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Unanswered Posts
Basic Cal.
Hi! I need help with these.
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bes 5
A wide flange section for a 5 meter long column ( hinged at both ends ) has the following properties :
Cross sectional area: 8,000 mm2
Radius of gyration, rx= 100mm
Radius gyration, ry= 50mm
Modulus of elasticity, E = 200,000 MPa
Determine the Euler critical load
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differential equation: Show that if f and f' are continuous on a ≤ x ≤ b then f and f' are linearly independent on a ≤ x ≤ b
Show that if f and f' are continuous on a ≤ x ≤ b and f(x) is not zero for all x on a ≤ x ≤ b,
then f and xf are linearly independent on a ≤ x ≤ b.
First Order Differential Equation
find the general solution
2y ln y dx - x (1 + 2x ln y) dy = 0
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DYNAMICS
A balloon rises from the ground with a constant acceleration of 4ft per sec^2. Five seconds later, a stone is thrown vertically up from the launching site. What must be the minimum initial velocity of the stone for it to just touch the balloon? Note that the balloon and stone have the same velocity at contact.
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equations
2xy' + y³ e^(-2x) = 2xy
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normal stresses
patulong po sa sistuation 1, papaano po yung gagawin sa wind pressure (KPa)
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Differential Equation
(xy + (y/x) + (3/x) -2) dy + y2 dx = 2(1+(y/x))dx
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