# Search results

1. ### Internships in physics for summer?

Same applies for physics research programs. It's too late.

Usually, when you are transferring to be classified as a transfer student, you need a certain number of hours completed at the undergraduate level. Check with the college to see whether you will be classified as a transfer or incoming student.
3. ### Under too much stress I just zone out

How morbid of you..:smile:
4. ### The Hall Effect

If I move a strip of copper mechanically with my hand through a uniform magnetic field will their be a drift velocity? And if so will the drift velocity be in the same direction as the moving copper strip? What would the magnitude of the drift velocity be if this happens? Can you have a drift...
5. ### What does one do when this feeling becomes overwhelming?

Actually the word is spoken that way.. "Oxycontin" is the trade name for oxycodone which whozum is referring to.
6. ### Studying Thinking of studying physical sciences

That's an awesome post BioHazard. Thanks for sharing your wisdom
7. ### Kleppner's and french's mechanics, are there any other challenging books?

Are there any solutions to problems in the back of these books?
8. ### Capacitors, Electric Fields, and Dielectrics

That must be what he is thinking. DocAl, would this also apply to non parallel plate capacitors?
9. ### Capacitors, Electric Fields, and Dielectrics

That is the formula I explained to him. I don't see why he doesn't get it
10. ### Capacitors, Electric Fields, and Dielectrics

Do you know of anyplace that offers credible proof like in a book or an article? This was a test question and I argued with my physics teacher about it. He thinks the electric field will decrease.. where I do not and he said I am wrong. I would like to show him that the electric field...
11. ### Capacitors, Electric Fields, and Dielectrics

I have a question that is confusing me perhaps one of you can help me. If I hook up a constant potential difference to a capacitor and place a dielectric inside of it, will the electric field decrease even if the plate separation remains constant? I think that the capacitance will increase as...
12. ### Calc 3 homework problem need help!

Hello guys I am not sure if I am doing this right. If you could offer any advice or point out my mistakes I would appreciate it. Problem: Sketch the graph of the domain of f(x,y,z) = \frac{1}{x^2+y^2-z} Domain: (x,y,z) \in R^3 \mid x^2+y^2 does not equal z Graph: I set f(x,y,z) = 1 and...
13. ### Level Curves: Homework, need help!

I am looking for the domain, range, and graph of this level curvef(x,y)=\sqrt{x^2-1} I have the range, but the domain and graph I am unsure of. For the graph, I graphed on my paper x=1, you plug in one, z = 0 and x = 1 and y can be anything. Domain: I am unsure of but yes \mid x \mid \leq 1...
14. ### Level Curves: Homework, need help!

I am trying to find and graph the level curve f(x,y)=\sqrt{x^2-1} that passes throught the point (0,1), as well as its domain and range. I am not sure if my reasoning is right, so let me know if I got the wrong idea. For the graph I have x = 1 which is independent of y and is just a...
15. ### 2 Homework Problems

Thanks I see my mistakes!
16. ### 2 Homework Problems

How did you get convergent for x=-5/2? \frac{(-2)^{n}(-\frac{1}{2})^{n}}{\sqrt{n}} = \frac{(-1)^n}{\sqrt{n}} is a divergent p-series p<1
17. ### 2 Homework Problems

I found the series to be divergent at both endpoints. Is that what you got pbialos? AKG is he right about the first one? Thanks for the help
18. ### 2 Homework Problems

Ok say I want to find the power series representation for ln(5-x) it will be equal to ln(5)-\sum\frac{x^{n+1}}{(n+1)5^{n+1}}
19. ### 2 Homework Problems

Infinite Series Calculus 2 hw problem Hello. I need help finding the answer on two of these. #1. Find a power series representation for f(x)=ln(1+x^2) I have f'(x)=\frac{(2x)}{(1+x^2)} So I factor out 2x and have \frac{1}{(1+x^2)} which is a geometric series = \sum(-1)^{n}x^{2n} then...
20. ### If g decreases as h increases, then why does gravitational potential energy increase?

Any specific height you are looking at? We don't go flying towards the star because the gravitational effects from a star light years away is negligible compared to earth's.
21. ### The second question: Kinetic Friction

Yes, thanks for the correction!
22. ### The second question: Kinetic Friction

Yes, the change in x is 30m. Tenali, he is looking for the coefficient of kinetic friction. You can find the coefficient of kinetic friction using the kinematic equations as Tenali suggested, but that isn't the way the problem is meant to be worked, but it will work.
23. ### The second question: Kinetic Friction

Don't worry about accelerations. You can if you want but it will make the problem more confusing to you I imagine. It is just an energy problem. The thing to remember is that the f = (W \times {\Delta x}) = {\Delta KE} Also, remember f=\mu{mg}.
24. ### The second question: Kinetic Friction

The only horizontal force should be friction unless someone is pulling the sled-person system. Is it asking for an acceleration?
25. ### The second question: Kinetic Friction

The work done by friction must be equal in magnitude to the kinetic energy of the sled-person system but opposite in sign for the object to be at rest after displacing 30m. Knowing work is equal to Force \times Displacement you can then solve for friction which then allows you to obtain the...
26. ### Area Between Curves

Alright, I will go with that. Thanks!
27. ### Area Between Curves

On the second question are they wanting me to find the area under x-2 or the area above it? It seems it could be looked at either way.
28. ### Area Between Curves

Hey guys, I am curious if I am setting this up right. Could you take a look and make sure I am on the right path? I have three questions. 1) I am trying to find the area bound by y=x^2 and y=4x+5 Upper function y=4x+5 Lower function y=x^2 For my integral I have \int^{5}_{-1}4x-5-x^2...
29. ### Test Question (Potential Energy): Need help finding answer

Your equation will give me the exact same answer I got. mg(0.8 + 0) =.5kx^2
30. ### Test Question (Potential Energy): Need help finding answer

I can't figure out what I did wrong on this test question. A 4kg block is dropped from a height of 0.8m above a spring, k=120N/m. Find the maximum compression of the spring. I have the PE at the top is equal to KE at the bottom. PEtop=31.4J KEbottom=31.4J The potential energy in the...