How Do I Approach Potential Energy and Electric Fields in Physics?

notojosh
Messages
9
Reaction score
0


I've no idea where I need to start. please help me!
 

Attachments

  • forum.jpg
    forum.jpg
    15.9 KB · Views: 476
Physics news on Phys.org
Since:

f(x,y) = (\frac{\partial V}{\partial x}, \frac{\partial V}{\partial y})

then:

dV = dV_x + dV_y = f(x,y) dx + f(x,y) dy

Can you integrate to find V?

AM
 
I don't know because f(x,y) is not defined. Can you give me more tips?

Josh
 
notojosh said:
I don't know because f(x,y) is not defined. Can you give me more tips?

Josh

It is not defined? look at your own picture!
 
oops... Ok

I found out V=-tan^(-1)(x/y)+tan^(-1)(y/x)+C where C is arbirary constants.. And..
now what? should I take a differentiate V as the upper equation says so is that basically asking two equations are commute? ...
 
Hi, I had an exam and I completely messed up a problem. Especially one part which was necessary for the rest of the problem. Basically, I have a wormhole metric: $$(ds)^2 = -(dt)^2 + (dr)^2 + (r^2 + b^2)( (d\theta)^2 + sin^2 \theta (d\phi)^2 )$$ Where ##b=1## with an orbit only in the equatorial plane. We also know from the question that the orbit must satisfy this relationship: $$\varepsilon = \frac{1}{2} (\frac{dr}{d\tau})^2 + V_{eff}(r)$$ Ultimately, I was tasked to find the initial...
The value of H equals ## 10^{3}## in natural units, According to : https://en.wikipedia.org/wiki/Natural_units, ## t \sim 10^{-21} sec = 10^{21} Hz ##, and since ## \text{GeV} \sim 10^{24} \text{Hz } ##, ## GeV \sim 10^{24} \times 10^{-21} = 10^3 ## in natural units. So is this conversion correct? Also in the above formula, can I convert H to that natural units , since it’s a constant, while keeping k in Hz ?
Back
Top