# Search results

1. ### Archived Quick circuit help/confirmation

Homework Statement This should be a really easy circuit, but I need to see if I have it done right. 1V source, 1A source and a 1 Ohm resistor in parallel (forgot to write the 1 Ohm resistor on the image.) Find the power of each element. http://img403.imageshack.us/f/circuit1.jpg/...
2. ### Kirchhoff's Rules

Homework Statement Sorry for edit, accidentally posted. Circuit is show in my attachment. I have 3 loops with three unknown currents. 8 Ohms of resistance down the left side. 6 Ohms of resistance and a 4V battery down the center. 4 Ohms of resistance and a 12V battery down the right side. I...
3. ### 150th Anniversary of the Origin of Species

http://www.youtube.com/watch?v=oM0oBuhTLRI[/youtube] http://www.youtube.com/watch?v=oM0oBuhTLRI" As some of you may be aware, the 150th anniversary of Charles Darwin’s Origin of Species is later this month, the 24th to be precise. In one week from today, a special abridged edition of the book...
4. ### Curvature, More of a cross product question really.

I've been using various methods of finding curvature, and using the forumla K=\frac{||\vec{r}'X \vec{r}''||}{||\vec{r}'||^3} I took the cross product of my two vectors and came up with (just assume this is correct, if my question isn't answered i'll post all related work)...
5. ### Air Cooler/Conditioner Question

So, here’s the situation. My roommate and I live on the third floor of our apartment complex. As you walk into the building and begin to climb the stairs to the third floor you would notice a tremendous increase in temperature regardless of the weather. We have air conditioning but its not...
6. ### Schools 'University' of Phoenix?

What are your collective thoughts about the “University of Phoenix”? My brother recently enrolled and is set to start classes on April 21st. From what I understand they have an online program called Axia and would only required to meet on campus on the first and last days of each semester...
7. ### Improper Integral

Improper Integral [Solved] Homework Statement \int_{0}^{\infty} (x-1)e^{-x}dx Homework Equations Integration by Parts Improper Integrals The Attempt at a Solution \lim_{R\rightarrow \infty} \int_0^R~xe^{-x}-e^{-x}dx Let u = x du = dx Let dv = e^-x...
8. ### Center of a Sphere in R^3

Center of a Sphere in R^3 I need to find the center and radius of a sphere given the equation: x^2 - 4x + y^2 + z^2 = 0 I would like to hope it would be as easy as just adding 4x to both sides, but having a variable as the radius probably isn’t correct. On the other hand, I...
9. ### Quotient rule problem.

Homework Statement In exercises 7-12, use the Quotient Rule to differentiate the function. 9) h(x) = \frac {\sqrt[3]{x}}{x^3+1} Homework Equations Quotient Rule The Attempt at a Solution I'm trying to figure out basic calculus over the summer in preparation for class...
10. ### Course outline for self study

Greetings everyone. I’m interested in spending some of my free time this summer trying to teach myself Calculus in preparation for college this fall. I spent a great deal of time searching for used textbooks on amazon.com and decided to go with “Calculus” 7th edition by Larson Hostetler and...