Net Present Worth analysis
How do you calculate NPV for a model with single payment compound amount scenario.
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Unanswered Posts
Differential Equation: [ e^(2y) - y cos (xy) ] dx - y(1 - x^2) dy = 0
Please help me again to solve this.
(e2y-ycosxy)dx-y(1-x2)dy=0
mechanices dynamic questions: resistance to take off
the jet fighter has a mass 6450kg reguries 10 seconds from rest to reach its take off speed 250km/hr under the jet thrust t 48KN compute resistance "R" during take oof?
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Differential Equation
(xy + (y/x) + (3/x) -2) dy + y2 dx = 2(1+(y/x))dx
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Fluid mechanics
A hollow sphere 6 in inside diameter is rotated on a cable at 100 rpm. If the cable is 6 ft long and makes an angle of 30 degrees with the horizontal, what is the pressure in the center of the sphere if it is full of water? what is the equivalent specific weight at that point?
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Stuck finding out the manual solution for finding x in this logarithmic equation
Good day,
I got stuck finding the manual solution for this problem without relying to the solve function of Casio calculator
The original equation was
[(1+x)40] -1 = (181205.95/3000)x
Then I tried using properties of logarithm and I simplified it to this equation:
[ln(181205.95/3000)]/40 = ln(1+x) - (1/40)[ln(x+3000/181205.95)]
0.102526 = ln(x+1) - 0.025ln(x+0.0165557)
Answer: x = 0.02
differential equation: given $f(x)$, show that $f(x)$, $f'(x)$, and $f''(x)$ are continuous for all $x$
Let
f1(x) = 1 + x^3 for x ≤ 0 ,1 for x ≥ 0
f2(x)= 1 for x ≤ 0, 1 + x^3 for x ≥ 0
f3(x)= 3 + x^3 for all x.
show that
a) f, f' , f", are continous for all x for each f1, f2, f3.
Beam Deflection
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hi please help me with my assignement.
this beam made of steel with moduus youg of 300 gpa, cross sectional area A1 =10.10^-6 m2
A2 = 20. 10^-6 m2.
length L1 = 2m
Length L2 =1,8 m.
at he level that is very rigid ring mounted to apply the load F=8 KN.
questions :
1.calculate reaction pedestal points A and B
2. stresses that ocur in cross section A1 and A2
3. the displacement Point C.
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Horsepower Required and Speed
Calculate the HP needed to transport a steel bucket weighing 66,759 kg supported a 703 meter stainless steel cable at a steep incline of 84 degrees.
The trip could not take more than 10 minutes.
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is it not…