Solid Definition and 1000 Threads

I am investigating the nucleation on solid surface during liquid-liquid phase separation, I know the free energy change is and I don't know if it is correct to get Can someone calculate it to have a check?

Homework Statement Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the line y =4. $$y=\frac 3 {1+x},~ y=0,~ x=0,~x=3$$ Homework Equations $$V= \int_a^b ([R(x)]^2-[r(x)]^2)dx$$ The Attempt at a Solution I understand how to use the...

I was trying to find the compressibility of water and compressibility of air to compare. For compressibility of water I found 46.4e-6 For compressibility of a gas... I am having a tough time finding anything. compressibility factor I can find, which is 1 for Hydrogen... but how does that relate...

My university lecturer is very new, his lectures and notes are hard to follow and understand. He was a replacement to the old solid state physics lecturer and has designed the module from scratch, so it is unpolished in its current form. Can you please suggest some alternative resources...

Hello! I am going to enroll in a Solid State physics course and I want to know what good books are out there on the subject at an undergrad level. Any suggestions are appreciated! Thanks!

Hi. I am hoping someone can explain to me, what is happening. I have a 100g of 99.99% pure gallium. I placed it in a bowl and sat it in a dehydrator (lower heat than an oven) and set it for 150 degrees. In about 20 minutes, the gallium became liquid. I placed the bowl in the refrigerator and...

I have a solid sample possibly containing a few species of phosphate salts from a precipitation reaction. I am only concerned with the phosphorus in the solid sample. What are the possible methods of accurately measuring the P or PO4 content in the solid? Thank you!

Picture water flowing in a duct. In these kinds of scenarios, the loading exerted by the moving fluid to the solid in the perpendicular direction is often taken as being equal to the pressure of the fluid at the wall. I agree that the above assumption is true for a stationary fluid. For a...

I want to know of any standard method for identifying (and possibly quantifying) the species contained in a solid mixture sample. Thanks in advance!

Homework Statement A solid homogeneous hemisphere of radius a rests on top of a rough hemispherical cap of radius b, the curved faces being in contact. Show that the equilibrium is stable if a is less than 3b/5. Homework Equations V = mgh The Attempt at a Solution So the center of mass of a...

Does energy have different states analogous to the solid, liquid, gas, and plasma states of matter? Would they be the same as "forms of energy" described here? https://en.m.wikipedia.org/wiki/Forms_of_energy

The double slit experiment shows, that particle only become solid when observed, shouldn't be matter behind walls aka where it is not watched be only a potential wave and not be solid at all? Is that what Max Planck meant when he said: “All matter originates and exists only by virtue of a...

Homework Statement In this video , why for the xy plane projection , it's a circle with center = y = 1 , i can understand the r = 2sin theta ? why we can't ∬ r dr dtheta where , r = 1 , and with theta = 0 to 2 pi ? They are the same , right ? since volume = integration of area with z a-xis...

I'm curious if anyone knows of a good video of an extreme amount of pressure being applied to a sold amount of metal or other dense object. We're learning about fluids in my class, and naturally we discussed submarines, empty bottles, etc. but everything mentioned seemed to be hollow on the...

Really odd question for you guys but I'm curious about your input, and apologies if it's a foolish question to ask anyway(I'm a CS student and this came up in a discussion with a classmate of mine). So I know this is a fairly odd thought and not likely practical in any real world scenario, but...

Homework Statement Find the centroid of solid enclosed by surface z= y^2 , plane x=0 , x = 1 and z =1 . The density is 1 Homework EquationsThe Attempt at a Solution Here's my working . Centoird = mass of inertia / mass So , i find the mass first . It's clear that the circle is on zx...

Homework Statement Find the volume of the solid by subtracting two volumes, the solid enclosed by the parabolic cylinders: y = 1 − x2, y = x2 − 1 and the planes: x + y + z = 2 4x + 5y − z + 20 = 0 Homework Equations ∫∫f(x,y) dA The Attempt at a Solution So I solved for z in the plane...

