Yield Definition and 222 Threads

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...

URGENT:Sources of Error that Impact the Percentage Yield So my question is: 1. What sources of error in the experiment would affect the percentage yield of reaction? 2. In what ways this experiment could be improved...

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...

Hi could someone tell me a little more about shockwaves? I have looked everywhere but cannot find anywhere that shows explosive yield to blast radius and the dangers to human of being at different proximities to a blast. I know the closer you are to one the more likely you are to suffer internal...

Are the temperatures produced from a nuclear reaction special in anyway? If a 20 kiloton nuke is producing hundreds of thousands of degrees at it's center, would the same ballpark be true of 20,000 tons of TNT, which is roughly equal in yield?

Homework Statement Calculate the theoretical yield of aspirin (C9H8O4). C7H6O3 + C4H6O3 --> C9H8O4 +C2H4O2 Mass C7H6O3 = 2g Volume C4H6O3 = 4mL Homework Equations The Attempt at a Solution I am not sure where to go with this prolem at all. I can't just assume that the density...

I got a function - \frac {v - v_c}{cr} = \frac {dv_c}{dt} Suppose I integrate this so as to get the original function...apparently the original function seems vc...so I should get this function after integrating; since we have dt in the denominator, it means the original function vc was...

Find the effective yield on a discount loan with the given discount rate r and the time. (Round your answer to two decimal places.) r = 2.7%, 11 months I tried using the equation r=(1+i/t)^t, but could not come up with the exact correct answer. I know the answer should be about 2.8 or...

Hi, I have a few questions that I am struggling with. Any help would be greatly appreciated. Question 1 Calculate the molar mass of calcium chloride dihydrate, CaCl2 • 2H2O. Please use the Periodic Table values rounded to the hundredths place for your calculation and round your answer to...

Homework Statement A ski pole is bent(plastic deformation) in three point bending by applying a load 2F perpendicularly to the ski pole. The forces at the end points are of magnitude F. If the pole yields due to plastic deformation at the mid point longitudinal span of the ski pole which is...

Homework Statement I did my lab work a week ago and in the lab report I am to discuss my results, and how successful. If not successful, then why not. Our Organic Chem. lab was on crystallization and we had to obtain pure Benzoic Acid crystals from 2 grams of a crude material. My question...

Homework Statement Germanium forms a substitutional solid solution with silicon. Compute the weight percent of germanium that must be added to silicon to yield an alloy that contains 2.43e21 Ge atoms per cubic centimeter. The densities of pure Ge and Si are 5.32 and 2.33 g/cm3 respectively...

Thank you in advance for the correction of the resolution. Homework Statement By reacting 225 g of hydrochloric acid with 300 g of calcium carbonate with 80% of purity, 34 L (litres) of gas were obtained, measured at 37oC and a pression of 0.82 atm. What is the yield of this reaction and what...

Thank you in advance. Homework Statement Nitrogen gas can be obtained from the reaction between sodium azide and iron oxide. 6NaN_3_{(s)}+Fe_2O_3_{(s)} \rightarrow 3Na_2O_{(s)}+2Fe_{(s)}+9N_2_{(g)} a) What is the yield of this reaction, knowing that, from 390 g of azide and 400 g of...

calculating theoretical yield of resulting alum from water dissolving...help asap! a mass of 13.02g (NH4)2SO4 is dissolved in water. After the solution is heated, 27.22g of Al2(SO4)3*18H2O is added. calculate the theoretical yield of the resulting alum (formula is...

Is there a difference, when looking at the stress-strain diagram, between the "Proportional Limit stress" and the "Yield Stress" ? Thanks!

Hi everybody, I have a doubt about a question on my future exam of Materials Science. Is ductility associated with the manifestation of yield phenomenon? * TRUE *FALSE I have doubts because I think I could answer this question in both ways... Any help will be more than welcome!

Homework Statement A corporation sold a 20-year, 10% semi-annual coupon bond issue 2 years ago. The bonds are callable at 108 ( percent of face value) 5 years after issue and at 104 (percent of face value) 10 years after issue. If the bonds are currently priced at 102.5 (percent of face...

Homework Statement In the flgure below, the incline has mass M and is fastened to the stationary horizontal tabletop. The block of mass m is placed near the bottom of the incline and is released with a quick push that sets it sliding upward. It stops near the top of the incline, as shown in the...

I try to find the solution of the integrals below for more than a week. \int_{p>0}^{\infty}\frac{\exp[-ap]}{p}dp can anyone give me a hint about how to solve it?

