Solid Definition and 1000 Threads

My confusion isn't exactly with a homework problem, but more with an example that is key to understanding a homework problem. So I am posting here anyway. 1. Homework Statement The example is of an Einstein solid, with N=3 oscillators. The book lists the multiplicity of each macrostate, with...

Homework Statement Find the volume of the solid bounded by the cylinder y^2+z^2=9 and the planes x=0, y=0, z=0, and 2x+y=2. Homework Equations None. The Attempt at a Solution This is double integral problem. I know how to find the double integral but I don't know how to set it up. How do I...

Homework Statement Find the volume of the solid generated by revolving the described region about the given axis: The region enclosed above by the curve https://webwork.math.uga.edu/webwork2_files/tmp/equations/23/88cfb3fea3d8c8579f5a0608e8bd751.png, below by the...

Can anyone please recommend sources for questions and problems with soultions related to Solid State Physics I course. For all range of topics from crystal structures up to semiconductors introduction (by Kittel). Thank you.

Hi. I plan on being an exchange student at Berkeley next year. I cannot find any course description for this course, I only find the description for 141A+141B: http://general-catalog.berkeley.edu/catalog/gcc_list_crse_req?p_dept_name=Physics&p_dept_cd=PHYSICS 141A. Solid State Physics. (4)...

Homework Statement internal diameter of a hollow shaft is two third of its external diameter .if it is melted and new solid shaft is made.what would happen to the shaft resistance of torsion. in percentage? Homework Equations as i know T/j=G*angle of twist/length. torsional...

Homework Statement derive an equation for the solid angle for a Rutherford scattering detector given a detcor window area of A and a distance to the detector of D for some scattering angle \phi given that d\Omega =2\pi sin\phi d\phi Homework Equations d\Omega =2\pi sin\phi d\phi A=Dd\phi The...

When you add impurity atoms to a material, the yield strength often increases by a process known as solid solution hardening. This is because the impurity atoms create a barrier to dislocation motion. The literature describing this phenomenon dates back to the 1960s with some famous papers by...

Background: Using Biot-Savart law we proved that for a closed loop with current ##I##, the magnetic field at a point P was equal to ##\vec{B}=-\frac{\mu_{0} I \nabla{\Omega}}{4 \pi}## where ##\Omega(x,y,z)## is a function of the position of P that represents the solid angle at which the loop is...

I would like to know what is the difference between a solid state physicist and a materials engineer. I mean, do they end up doing the same kind of job or research? If they both have the same purpose, how can they do it having different backgrounds? Which preparation is better for the purpose?

I have a "bending stress" question, which is causing me "actual stress"... I have a solid 30m Aluminium shaft, which I need to replace with an equivalent hollow shaft, but I am having difficulty in calculating the internal and external diameters. The solid shaft diameter is 0.118m, and all I...

In deriving the pressure of a gas, my book states that 'if all molecules are equally likely to be traveling in any direction, the fraction whose trajectories lie in an elemental solid angle dΩ is dΩ/4π'. This initally made sense to me, but then thinking about it, I wrote dΩ=sinθdθdφ and this...

My goal is to use a single signal to do two things at the same time...when DC signal is applied turn transistor1 off and turn transistor2 on. Then when signal is not applied transistor1 returns to on and transistor2 returns to off. Frequency will be no more than 60Hz. What would this circuit...

Say you have a flat resistor that is producing heat. You place the resistor against a sheet of steel and wait for equilibrium. One side of the steel is now at the same temperature as the resistor (assuming negligible contact resistance), the other free-air side of the steel is at a lower...

Homework Statement Calculate the buoyant force on a solid object made of copper and having a volume of 0.2 m^3 if it is submerged in water. Homework Equations B = pVg The Attempt at a Solution I followed the above equation and did B = (8.92 x 10^3 kg/m^3)(0.2 m^3)(9.8 m/s^2) B = 1.74 x 10^4...

Dear Friends! Why don't we get thrusted(pierced) inside solid floor. Is there anything related to "Pauli's exclusion principle here"? If yes ,HOW?

I'm trying to practice for my final. The sample problem is: "Find the volume of the solid generated when the region bounded by y = x4and y = x1/3, 0<=x<=1, is revolved about the x-axis." To start, I set the two y equations equal to each to find the points of intersection. x4 = x1/3, : raise...

Hello everyone ! I'm a bit confused about assumption that's made in "Concept in Thermal Physics ; Stephen J. Blundell and Katherine M. Blundell" page 205. It is stated that " Consider a cubic solid in which each atom is connected by springs (chemical bonds) to six neighbours (one above, one...

Homework Statement A two dimensional solid has two electrons per unit cell and has a Bravais lattice with primitive vectors ##\vec a = \ell \hat x## and ##\vec b = \ell \hat y##. The crystal potential is weak and the solid behaves like a free electron metal. a)In a reciprocal space diagram...

In two weeks I have my clasical mechanics exam. This includes rigid solid and non inertial frame of reference chapters. Do you know any problem that involves both themes? This is how my exam is going to be :nb) Also, do you have any solved-problems book you could recommend me? Thanks in...

Homework Statement find the volume of teh solid based on the interior of the circle, r=cos(theta), and capped by the plane z=x. Homework EquationsThe Attempt at a Solution i have drawn out the circle of equation r=cos(theta). I think that since z=x and is above the region, we have to use the...

Hello I got to thinking about temperature when i prepared a lecture for my high school class. For a monoatomic ideal gas the temperature is proportional with the average kinetic energy of the atoms. For a diatomc gas we also have rotational energy (vibrations assumed to be freezed out), and for...

