(a)
To Compute:The average occupancy of a single-particle state and the probability of the state containing
(b)
To Compute: The average occupancy of a single-particle state and the probability of the state containing
(c)
To Compute: The average occupancy of a single-particle state and the probability of the state containing
(d)
To Compute: The average occupancy of a single-particle state and the probability of the state containing
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Chapter 7 Solutions
An Introduction to Thermal Physics
- A simple model of a radioactive nuclear decay assumes that a-particles are trapped inside a well of nuclear potential that walls are the barriers of a finite width 2.0 fm and height 30.0 MeV. Find the tunneling probability across the potential barrier of the wall for a-particles having kinetic energy (a) 29.0 MeV and (b) 20.0 MeV. The mass of the a -particle is m=6.641027kg.arrow_forwardIf the ground state energy of a simple harmonic oscillator is 1.25 eV, what is the frequency of its motion?arrow_forwardCheck Your Understanding A proton with kinetic energy 1.00 eV is incident on a square potential barrier with height 10.00 eV. If the proton is to have the same transmission probability as an electron of the same energy, what must the width of the barrier be relative to the barrier width encountered by an electron?arrow_forward
- Can we measure the energy of a free localized particle with complete precision?arrow_forwardFor a particle in cubic box, what is the degeneracy of the energy level 81 times the ground state energy?arrow_forwardAn electron is trapped in a one-dimensional infinite well of width 250 pm and is in its ground state.What are the (a) longest, (b) second longest, and (c) third longest wavelengths of light that can excite the electron from the ground state via a single photon absorption?arrow_forward
- An electron is bound in a square well of width 1.05 nm and depth U0=6E∞, where E∞ is the ground-state energy for an infinitely deep potential well.If the electron is initially in the ground level, E1=0.625E∞ , and absorbs a photon, what maximum wavelength can the photon have and still liberate the electron from the well?arrow_forwardConsider the wave function phi(x) = A sin(kx) where k = 2pi/lambda and A is a real constant. (a) What are the values of x that have the highest probability of finding the particle described by this wave function? (b) What are the values of x that have zero probability of finding the particle described by this wave function?arrow_forwardAn electron with kinetic energy E = 3.10 eV is incident on a barrier of width L = 0.230 nm and height U = 10.0 eV (a) What is the probability that the electron tunnels through the barrier? (Use 9.11 10-31 kg for the mass of an electron, 1.055 ✕ 10−34 J · s for ℏ, and note that there are 1.60 ✕ 10−19 J per eV.) b) What is the probability that the electron is reflected? What If? For what value of U (in eV) would the probability of transmission be exactly 25.0% and 50.0%? c) 25.0% d) 50.0%arrow_forward
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