Homework Statement By using cylindrical coordinates , evaluate the volume of solid bounded on top of sphere (x^2) + (y^2) + (z^2) = 9 and it's sides by (x^2) + (y^2) = 4x . [/B]Homework EquationsThe Attempt at a Solution I have sketched out the diagram , but i dun know which part is the solid...

Homework Statement By using cylindrical coordinate , evaluate ∫ ∫ ∫ zDv , where G is the solid bounded by the cylinder (y^2) + (z^2) = 1 , cut by plane of y = x , x = 0 and z = 0 I can understand that the solid formed , was cut by x = 0 , thus the base of the solid formed has circle of (y^2) +...

Hello Everyone, I need to find the volume of this solid bounded by the paraboloids z=x^2+y^2 and z=8-x^2-y^2. I need to find the region of integration. I need to find the limits of integration as well. I tried to graph the two surfaces. Thanks Cbarker1

Find the volume of the following solid: The solid lies below the surface z=x^3y and above the triangle in the xy plane with vertices (1,0), (2,1) and (4,0). The region is graphed (1,0);(4,0);(2,1);I need to find the y limits in the double integral. Thanks CBarker1

Homework Statement Find the volume of solid which is bounded by z = 4-x-y and below by region in the plane of 0<x<2 , 0<y<1 When i use zx -plane projection , i found that my ans is different with the ans of using xy projection ...Which part i did wrongly ? From the ans given , volume = 5...

Homework Statement Homework Equations MaVa1 + MaVb1 = MaVa2 +MaVb2 The Attempt at a Solution I found Va2 = 2 m/s e is found to be 1.75, correct?

Homework Statement Homework Equations Fubini's theorum The Attempt at a Solution I drawn the diagram with the limits (for x, y, and z) and come up with something with 4 faces, 5 corners, 8 edges is that something you guys got? Thanks

Hi I'd like to ask how you would put a droplet at high viscosity (say 2.5 million times more viscous than water) on a solid surface? The droplet would have to be small (volume less than 10uL, r<1.34mm).. Thanks!

The common explanation is this: If the conductor has a net charge, then the charges repel each other until they arrange themselves symmetrically around the outside of the sphere, and if you do the math the electric field will cancel out everywhere inside the conducting sphere. Alright, but what...

I am trying to design a drive shaft that breaks when i apply a specific torque to protect fro over torquing. I made a few samples, and now i am trying to compare the results to my equations. My problem is, none of the equations seem to match the actual results. Your help would be appreciated: I...

Hello, I need to learn how Solid State NMR and X-ray Crystallography work (theory and practical application). I'm primary interested in how those experimental techniques are used to determine molecular structures. I'm an undergrad physics student and I need this to pass my final exam. So if some...

Homework Statement Q3a [/B] Copper (Cu) crystallises in a face-‐centre cubic (fcc) structure (with a basis of one copper atom). Draw a diagram of the unit cell of Cu, on your diagram indicate the (1, 1, 0) lattice plane and the [2, 2, 1] lattice direction. Q3b: Calculate the...

Hello! We have a solid cylinder and then we take that and drill its core so that it becomes hollow. In which case the cylinder will be stronger? Thanks!

I wasn't sure if I should post this in general discussion or in solid state section, but am I the only one who finds the Kittel textbook horrible? It seems full of semi-empirical, basic math, and boring, surface level observations written as dryly as possible. I really like solid state physics...

Homework Statement A solid cylinder of uniform density of 0.85 g/cm3 floats in a glass of water tinted light blue by food coloring. https://s1.lite.msu.edu/res/msu/kashy/physicsLib02/32_Fluids1_Pascal_Arch/graphics/archimedes.gif Its circular surfaces are horizontal. What effect will the...

