Yield Definition and 205 Threads

Hey guys, I recently did a compression lab with different materials (wood and pvc pipe) and I have to plot the stress/strain curves given the data collected, as well as find yield strength (0.2% offset), ultimate compressive strength, and modulus of elasticity. I've already calculated...

Homework Statement Cu(s) + 4 HNO3 (aq) Cu(NO3)2 (aq) + 2 NO2 (g) + 2 H2O (l) Cu(No3)2 + 2NaOH -------> Cu(OH)2 + 2NaNO3 Cu(OH)2→CuO + H2O CuO + H2SO4 -> H2O + CuSO4 CuSO4(aq) + Zn ( s) ------- ZnSO4 (aq)+ Cu(s) I carried out the follow reactions using copper as an inital product and my...

Hello, I'm new here and so if I've put this in the wrong section or anything, please let me know and I'll fix/change whatever needs to be done. I just wanted to see if someone could help me understand something. When choosing a torque value, is it just ~90% of the yield stress of the...

Homework Statement A cube of aluminum is suspended deep in the ocean. Will it yield if it is placed deeper and deeper in the ocean? Homework Equations The Attempt at a Solution I guess that it will yield since the pressure from water will be stronger as it goes deeper...

The title pretty much sums up my quandary. I'm confused as to how a vector "x" with the same number of elements as columns in matrix "A" could yield a vector "b" when multiplied together. I mean, what's stopping "b" from being a matrix instead?

It is a proof question. Does anyone can tell me how to do this question?question 22.2 it is the question for extra credit for my final exam. thank you so much.

So, I'm studying for the MCAT. There..I've said it. :) But, it's not a homework question: I just don't understand the concept. My study book's thermodynamics section includes a very rough sketch of a heat engine to describe the 2nd Law of Thermodynamics. A side note in the text says that if...

Homework Statement I need to understand how to integrate \int_{0}^{t}\int_{0}^{s} \delta(\tau-\tau')d\tau d\tau' The solution is min(t,s) Homework Equations See aboveThe Attempt at a Solution min(t,s)

Why can there sometimes be a difference observed between them?

I have an application that involves forming 2024 aluminum in the T42 state. I need to determine [approximate] the amount of elastic stretch vs yield once the yield point has been exceeded. In other words, once beyond the yield point, how much of the strain results in addional yield, as opposed...

Hey everyone. I haven't taken statistics yet, but as a matter of interest I was contemplating the fact that uniform random variables added together seem to generate "bell curve" like distributions. My question is if I add up an infinite number of equally distributed random variables will the...

I need to compute the yield point for an experimental true stress vs true strain plot of a material as attached in the screenshot. See attached; I have true stress vs true strain plot. I took some initial points on the curve and fitted a straight line which gives me the elastic part of the...

Homework Statement A long cylindrical boiler shell is 1.75 m in diameter and has a wall thickness of 12 mm. Treating the boiler as a thing shell, predict what internal pressures will produce yield in the shell according to the: (a) Rankine, (b) Max. Principal Strain, (c) Tresca and (d) Von...

Hi everybody, I'm a physicist, not a statistician, by training and my knowledge of statistics is severely limited. I indulge in sports betting where I typically bet on the exact score of a game. To see whether my approach works I have to know whether I'm winning or not - to be precise, I must...

% yield ester I'm having a problem with my chemistry lab report. the question is: What would the % yield of ester be if the reaction were simply allowed to equilibrate (i.e. no products are removed)? I think the the yield is going to smaller but i don't know why. pls help

I have a question about source hardening: what is the reason for a decrease on the yield strength in the case of the 1-(Un-irradiated) Body centre cubic (bcc) 2- (irradiated) face centre cubic (fcc)

Approximately 12 million kilograms of phosphoric acid (H3PO4) are produced annually for fertilizers, detergents, and agents for water treatment. Phosphoric acid can be prepared by heating the mineral fluoroapatite (Ca5(PO4)3F) with sulfuric acid in the presence of water. Ca5(PO4)3F + 5H2SO4 +...

