Recent content by xzi86

Not really a standard question, just need some clarification. So I saw this in the textbook: 2pi/radian = 0.110/degree What does this mean? Does it mean 2pi equals 0.110 degrees? But I don't think that's the case. I'm trying to find out the value of radians from this equation. Would you...

I have to analyze this airfoil at 4 degrees: "Consider a wing of span 15 feet. The root chord is 2.381 feet. The tip chord is 0.953 feet. The airfoils used are NACA 65-210 sections, which have a zeo-lift angle of –1.2 degrees. The wing is untwisted." Now I've got a MATLAB code to analyze this...

Homework Statement Consider a velocity field where the radial and tangenetial components of velocity are V_r=0 and V_theta=cr, respectively, where c is a constant. Obtain the equations of the streamlines. Homework Equations x=rcos(theta) y=rsin(theta) The Attempt at a Solution I...

Homework Statement Given the following stream function: ψ=C(sin(theta)/r) Find the radial and tangential velocity components. Homework Equations ? Don't know any The Attempt at a Solution Absolutely no idea how to even begin. Do I take the integral or something? Any help...

Homework Statement Consider the cross section of a sluice gate, which is a device for controlling the flow of water in channels. Determine the force on the gate per unit width of the gate. Hint: think of each line as a surface, with the length given above, and 1 foot of depth in the direction...

Homework Statement A pipe tapers from a diameter of 0.5 m at the inlet to a diameter of 0.25 m at the outlet, and turns by an angle of 45 degrees. The gauge pressure at the inlet and the outlet are 40000 N/m2 and 23000 N/m2, respectively. The pipe carries oil, with a density of 850 kg/m3, at a...

so my method was good except i forgot to consider x is negative

Homework Statement (3x+1)/(x+4)>=1 Homework Equations The Attempt at a Solution (3x+1)>=(x+4) 2x>=3 x>=3/2 But this is wrong?? Why?

Homework Statement A point P starts from rest and accelerates uniformly (meaning x'' = constant) to a speed of 88 ft/sec after traveling 120 ft. Find the acceleration of P. Homework Equations x=position v=velocity=dx/dt a=acceleration=dv/dt The Attempt at a Solution The...