physics With...

Ah I think I see now. So my method was correct, then? And isn't your h-bar actually supposed to be h since E = hv?

I just thought of something. What if I do, E = mc2 = hc/\lambda And so: \lambda = h/(mc) Plugging in the following values: h = 4.13566733 * 10-15 eV*s c = 2.99792458 * 108 m/s m = 9.1 * 109 eV/c2 I get \lambda \approx 1.4 * 10-16 m Is that correct? Thanks a lot.

Thanks. But I'm still somewhat confused. How can mass and length be related using dimensional analysis? I also read the article about Yukawa potential, but I'm not sure how to use it. I would think that you would set V = 0 , but that yields the solution r = ∞, which cannot be right. Thanks.

Homework Statement One of the mediators of the weak interactions is the Z boson, which has a mass of 91 GeV/c 2. Use this information to find an approximate value for the range of the weak interaction. Homework Equations This is the part that I am having trouble with. I don't know where to...

Homework Statement A certain artifact is found to have a carbon-14 activity of 0.12 Bq per gram of carbon. What is the age of the object? Homework Equations A = A(initial) * (1/2)^(t/h) where A = current amount A(initial) = initial amount t = time h = half-life (aka half-time) The Attempt...

Thanks.

Homework Statement Problem: "Find the kinetic energy of an alpha emitted during the alpha decay of Rn-220. Assume that the daughter Po-216, has zero recoil velocity." Homework Equations Ei = Ef The Attempt at a Solution BE = Binding Energy, KE = Kinetic Energy (BE of Rn-220) = (BE of...

I just figured it out actually. My problem was that I was using an equation in my textbook with the wrong values. Thanks!

Homework Statement Two copper conducting wires are separated by an insulating oxide layer. This layer acts as a square barrier of height 10 eV. Estimate the transmission coefficient for penetration by 7 eV electrons (a) if the layer thickness if 5 nm and (b) if the layer thickness is 1 nm...

Homework Statement A particle with mass M at rest decays into two particles, one with mass m1, and the other with mass m2. Use conservation of energy and momentum to show that: E1 = (M^2 + m1^2 - m2^2)(c^2) ________________________ 2M Homework Equations...

Hello everybody. I am having trouble deciding on my major. Right now it's narrowed down between a dual major in chemical engineering and physics OR a dual major in electrical engineering and physics. My primary interest is solid-state physics (superconductors, quantum properties of solids...

Thanks for this answer. So a dual-major would actually be good for grad school? Also, would it allow me to later study specialize in physics or engineering in grad school?

But would a school accept my dual-major program as valid for teaching physics even though I technically wouldn't have the physics degree?