Homework Statement The energy released by nuclear bombs is measured in kiloton (kt) or megaton (Mt) units. One kiloton is a unit of energy released by 1000 tons of trinitrotoluene (TNT). One kiloton is 4.2×1012 joules. The yield of fission bombs is typically between 10 and 500 kilotons, the...

What will fail if the aluminium impeller rotating at 7500 rpm and powered by 355 kw motor strikes against the stationary 10 mm thick ms plate welded at both the ends having length of 350 and width 200 mm and impeller blade is 12 mm thick. I am confused in first glance we think that blade will...

Homework Statement Let I,J be ideals in a commutative ring R. Assume that R/(IJ) is reduced (so that it contains no nilpotent elements). Prove that IJ = I \cap J Homework Equations For two ideals I and J, we have IJ = \left\{ a_1 b_1 + \cdots + a_n b_n : a_i \in I, b_i \in J, i=1,\ldots,n...

Hi guys, first of all I want to say that this forum saved me several and several times and I love it. I have a question for you related to absolute quantum yield of naphthalene determined with an integrating sphere. Do you have an idea how much should be? COuld you pass me a reference paper...

http://science.discovery.com/tv/through-the-wormhole/episodes/what-are-we-made-of/ Discovery channel is running a very excellent episode on particle physics & the LHC hosted by Morgan Freeman and they mentioned something which I want to inquire further. It is mentioned in the program that...

a beam with an effective span of 8.2m is required to carry uniformly disributed loading of gk = 12 kNm-1(in additon to its own self weight) and qk = 10kNm-1. design a suiable reinforced concrete beam using strength class C30 concrete and high yield reinforcement could somone check my...

I was tasked to calculate the yield of CuSO4 by the reaction of H2SO4 and CUO. My equation says the it should get CUSO4 and H2O. But should we use CUSO4.5H2O for theoretical yield instead since it is a crystal that we are calculating - if so then I could not balance the equation... what...

Since the cold war nuclear race we haven't really heard much about nuclear weapons development, but i imagine that the technology is pretty far ahead today compared to what it was when they detonated Tsar Bomba in 1961, which was a 50 mt. hydrogen bomb with a design that allowed 100 mt. So i...

I have every possible value and propertie for E-Glass fibre but i can't find yeild strength anywhere anyone know it?

Homework Statement We were given many different slab sizes, shapes etc and asked to analyse them using Work = Energy equilibrium checks to find q, the maximum load per m^2 the slab can take. The first part was to show the fracture lines to use for analysis but I am stuck on one of them. I have...

Homework Statement What is the theoretical yield of calcium carbonate if 2.07 grams of calcium chloride dihydrate reacts with excess sodium carbonate according to the balanced chemical reaction shown below? Homework Equations Please use molar mass values calculated and rounded to the...

Homework Statement Here's the measurements from my expirement. (reaction 1) 0.548 g Cu (s) 4.0 mL HNO3 100 mL DI water (reaction 2) 30 mL 3.0 M NAOH (reaction 3) nothing was added. (reaction 4) 200 mL of DI water 15 mL of 6.0 M HCl (reaction 5) 2.095 g Zn 10 mL 6M HCl 5...

Hi This is my first post, and I have a lot of ideas to talk about I'll start with this one: What would the difference be between a thermonuclear explosion and an antimatter explosion, of equal yield (say 2 megatons each), and similar location and weather? I think that the each would have a...

Right this is the question, Determine the yield stress for a metal with an average grain diameter of 0.045mm, if the yield stress for a metal changed from 650Nmm^-2 to 720Nmm^-2 when the average grain diameter decreases from 0.054mm to 0.037mm. I cannot figure this out, I've been trying...

Why do Fe-C and other metals exhibit upper and lower yield points? And also can you get substitutional solid solution in any Fe-C metals, like ferrite, austenite etc?

Homework Statement If the reaction of 2.5 g of Al with 2.5 g of O2 produced 3.5 g of Al2O3, what is the percent yield of Al2)3? Be sure to write and balance equation. Homework Equations Percent Yield = (actual yield / theoretical yield ) x 100 The Attempt at a Solution 4Al + 302...

