Homework Statement
Consider a one-dimensional metal wire with one free electron per atom and an atomic spacing of ##d##. Calculate the Fermi temperature.
Homework Equations
Energy of a particle in a box of length ##L##: ##E_n = \frac{\pi^2 \hbar^2}{2 m L^2} n^2##
1D density of states...
Homework Statement
Solve ##\Delta\phi = -q\delta(x)## on ##\mathbb{R}##.
Correct answer: ##\phi = -\frac{q}{2}|x| + Ax + B##
Homework Equations
The Attempt at a Solution
In one dimension the equation becomes ##\frac{d^2 \phi}{d x^2} = -q\delta(x)##. We integrate from ##-\infty## to ##x## to...
Homework Statement
The wave function of a particle of mass m confined in an infinite one-dimensional square well of width L = 0.23 nm, is:
ψ(x) = (2/L)1/2 sin(3πx/L) for 0 < x < L
ψ(x) = 0 everywhere else. The energy of the particle in this state is E = 63.974 eV.
1) What is the rest energy...
Homework Statement
A 747 Jumbo Jet must reach a speed of 290km/h by the end of the runway to lift off. The 15L-33R runway at Toronto International Airport is 2,770 meters long. The main Toronto Island Airport runway 08-26 is 1216 meters long. Assuming the jet has a constant acceleration, for...
To simplify my question I would like to use a random example (although, the issue holds regardless of the numbers you pick). Suppose two objects collide (head-on) in one dimension. The initial parameters are as follows (units are irrelevant):
m1=1;m2=2;u1=3;u2=-4;
Also, suppose that exactly...
1. My Conceptual Questions (5) is at 3.
CONSIDER:
Case 1: two dissimilar slabs of material (say slab 1 and slab 2) connected in series (bonded at their interface). There is a temperature difference: T1 @ slab1 and T2 @ slab2.
Case 2: two dissimilar slabs of material bonded together, i.e...