Electric charge and Electric Field

[rdoug 33]

[?] I am working out of the Physics Fifth Edition by Giancoli, I am having trouble with Chapter 16, questions 19,29 and 49.

I took Physics One about 6 years ago and can't seem to remeber the basics to figure these problems out. Can anyone help me?

Thanks,
Ron

[HallsofIvy]

And you expect us to have that textbook open in front of us?

If you want assistance on homework, please post the problems themselves and tell us what you have tried and what ideas you have that apply to those problems.