Recent content by ramb

Hi, My differential equations professor wanted us to think about this problem: How would you go about modeling the rate at which water raises on a paper towel dipped into a puddle with fixed water level. I figure this would be a differential equation, but I'm not sure as to the form of...

So how do you all learn/understand and be able to recall the material with using the least amount of time? How do you approach the material, how do you practice, what do you ask yourself when understanding? I'm currently in an E and M calculus based physics class, and we've been going...

1. Nothing's wrong with your mind, we are born in a 3D world, we can't fathom to understand a fourth dimension physically. BUT. 2. My professor introduced the idea of 'temperature' for visualizing 3D in 2D space, meaning you write numbers on an xy plane for z, so translating this idea to...

Homework Statement I have two surfaces, a cylinder and an ellipsoid. I want to find the volume bounded by those two surfaces. The sufaces are: S x^{2}+y^{2}=4 and M 4x^{2}+4y^{2}+z^{2}=64Homework Equations reparameterize it to get it in the form: \int\int_{D}(S-M)dA If you do this and...

do what i said on my post after that, because if you have the derived vector equation, you need to plug in a t value

oh I see, so with the time it took in the x direction, you used that time in terms of v,d,h,theta to put it in the y equation, since that's the one where the time in air matters. So after all that, the only thing is solve for V?

Thanks, so why did you substitute the t, and where did you get the C from?

The landing point is: \frac{H}{tan(\theta} Let L = \frac{H}{tan(\theta} With the equation \frac{1}{2}at^{2}+v_{i}t+d_{i} I separated all of it to x and y components and got: v_{i}t=-\frac{at^{2}}{2}+d_{f} then v_{i}=-\frac{at^{2}}{2t}+\frac{d_{f}}{t} so...

Homework Statement A bike is jumping between two ramps. The ramps are a height H , both with angles \theta and separated by a distance D. If he landed halfway down the landing ramp find the speed at which he left the launching ramp in terms of H, \theta and D. Homework Equations 1/2...

I say you should try to figure out what value of t makes that point. Once you do that you can derive that vector equation, then with the derivative you can find the slope at any given point. With that slope you can find the equation of the line.

1. Homework Statement [/b] Use the transformation that takes the unit square to a triangle to compute the integral \int\int_{B}2x+3y dA Where B is a triangular region with vertices (0,0), (5,2), and (3,4). The Attempt at a Solution What I did was I drew the region on an xy...

Hi, thanks for your responses. I understand that I can use Halls of Ivy's method once I parameterize x and y, but I am still confused about an equation of a circle in 3D space, the fact that it's tilted in 3D will make projections on x y and z all ellipses. Must I put the equation in cartesian...

Hi all, I'm quite new here, but it's been a while since I've been browsing through these forums for past answered questions for calculus and physics, but now comes the time where I'm the one needing help that's not been questioned yet. Homework Statement Find some* vector funcion r with...