Recent content by harrietstowe

Homework Statement http://img51.imageshack.us/img51/9563/chem3.png Homework Equations The Attempt at a Solution I know the answer has to be a or c because you need the ammonia to make this reaction happen but I don't know whether you would want to use 3-oxobutanenitrile or...

ok so let position of the CM be R and let's work in the x y z coordinate system Then R=[m(0,0,0)+m(2a,0,0)+m(4a,0,0)+3m(2a,2a,0)]/6m which simplifies to R=((4/3)a,(1/3)a,0) Then using the equation Impulse=(mtotal)(vcm) we can write: P=(6m)(vcm) vcm=p/6m Now to find the initial angular...

Homework Statement http://img221.imageshack.us/img221/4861/figure1h.png Mod note: Fixed the image link. Consider the rigid object shown in this image. Four masses lie at the points shown on a rigid isosceles right triangle with hypotenuse length 4a. The mass at the right angle is 3m...

Homework Statement A chain of length L and mass density σ kg/m is held in a heap. I grab an end of the chain that protrudes a bit out of the top. The heap is then released so that the chain can unravel with time. Assuming that the chain has no friction with itself, so that the remaining part...

It worked, thank you

I see will try, thank you

Homework Statement A current of 10.7 Amps is applied to a 1.30 L solution of 0.550M HBr converting some of the H+ to H2(g), which bubbles out of solution. What is the PH of the solution after 77 minutes. Homework Equations The Attempt at a Solution (10.7 C/s)(1 mol e/96485 C)(2...

Homework Statement Use the Divergence (Gauss's Theorem) to find the outward oriented closed surface (no boundary) for which the flux of F(x,y,z) = (16x-xz^2)i-(y^3)j-(zx^2)k is maximized. Homework Equations Gauss's Theorem The Attempt at a Solution divF = 16-z^2-3y^2-x^2 > 0 I think ?

Homework Statement Find the slope of the tangent line to the curve of intersection of the vertical plane x-y+1= 0 and the surface z=x^2+ y^2 at the point (1, 2, 5) . Homework Equations The Attempt at a Solution Normal Vector 1 is i-j Normal Vector 2 is 2i+4j-k Cross them to get...

its cylindrical to spherical and I figured it out

that is correct

Homework Statement Evaluate the following triple integral by switching it to spherical coordinates? The integrand is r dzdrdθ The limits for the inner integral are 0 to r The limits for the middle integral are 0 to 3 The limits for the outer integral are 0 to 2π Homework Equations...

Homework Statement Find the area of the part of the cylinder y^2+z^2=a^2 that lies inside the cylinder x^2 +y^2 = a^2 Homework Equations The Attempt at a Solution So the first thing I did was I solved for z from the first equation to get z = Sqrt[a^2-y^2]. I took the partial...

Ok I see. Thank You

Homework Statement Find the area of the part of the surface z^2 = 2*x*y that lies above the xy plane and is bounded by the planes x=0, x=2 and y=0, y=1. Homework Equations The Attempt at a Solution z = Sqrt[2*x*y] Sqrt[(partial z/partial x)^2 + (partial z/partial y)^2 +1] =...