Homework Statement A small solid sphere of mass M0, of radius R0, and of uniform density ρ0 is placed in a large bowl containing water. It floats and the level of the water in the dish is L. Given the information below, determine the possible effects on the water level L, (R-Rises, F-Falls...

I was just curious... what is the practical reason behind having two separate units for measuring volume? For instance, we can use cubic centimeters and mL interchangeably in practical medicine, i.e. injections. But we tend to use cubic (centi)meters for solids, and liters for liquids/gasses...

Hello , I'm trying to model the forces on a needle being inserted in a tissue. Needle tip penetrates the tissue surface and as it moves through the tissue, it experiences friction from needle-tissue interaction. Friction arises from the pressure exerted by surrounding tissue as it grips the...

Consider the internal energy of a gas and solid (different materials) both at the same temperature, which material has the larger potential energy and why? Do they also both have the same kinetic energy? Finally is the definition of temperature as the average kinetic energy of the particles only...

I have found a couple other threads like this but I am looking for something at a very beginning level. I joined an experimental condensed matter group for the summer at the school where I will be matriculating as a first-year graduate student in the fall. They study various...

So i was reading my geometry textbook and it said "and obviously there can be no solid where every vertex has a (5,5,4) arrangement"; unfortunately, this is not an obvious fact to me. Can somebody explain to me what makes this so obvious? This statement was the end of a proof by contradiction so...

Homework Statement edit: I had put this in the calculus section because it was a problem from Stewart but I guess it's closer to a physics problem considering the use of Gauss's Law. My apologies for any confusion this my [/B] I've been trying to do this problem without making use of the...

Homework Statement [/B] My question is more about the math of the problem. For equation 22.97, how do I construct a 3x3 matrix from a 12 element series? After constructing the matrix should I set the determinant equal to 0 where I will find the determinant has 3 solutions (2 being...

... same energy levels of electrons as in glass. What would it take to change the eV levels of the electrons in the solid opaque matter, to the same energy levels of the electrons in glass. There is nothing necessarily special about glass, it is just a combination of silicon, sodium, and...

Hello. Recently, I have read the article about plasma surface treatment. The article says contact of the plasma to the surface of the sample increases surface energy by transferring plasma energy to the surface. Then it is suddenly saying that wettability of some industrial ink or paints on...

Homework Statement Find the volume of the given solid. Bounded by the planes z = x, y = x, x + y = 5 and z = 0 Homework Equations V =...

Given $$x_1^2 -y^2=a^2, \ \ x_2=a+h$$ Or $$x_1=\sqrt{a^2+y^2}$$ Find Volume about the $y$-axis So... $$\pi\int_{a}^{h} \left(x_2^2-x_1^2\right)\,dy$$ Actually I am clueless?!

Let $$f(x) = x^3 + 4x^2 - x + 5$$ revolve about the line $$y(x) = -x + 5$$. There will form one solid with finite volume. Find the volume of that solid.

Hello I wish if anybody can enlighten me about experimental solid state physics. What they do every day? I mean who enroll in this major what careers they can find after completing their master degree in it? Is their a ph.D related to this major?

Homework Statement So I am trying to accomplish the above by using spherical coordinates, I am aware the problem may be solved using dv=dxdydz= zdxdy were z is known but I would like to try it using a different approach (using spherical coordinates). Any help would be greatly appreciated...

Could you perform Static structural analysis on this solid sphere? No contacts to be used. I do not have any specific boundary conditions(unable to apply constraints to a complete solid spherical body) All i know is the pressure that needs to be applied. You could consider a smiley ball on...

Hello Forum, For a combustion to happen, there needs to be one material that plays the role of the fuel and another material that is the oxidant. For example, fuel and oxygen react together to produce light and heat and expanding gases. In making rocket fuel, sugar is used as fuel and...

I am studying some solid state physics, in particular magnetism; I have a few questions about the explanations. My understanding is that paramagnetism is primarily an effect of the electron's spin-angular momentum: an unpaired electron will have a dipole moment which preferentially aligns with...