The 15000*20 term is unneeded since your accounting for the loss in mass in the 85000*vf term. The question makes sense to me btw. Your first answer is right and it's easy too check if you think about the conservation of momentum. For momentum to be conserved means that the momentum after some...
Homework Statement
A particle is in the first excited state of a box of length L. Find the probability of finding the particle in the interval ∆x = 0.007L at x = 0.55L.
Homework Equations
P = ∫ ψ*ψdx from .543L to .557L
The Attempt at a Solution
Normalizing ψ gives ψ=√(2/L)sin(nπx/L)...
Homework Statement
1. The kinetic energy of emitted electrons depends on the frequency, not the number of photons.
2. The energy of the radiation is proportional to the wavelength.
3. The number of emitted electrons depends on the number of photons, not the frequency of the radiation.
4. The...