Recent content by haxtor21

Homework Statement Find the center of mass of the solid of uniform density bounded by the graphs of the equations: Wedge: x^2+y^2=a^2. z=cy(c>0), y>=0, z>=0 Homework Equations Mx=int(y*p(x,y) dA) dA=area of integration, dydx/dxdy The Attempt at a Solution I set up all the...

Homework Statement I am doing a lab report where I have to find a maximum range and at what angle it occurs. For the range equation I am using a range equation with the initial velocity, theta, g and h as variables. There clearly is a problem since my units do not match up, and I can't find...

well i guess that would be Δx=.5 (g sin(θ)) t^2

general form: x= x-node + v-node (t) + .5(a-x)t^2 in which case a-x is -g

that would be y= a+ ax + ax^2 and y= bx+c I figured out the fit for my data points, with the x-t being a polynomial and x-tt being a linear fit. Now what am I supposed to do with them? How do these and my initial equations relate?

Homework Statement I am doing a lab report in which I am supposed to plot 2 graphs from which to approximate g. One is Delta X vs t and one is delta X vs t^2. The data represents the time it takes for an object to travel a certain distance interval (in my case a cart going down an inclined...

How do you know that is the normal vector? is there a proof sort of thing somewhere?

So you are saying that I can have (1/sqrt(37))<-1,6> or (1/sqrt(37))<1,-6> for b) even though the book says the answer is (1/sqrt(37))<6,-1>? So then I would guess the +- reffers to the direction of the vector compared to what it was previously, but it has no relationship with the signs...

Ok, so far I have a) done. How exactly am I supposed to do this? The back of the book says the answer is +-(1/sqrt(37))<6,-1>. Where does the +- come from and how did they get that answer (looks iverse. According to what you said, I would just stick a negative in either component (?) ).

Homework Statement Find a unit vector (a) parallel to and (b) normal to the graph of f(x) at the given point. Then sketch a graph of the vectors and the functions. Function: f(x)=xx Point: (3,9)Homework Equations The Attempt at a Solution...

Well I am only going to be taking 3 easy classes at my high school ( I exhausted all of the hard classes basically) and 3 classes at college. And I don't really have any relationships with my teachers. I am quiet and shy. I don't think I can get my grades up that significantly. Should I retake...

So I am screwed basically. What can I do in order to transfer at cornell ? I received emails from them encouraging me to consider them for transfer admission (through phi theta kappa). I have one semester left of high school. Should I just not care about it, or what should I do ? retake the...

Uhm... let me rephrase that. I will be grduaring high school with ~60 credits of community college credit, including Calc 1,2,3, diff eq, phy 1,2 and the other rubbish classes. GPA 3.9. The thing is i just let my high school slip, since I just hate the place. I have a 3.0 HS GPA and a 21...

Does graduating high school as a college junior give you any advantage whatsoever regarding transferring to university? considering that you had no real ECs except work and hobbies.

I can't seem to understand this statement...