Recent content by wave41

thank you :smile:

The problem is that I have a very bad math backround...I am asking if I have to integrate that? Keeping V(o) and R outside the integral...I have not done integrals yet so I am having trouble with it...I have missed math (meaning didn't study it ) from basically 4th grade to 9th so to catch up on...

I have read in the official physics magazine that there is a great need for physicists right now, I have even seen salaries offered as high as 90 thousand a year...

I have a question I wanted to ask, or more like your opinions? I have read about the new book that rescently hit the book stores shelves, called Out of Gas. The books talks about the fact that we will run out of oil in less then a decate, which scientists say will not happen that soon. And also...

Hello everyone...I need help to start on a problem which states that V(r) =V(o) r^2/2R^2...I neeed to find E(r) when R and V(o) are constants...so from defention E= dV/Dr? This is the part I am not sure how to move on..I have to integrate the equation they gave me keeping the V(o) and R as...

thanks :smile:

sorry I have another dumb question...Since the particle's PE is zero at infinity, so there is really no change and it is just the negative of the result I found at the origin where the particles is no?

I have another question about this problem...there is another part asking for the work done by electrical forces if the proton at the origin is moved from the origin to infinity?? Is it just the negative potential energy of the proton at the origin? Thank you

Thank you :smile:

Hello everyone, I need alittle help with an assignment...I am given two charges one along the y-axis and one along the x, and I am asked to find the electric potential at infinite distance...I found the electric potential at the origin, but I am unsure about the eletric potential at...

What I have done so far was to equal the two formulas and then simplify them...I think I got it but I am not sure about it...And about the second part, how can I make the changes so when the masses are different? I too the Coulomb`s law and Kpeler`s third law for gravitation... T^2= 4pi^2/Gm...

same here Hey! I have got the same problem right now in my book! Which book are you guys using? I know where the rest comes from, I am just not sure how to intigrate it! I think you have to equal the two formulas Kepler's third law T^2= 4 pi^2/Gms r^3 and coulomb's law...I have gotten half...

wow thank you for the fine discription and history, we were briefly learning this in chemistry, I wanted to know more about the equation because our teacher did not tell us anything further about it because it was too complicated and she didn't know how to do it. So I though of looking up this...

I have a question about mathematical induction, I know that this stuff is really easy I just can't seem to get the point here. I lost a lot of math alegbra more likely to say because of moving and now I am having trouble with algebra in my first semester of college. I don't really need anyone...

Thank you for the welcome! I was looking for a place where I can ask the many questions that I come up with! :smile: Thanks for the link!