Recent content by aaronfue

Homework Statement Use LU factorization with partial pivoting for the following set of equations: 3x1 - 2x2 + x3 = -10 2x1 + 6x2 - 4x3 = 44 -8x1 - 2x2 + 5x3 = -26The Attempt at a Solution I made an attempt to solve this problem, but my answer was wrong compared to the book. There was an...

Why is the height "/1000"? Homework Statement In the attached example problem, why did the height, originally in millimeters then converted to meters, be divided by 1000? Note: This is a thermodynamics related question? Or at least from a thermo textbook. I thought that the units...

Homework Statement Two pipes are connected by a manometer shown in the figure. Homework Equations FR = \gamma*hc*A yR = yc + \frac{I_xc}{y_c*A} The Attempt at a Solution PB - PA = \gammawater*1.1m - \gammaFluid*0.6m + \gammawater*0.8m = 3.33 kPa I checked my answer and it...

Homework Statement During the calculation of yR in fluid mechanics problem, hydrostatic force on a plane surface Homework Equations yR = yc+\frac{I_xc}{y_c×A} The Attempt at a Solution I can see how it is calculated but I've read through the chapter and I don't see how it is...

Need help with equilibrium equations -- ASAP Please Homework Statement I'm studying for a final that I'm taking tomorrow and am stuck on the following: Calculate Kc for the reaction: 4NOBr (g) \Leftrightarrow 4NO (g) + 2Br2 (g) given the following information: 2NO(g) + Br2 (g)...

Homework Statement I'm working on a practice exam and we have a question asking us to choose the solution that has the lower pH (most acidic). a) 0.1 M NaNO3 or 0.1 M KCH3CO2 b) 0.1 M NH4Br or 0.1 M NClO4 c) 0.1 M Fe(NO3)3 or 0.1 M CaCl2 d) 0.1 M NH3 or 0.1 M NaI e) 0.1 M NH4CH3CO2...

Homework Statement The position of the L-shaped rod shown is controlled by a cable attached at point B. Determine the angle, β, in terms of θ.The Attempt at a Solution From the FBD attached, I was able to get: β = tan-1(\frac{0.24sinθ - EF}{0.24cosθ+0.32}) How can I determine what EF is...

Thanks for all of the input. I was told to assume that point E was located at the point where the web meets the flange. Great drawing!(sarcasm) Got this one wrong.

Homework Statement I am given the following equation: 2NO (g) + Cl2 (g) \rightleftharpoons 2NOCl (g) Kp = 6.5×104 PNO = 0.35 atm PCl2 = 0.10 atm I need to calculate PNOCl. Homework Equations Kp = \frac{(P_{NOCl})^2}{(P_{NO})^2*(P_{Cl_2})} The Attempt at a Solution I...

Homework Statement Determine the shear stress, \tauE, at point E that corresponds to the maximum shear force along the length of the beam. V = 25kN b= 55 mm c=150 mm d=110 mm e=65 mm Homework Equations \tauE = \frac{V*Q}{I*t} Q = \bar{y}'*A' The Attempt at a Solution I was able to find...

I understand now. Thanks!

Homework Statement I am having a hard time understanding the length measurement in the problem. We went over this example in class and the length, L, was something I didn't realize until now. Question: A 6-ft-long steam pipe is made of A-36 steel with σ=40 ksi (yield stress). It is...

Homework Statement A locked door handle is composed of a solid circular shaft AB with a diameter of b = 108mm and a flat plate BC with a force P = 69N applied at point C as shown. Let c = 532mm , d = 126mm , and e = 153mm . Homework Equations \taumax = \frac{Tc}{J} T = internal torque...

I'm eventually going to find the enthalpy of vaporization of water. The pressure of the cylinder is what needs to be determined which is asked in the first question. The value of h is given in the first question in parenthesis. I was able to calculate the cylinder pressure. I just needed...

Homework Statement I'm trying to calculate the air pressure from some data that I have. #1. Calculate the cylinder pressure. (barometric pressure=765 mmHg, h=35mm) #2. Calculate the moles of air using low temperature and volume and cylinder pressure above. (Low temp=50.0deg Celsius...