I have a steel material that has a yield strength of 515 mpa and a tensile strength of 615 mpa at zero degrees. What i need to know is will the tensile strength and yield strength be higher than 293 mpa at 80 degrees. The steel is ahigh tensile grade steel from china (Q390C).

Scenario: Suppose that a pump creates a partial vacuum, which is used to input air (gas) from the environment into a long tube. At a certain point within this tube, diatomic hydrogen and oxygen (gases) are also inputted into the tube. The tube outputs back into the environment. I have...

The problem is to estimate a zero-coupon yield curve for up to 5 years ahead, knowing (for time t=0) the following: bond 1: coupon 6.5, maturity - 1 year, price = 103 bond 2: coupon 5, maturity - 2 years, price = 102 bond 3: coupon 4.2, maturity - 3 years, price = 100 bond 4: coupon 6.5...

Assuming a Light Water Reactor, what would be the decay energy of the fission products of the reactor's nuclear waste and it's thermal yield? What I am getting at is that instead of just storing the waste, i want to know how much electricity the waste emits. I have very little information...

Is Yield Stress for a fluid a real property? Or is it a time dependent illusion we are measuring? For example - some glass materials are referred to as super-cooled fluids and yet behave and appear like solids. In reality though these super cooled fluids flow - very slowly. Some old...

em Homework Statement In a certain region, the magnetic field as a linear function of time is given by B = Bo \frac{t}{/tau} z hat Bo and tau constants. A)FInd a simple expression for the vector potential which will yield this field. B)Assuming the scalar potential is a constant, find E...

Is calculating the percent yield in moles different than calculating the percent yield in mass? I know that to calculate the percent yield in mass, you divide the actual over the theoretical and multiply by 100. There happens to be a side note in my homework saying that percent yiled can...

Heres my given problem: Gauge Length = 2 in. Area = 0.5 in^2 The specimen yields under a load of 32,000 lb The corresponding gauge length is 2.0083 (the 0.2 yield point) Max load = 60,000 lb @ gage length = 2.60 in I need to determine the yield strength, modulus of elasticity, and...

Hi, folks, I'm an aspiring Mechanical Engineer, & as such am very new to the subject of stress, strain, etc. I'm designing an assembly using a hi-performance polymer that has the following characteristics: Tensile Strength, 73°F 10.1 kpsi (10,100 psi) Tensile Modulus (E) 340 kpsi...

Homework Statement differance between tensile and yield strength. please help. Homework Equations The Attempt at a Solution

Homework Statement Assume that a bank wanted to issue a CD with a total face amount of USD 3,000,000 for 6 months (181 days). The coupon rate that the bank wanted to pay was 3.50% p.a. Currently the market is only demanding a 3.25% p.a. yield on a money market basis for 6-month CDs issued...

What would the explosive yield of a 100kg, 1 meter long, solid core titanium rod falling to the Earth from high-orbit be?

Is this how it works? : BE(product) - BE(reactant#1) - BE(reactant#2) => Yield from fusion of product Easy enough, but what if reactant#1 and/or reactant#2 are also products of fusion?? Does the equation need to be broken down even further, or is the final BE for the final reactants...

Greetings---I would like to fool around with numbers, finding the fusion and/or fission yield (in MeV) for various combinations of elements. I can do the simple ones involving Hydrogen and it's isotopes, but figure I'll run into trouble with more complex nucleuses. Can anyone point me in right...

[SOLVED] Yield (ROI = Return Of Investment) formula question The Calculation of simple yield: The Return* (Winnings) __________ X 100= ROI (%) Investment* (Stakes) so for example: I have 1000 bets with odds 2,00 500 of them are winning and 500 losing. So i am on 0 and my ROI is...

Homework Statement Exactly how do you find the theoretical yield of methyl m-nitrobenzoate from 10.0 g of benzoic acid? Homework Equations 1) Ph-COOH + CH3OH + H2SO4 --> Ph-COOCH3 2) Ph-COOCH3 + HNO3 + H2SO4 --> methyl m-nitrobenzoate The Attempt at a Solution 10.0 g...

How accurate is the offset yield point theory? http://www.princeton.edu/~humcomp/sophlab/m&mgl_7.htm

Yield gone wrong! Hi, I just have a question about some practical things in a chemistry lab and errors. :rolleyes: We carried out a recrystallization experiment of benzoic acid and napthalene :zzz: last week and during one of the steps where i was supposed to transfer my pure sample of...

under what circumstances phenol forms phenolate with max yield