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26 | 80 | By Engr Jaydee 3 months 1 week ago |
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74 | 207 | By fitzmerl duron 1 year ago |
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3 | 6 | By Jhun Vert 4 years 5 months ago |
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75 | 175 | By Jhun Vert 1 year ago |
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7 | 34 | By fitzmerl duron 10 months 3 weeks ago |
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46 | 86 | By inzenyrp 2 months 3 weeks ago |
Unanswered Posts
Find the complete or particular solution of the followiing D.E.
1. y(x^2+xy-2y^2)dx+x(3y^2-xy-x^2)dy=0
2. (x+ysin y/x)dx-xsin y/x dy=0
Design a rod and beam,with given stresses.
Hello all guys ! Can somebody please explain me how to solve this problem,i got exam which is coming closer and closer with every single day.Probably the problem will be easy for you,but I am new to this science (3-th semester in uni,and this things are new to me)So here is the task,from the exam.
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Differential Equation
find a general solution
dx/dy =[ -2x (csc 2y – 2x3 cos 2y)] / sec 2y
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Integral: Can anyone tell where does -2/5 came from?
Can anyone tell where does -2/5 came from? pleaaaaase
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Dynamics Kinematics
please help!
A ball is thrown down the incline strikes it a a distance s = 254.5 ft. If the height h = 64 ft. above the point of release, compute its initial velocity abd inclination theta.
(there is a given 3 for opposite, 1 for adjacent)
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Engineering Economy
Juan plans to raise a new building of 1 million. He raise the building by issuing 10%, 20 yr bond that would pay one hundred fifty thousand interest per year an repay the amount of maturity he can least it for Php 140,000 per year. First payment being due one year from now. The building has an expected life of 20 yrs. ignoring effects on income tax, what is the difference between buying the building and leasing it?
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BES 5
A structural steel column with Fy = 250 MPa
having an unbraced length of 3m is to carry a total axial load of 1800 kN. Which of the following sections is most economical (lightest ) for the given loads. The comumn is hinged at both ends.
Section A: Area = 13,800mm2 Ix= 293.63 x106mm4Iy= 67.59 x 106mm4
SectionB: Area = 11,550 mm2 Ix=177.04 x 106mm4Iy=39.14x 106mm4
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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
Normal shock wave
1. Consider a NSW with a downstream-upstream temperature ratio of 3.5 what is the mach number upstream and downstream of the shock? Show your solution.
2. The flow just upstream of a NSW is at SSLC and the mach number downstream is 0.6152 determine the pressure, temperature, density, velocity, and the total pressure and temperature. Show your solution
3. The mach number behind of a NSW is 0.4752
What is the mach number in front of the wave and the pressure ratio across the shock? Show your solution.
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