Recent content by n05tr4d4177u5

so i got this HW prob, and i don't know exactly where to start, Oil flows steadily in a thin layer down an inclined plane. The velocity profile is u = [(density)(g)(sin theta) / Mu] [(hy - (0.5)y^2] express the mass flow rate per unit width in terms of density, Mu, g, theta, and h...

rewritten -39240 times the square root of (9 - x squared)

Can someone tell me what is the integral of (-39240)(9-x^2)^(1/2)

I have a HW problem dealing with an inclined immersed surface. I can work the problem just fine except this problem says that the gate weighs 800lbf, and and don't know what to do with this number. how does it come into play?

example , the integral of ydy = y squared/ 2

lol are u reallly an advisor, cuase its unbelievable youve never seen that before,

in a rectangles case, dA = dX dY if i have the rectangles width and it is 4 m, then dA = 4dY, which let's me integrate along y axis, now for a semicircle, how would i do that if dA = r dr d(theta)

imagine the top half of a circle. the origin lies along the bottom of the semicircle, and in the middle. y-axis up, and x-axis to the right and left. i think theta can only go from 0 to 180 degrees since it is a semi circle. Y = d(theta) R squared R = radius, integrate from 0 to R

y = d(theta) Y ^ 2 integrate from y=R to y= 0 Shape is semi circle

i don't know no i don't know, its been a while since i integrated a circle please help me, that's why I am asking, i haven't done that in years

also so what i did, was changed dr to dy, and now i need to change d(theta) which should be a number (like in the case of 4 m for rectangle), and it has to be in terms of pi, the shape is a semi circle

that doesn't really help my question here is an example of mine that i have suppose i hae a rectangle, in a rectangles case, dA = dX dY if i have the rectangles width and it is 4 m, then dA = 4dY, which let's me integrate along y axis, now for a semicircle, how would i do that if...

i have been told that dA=R dR d(theta), what does mean exactly in terms of pi. the shape is a semicircle. Does this mean that d(theta) is 180, or pi. Please give me an example.

Need a help on how to go about building a Laboratory scale using strain gages I need to build a scale with a working range of 2 to 200 gm, an accuracy of at least 2 gm, footprint of no more that 16 in sq, and use no more that 6 strain gages. I believe I need to set up the strain gages in...