Thank you all for your help. I had looked into this quite a bit, but I wasn't sure if there were other solutions that I hadn't some across. I was thinking that I would have to go through a service provider to accomplish this task and it seems that's the only viable option. I had considered...
I'm in the process of prototyping a monitoring device. When certain conditions are met, I need to send a SMS or comparable type of message to a mobile phone. My issue is that I don't really have any ideas on how to do that. I've tried to find answers in other places, but I haven't been able to...
So from the center to the edge of the sphere (R = 1), I know the enclosed charge should be:
from 0 to 1, ∫ρ(r)4(pi)r^2 dr = 4pi[(1/4)r^4] from 0 to 1
= pi
When put into E(r), this does give k(pi)/r^2, but I'm confused about this result because...
Find the electric field for a non-conducting sphere of radius R = 1 meter that is surrounded by air in the region r > 1. The interior of the sphere has a charge density of ρ(r) = r.
The answer is k(pi)/r^2, but I can't seem to get that. My problem is with finding the enclosed charge. I've tried...
I'm currently studying Electrical Engineering, but I like Physics a lot more. The only reason I didn't initially major in Physics was that Engineering was much more employable. This may not be a great question, but what opportunities are available to someone who has a masters degree or higher in...