A proton orbits a long charged wire, making 1.30*10^6 revolutions per second. The radius of the orbit is 1.20cm.
What is the wire's linear charge density?
- q E = m w^2 r
- 9*10^9 [2 λ /r] q = m w^2 r
The Attempt at a Solution
λ = linear charge dens
w = 2pi/period = 2pi/T
w = d theta/dt = 1.4* 2pi /1
I'm confused on how to solve for λ here though. Can anyone help me out?