Homework Statement I'm writing a paper on the Manhattan Project, and as part of this paper I am asked to show: "... calculations that can help illustrate the explosive power of an atomic bomb compared to ordinary explosives."Homework Equations Released energy per fission: Q = \Deltam * c2 The...

Homework Statement Use the unbalanced equation NaN3 → Na + N2 to answer the following question(s). The % yield of an experiment in which two moles NaN3 was used and 21 g nitrogen was isolated is ________.Homework Equations percent yield=({actual yield}/{theoretical yield})100% The Attempt at...

http://www.physorg.com/news/2010-11-laser-neutron-yield-energy.html DT produces 17 MeV per fusion, so that's an output of about 800 joules; a factor of about 150X short of break even for energy applied to the target, and perhaps ~1000X short of the gain required for a practical fusion power...

I'm given that Copper sulfate + sodium carbonate --> copper carbonate + sodium sulfate. Mass of Sodium Carbonate 1.460g Volume of copper sulfate 28.50 mL Actual yield of copper carbonate is 0.15g The question is using your data and knowing that sodium carbonate was in excess...

Homework Statement The solutions to the linear differential equation d^2u/dt^2 = u for a vector space. Find two independent solutions, to give a basis for that solution space. The Attempt at a Solution I want to understand this question. I feel that there's something I'm missing. I...

Homework Statement Suppose (Y1, Y2, Y3, Y4) = (5.2, 6.8, 11.9, 17.0) are the average yields (in tonne/ha) of potato grown in soil with 4 different levels of superphosphate fertiliser, x1 = 1.20, x2 = 1.75, x3 = 2.30, x4 = 2.85. We want to fit the model E[Yi] = \beta1 + \beta2xi + \beta3zi...

In this lab we saw the reaction of lead (II) nitrate with potassium iodide to form a lead (II) iodide precipitate and aqueous potassium nitrate. Pb(NO3)2 + 2KI ----> PbI2 + 2KNO3(aq) There was 3.31 grams Lead Nitrate, 1.66 grams Potassium Iodide, and 0.48 grams lead (II) iodide...

Hey, Just wondering how to explain the yield point run-off for low carbon steel. Why does LCS have an upper yield point, followed directly by a lower yield point? Thanks, -Spoon

Hi, This question came up on my midterm and I had no idea how to answer it without redrawing the entire curve as a stress vs. strain curve (which obviously took too long to do). Anyway, I'm just requesting a general procedure, not a numerical answer. If you had a Load (y-axis) vs...

Homework Statement In my Chem lab we synthesized zinc iodide. To 1g granulated zinc, 2ml distilled water and 4 drops of 2 M acetic acid was added. Then 1g of iodide. The mixture was agitated and several minutes later the reaction completed. There was some excess zinc, so we set up a...

Homework Statement Calculate the volume of water expected if the yield of ester were 100%. 19.0mL of n-propanol (0.25 Mol) 18.5mL(0.25 Mol) propanoic acid. 5 drops concentrated sulfuric acid Homework Equations The Attempt at a Solution C3H7OH + C3H5COOH ---> C6H12O2 + H2O (...

Homework Statement I am given the trends for yield stress and fracture toughness as functions of temperature for steel. I need to explain the trends Homework Equations none The Attempt at a Solution I am guessing the yield stress is the stress that the material can withstand...

Does anyone know where to find fission products' fission yield data of APWR and PBMR?

We were preparing Alkene from Alcohol & were asked to calculate percentage yield. We used 13.5 ml Cyclohexanol with 13.5 ml water & 7ml Sulfuric acid. To calculate % yield,i need theoretical mass.. So i was calculating no.of moles of cyclohexanol & cyclohexene (the product) to get the...

I'm curious about how a SN1 reaction can yield only one product (if it can, at all), rather than two (ultimately leading to a retention of stereochemistry). Would sterical reasons and/or its orbitals also have any play into this? Thanks!

Does anyone know or know of a good resource where I can find the yield stress and endurance limit of ASTM A513 steel?

Homework Statement Three vectors A, B, and C add together to yield zero: A + B + C = 0. The vectors A and C point in opposite directions and their magnitudes are related by the expression: A = 2C. Which one of the following conclusions is correct. A. B and C have equal magnitudes and...