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... *No class on Wednesday 4/27 (Reading day) *One question from the midterm will be asked in the final exam. 1. Normal magnetic materials lose their magnetic property at ~500 °C. For a location with heat flux ~50 mW/m2 and thermal conductivity ~2.5 Wm-1K-1, estimate the depth when induced magnetism dim ...
... *No class on Wednesday 4/27 (Reading day) *One question from the midterm will be asked in the final exam. 1. Normal magnetic materials lose their magnetic property at ~500 °C. For a location with heat flux ~50 mW/m2 and thermal conductivity ~2.5 Wm-1K-1, estimate the depth when induced magnetism dim ...
Homework 3
... (a) Draw the energy band diagram for the 0 ≤ x ≤ L region specifically showing Ec, EF, Ei, and Ev on your diagram. Explain how you arrived at your diagram. (b) Make a sketch of the ξ-field inside the region as a function of position, and compare the value of ξ at x=L/2. (c) Is the built-in electric ...
... (a) Draw the energy band diagram for the 0 ≤ x ≤ L region specifically showing Ec, EF, Ei, and Ev on your diagram. Explain how you arrived at your diagram. (b) Make a sketch of the ξ-field inside the region as a function of position, and compare the value of ξ at x=L/2. (c) Is the built-in electric ...
1) Velocity is a vector quantity that has both magnitude and direction
... Away, Blue Come and Play. 95) In order for a standing wave to be produced there must be two (2) waves traveling in opposite directions that have the same amplitude and frequency. 96) Period is defined as the time for ONE cycle or wavelength. 97) When 2 waves interfere with one another they will cont ...
... Away, Blue Come and Play. 95) In order for a standing wave to be produced there must be two (2) waves traveling in opposite directions that have the same amplitude and frequency. 96) Period is defined as the time for ONE cycle or wavelength. 97) When 2 waves interfere with one another they will cont ...
WORK ENERGY THEOREM
... According to the work-energy theorem, the net work on an object causes a change in the kinetic energy of the object. The formula for net work is net work = change in kinetic energy = final kinetic energy - initial kinetic energy. The work W done by the net force on a particle equals the change in th ...
... According to the work-energy theorem, the net work on an object causes a change in the kinetic energy of the object. The formula for net work is net work = change in kinetic energy = final kinetic energy - initial kinetic energy. The work W done by the net force on a particle equals the change in th ...
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... This corresponds to cyclotron resonance or in case, l = 0, to the Landau resonance, where the particle speed matches the phase speed. The Doppler-shifted frequency of a resonant particle is a multiple harmonic of their gyrofrequency --> constant electric field (in a circularly polarized wave). --> a ...
... This corresponds to cyclotron resonance or in case, l = 0, to the Landau resonance, where the particle speed matches the phase speed. The Doppler-shifted frequency of a resonant particle is a multiple harmonic of their gyrofrequency --> constant electric field (in a circularly polarized wave). --> a ...
763333A SOLDID STATE PHYSICS Exercise 1 Spring
... Estimate the relative magnitude of the currents in a forward- and reverse biased n-p junction diode when the applied voltage is 0.5 eV. 2. Matrials for a LED and a solar cell We study a light emitting diode where the semiconductor material is a) Si, b) Ga0.7 Al0.3 As or c) In0.3 Ga0.7 N. The energy ...
... Estimate the relative magnitude of the currents in a forward- and reverse biased n-p junction diode when the applied voltage is 0.5 eV. 2. Matrials for a LED and a solar cell We study a light emitting diode where the semiconductor material is a) Si, b) Ga0.7 Al0.3 As or c) In0.3 Ga0.7 N. The energy ...
Part One: Light Waves, Photons, and Bohr Theory A. The Wave
... It is impossible to measure both the velocity and position of an e- simultaneously to an arbitrarily high degree of precision. Therefore, cannot view the e- as following a precise trajectory around the nucleus. ...
... It is impossible to measure both the velocity and position of an e- simultaneously to an arbitrarily high degree of precision. Therefore, cannot view the e- as following a precise trajectory around the nucleus. ...
Density of states
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In solid-state and condensed matter physics, the density of states (DOS) of a system describes the number of states per interval of energy at each energy level that are available to be occupied. Unlike isolated systems, like atoms or molecules in gas phase, the density distributions are not discrete like a spectral density but continuous. A high DOS at a specific energy level means that there are many states available for occupation. A DOS of zero means that no states can be occupied at that energy level. In general a DOS is an average over the space and time domains occupied by the system. Localvariations, most often due to distortions of the original system, are often called local density of states (LDOS). If the DOS of an undisturbedsystem is zero, the LDOS can locally be non-zero due to the presence of a local potential.