Hi, I would need a huge amount of assignments in solid state physics with solutions. I found assignement from other universities. Any book reference? Thank you

What are some recommended resources with good problems (and preferably solutions as well) on Solid State Physics at the level of Kittel? I'm aware of Yung-Kuo Lim's "Problems and Solutions on Solid State Physics, Relativity and Miscellaneous Topics" which has graduate qualifying exam questions...

Hi I was recently picked up solid state theory by Walter A. Harrison. I was wondering if anyone happened to have a solution set to this book as the publisher site does not have one up. Harrison has solution sets for other books up on the publisher's site so I feel like this one should be out...

Homework Statement Taylor, Classical Mechanics Problem 10.11 ** a) Use the result of problem 10.4 (derivation of the general integral for a moment of inertia of a continuous mass distribution in spherical coordinates, using point particles) to find the moment of inertia of a uniform solid...

Technically I'm supposed to have a total of 8 optical modes but only 4 of them were seen in a solid (by spectroscopy). So I suspect there's some degeneracies and symmetries involved, but I don't know which ones. I have two sets of assigned degeneracies: frequency; degeneracy set 1; degeneracy...

Homework Statement Hi all, I have been given the task of quantifying the energy resolution of a p-i-n semi-conductor x-ray detector and present it as a value in electron volts Homework Equations %Resolution=E FWHM / Ei Where E FWHM is the full width half maximum of a peak and Ei is the...

Homework Statement A long circular steel tube having a mean diameter of 254 mm and 3.2 mm wall thickness is subjected to an internal pressure of 4.83 MPa. The ends of the tube are closed. The yield stress of the steel is 227 MPa. Find the additional axial tensile load F which is needed to...

I was wondering this question the other day and have read a few websites but a lot of it goes over my head. I have two questions, can anyone explain in relatively simple terms? I am happy to read the more detailed science behind the concepts, but need the concepts to be stated pretty plainly...

Homework Statement Hello, I am to find the volume of the solid given by x2 + (y-1)2=1 rotated about the y-axis. I may use either shells or cylindrical method. I attempted shell method, but am just learning this, still foggy and this is the one question that isn't coming out right. Homework...

Forgive me for asking this question if the answer is obvious. The truth is I have a BENG in electrical engineering and want to know the differences between the two. From an engineer's perspective its about knowing what you can do with the devices in a useful way and design, analyze and build the...

Hi All, I'm trying to create something which has a solid, cylindrical, non-reflective core (assume the core is made out of a black rubber similar to that of a car tyre for instance and 20m in length, but only 1cm in diameter), which has a translucent or transparent plastic layer (or several...

I am interested in ultrafast optical spectroscopy of solid state materials. The unique measurements and especially the process of developing new measurement tools for the optical measurement of quantities that are hard to measure in other ways, and the learning of transferrable skills, make this...

Homework Statement The electric field at a distance of 0.143m from the surface of a solid insulating sphere with radius 0.381m is 1630N/C . a) Assuming the sphere's charge is uniformly distributed, what is the charge density inside it? b) Calculate the electric field inside the sphere...

How long before our magnetic field disappeared and how long after that would we be dead due to radiation?

Homework Statement Use the shell method to find the volume of the solid generated by revolving the region bounded by the line y=2x+15 and the parabola y=x2 about the following lines: a) The line x=5 b) The line x= -3 c) The x-axis d) The line y=25 Note: leave answer in terms...

When light passes in glass, water etc then velocity is reduced and direction changes HOW?

I am an undergrad and for the most part I am looking for a good physics class to take. I am considering taking solid state physics at the level of Kittel as its one of the only physics classes offered at the undergrad level this semester that I haven't taken. I haven't taken quantum mechanics...

For some systems, discrete intermediate compounds rather than solid solutions may be found on the phase diagram, and these compounds have distinct chemical formulas; for metal–metal systems, they are called intermetallic compounds. e.g. Mg2Pb has 33 at% Pb For binary isomorphous system like...

If so, what about smells coming from solid matter, like wood?

I want to know the derivation of solid angle. I have found on net. But the derivation is to long, is there any short method?

Hi Everyone, I was curious as to what the most current model in solid state physics is. I've studied the Einstein and Debye Models in Stat Mech, as well as free electron and tight binding models in an intro solid state class, but these models are rather old(which does not imply they are...

Looks like it is time for round two... So for any of you who were following my other post (https://www.physicsforums.com/showthread.php?t=762560) about whether or not to glue my model or make a solid piece for a modal analysis, you know that I was having a lot of trouble deciding. It turns out...

Learing about matter and what it is composed of, I'm spending a lot of time trying to wrap my brain around the idea that most of our mass is empty space, that the mass of our atoms is calculated and expressed in energy. How is this possible? Are the recreations moving so fast they almost create...

Homework Statement "A solid sphere rolls down an incline plane without slipping. If the center of mass of the sphere has a linear acceleration of 1.21 m/s2, what is the angle of the incline to the horizontal?" Homework Equations a = g * sin(θ) The Attempt at a Solution I got home...

I m considering to design a solid axle ATV for rear wheel drive without differential...so I want to know about what design considerations I have to consider while its designing.(like track width...suspension linkage position)

I am performing Modal analysis on a fairly simple structure (a square aluminum rod with some pillars attached to the top of it) and need to get some basic modal analysis results. Making a solid aluminum piece would be rather expensive and time consuming to design and then mill out, so the...

Homework Statement A solid disk is spinning around it center with an angular velocity of 35.0 rad/s. The disk has a mass of 3.6kg and a radius of .50m. You drop a thin ring with the same radius and a mass on the disk along the same center of rotation. What is the angular velocity of the...

I am somewhat confused about the connection between divergence and solid angle for a beam. I know individually what each term means... but I'm confused as to how (or even if) one can calculate the solid angle of a beam, given the divergence. I have some notes from a previous lecture series I...