In what way do the sacraments as a whole reflect what the Church is?
In: Psychology
In: Accounting
Consider the low-speed airflow over the NACA 0012 airfoil at low angles of attack. The Reynolds number based on the chord is roughly Rec = 2.88 × 10^6. This flow can reasonably be modeled as incompressible and inviscid. The initial input value for your simulations is provided on the bottom of this assignment. Your need to generate a report to give background introduction, and address the following issues: (inlet Velocity: 1.5 Attack angle: 5)
1. Incompressible, Inviscid Model: Explain why the
incompressible, inviscid model for this flow should yield lift
coefficient values that match well with experiment but will yield a
drag coefficient that is always zero.
2. Boundary Value Problem: What is the boundary value problem (BVP)
you need to solve to obtain the velocity and pressure distributions
for this flow at any angle of attack? Indicate governing equations,
domain and boundary conditions (u = 0 at a certain boundary etc.).
For each of the boundary conditions, indicate also the
corresponding boundary type that you need to select.
3. Coefficient of Pressure: Run a simulation for the NACA 0012
airfoil based on the initial conditions assigned to you with a mesh
with 15000 elements and a mesh with 40000 elements. Plot the
pressure coefficient obtained from FLUENT on the same plot as data
obtained from experiment. The experimental data is from Gregory
& O’Reilly, NASA R&M 3726, Jan 1970 and plot is provided in
PDF format for you to digitize in Excel. Follow the aeronautical
convention of flipping the vertical axis so that negative Cp values
are above and positive Cp values are below.
4. Lift and Drag Coefficient: Obtain the lift and drag coefficients
from the FLUENT results on the two meshes. Compare these with
experimental or expected values (present this comparison as a
table). For example, the experimental values for 10 degree angle of
attack are: Cl = 1.2219; Cd = 0.0138.
In: Mechanical Engineering
Decide on the staffing policy you will use for top-level managers for a small UK company and give your rationale for this policy using the UK Labour Act include the following elements: Working hours, Compensation package, Termination, Holiday and Sick Leave
In: Operations Management
Fifteen students from Poppy High School were accepted at Branch
University. Of those students, six were offered academic
scholarships and nine were not. Mrs. Bergen believes Branch
University may be accepting students with lower ACT scores if they
have an academic scholarship. The newly accepted student ACT scores
are shown here.
Academic scholarship: 25, 24, 23, 21, 22, 20
No academic scholarship: 23, 25, 30, 32, 29, 26, 27, 29, 27
Part A: Do these data provide convincing evidence
of a difference in ACT scores between students with and without an
academic scholarship? Carry out an appropriate test at the α = 0.02
significance level. (5 points)
Part B: Create and interpret a 98% confidence
interval for the difference in the ACT scores between students with
and without an academic scholarship. (5 points)
In: Statistics and Probability
WXY Inc. declared a dividend on July 27, 2004 to be payable on September 10, 2004. The list of shareholders who would be entitled to this dividend would be prepared on August 10, 2004.
a) Identify the key dates involved with dividend payment (4 points)
b) If Tom bought some shares on August 7, 2004, would he have received the dividend declared for this period? If not, who would receive it? (3 points)
c) You buy a share of stock before the ex‐dividend date for US$15. The dividend declared is US$1.50 per share. Ignoring the effect of taxes, does the value of your investment increase after the ex‐dividend date? Does it decrease? Why? Why not? (3 points)
In: Finance
Please prove American inequality boundary in the options market.
In: Accounting
Please prove American inequality boundary in the options market.
In: Finance
Multivariable calculus
Evaluate: ∮ 3? 2 ?? + 2???? using two different methods. C is the boundary of the graphs C y = x2 from (3, 9) to (0, 0) followed by the line segment from (0, 0) to (3, 9).
2. Evaluate: ∮(8? − ? 2 ) ?? + [2? − 3? 2 + ?]?? using one method. C is the boundary of the graph of a circle of radius 4 oriented counterclockwise
In: Math
(a) Find all positive values of λ for which the following boundary value problem has a nonzero solution. What are the corresponding eigenfunctions? X′′ + 4Xʹ + (λ + 4) X = 0, X′(0) = 0 and X′(1) = 0. Hint: the roots of its auxiliary equation are –2 ± σi, where λ = σ2.
(b) Is λ = 0 an eigenvalue of this boundary value problem? Why or why not?
In: Advanced Math