Recent content by Berries

I am able to initiate video chats on iChat with one person, but when I try to invite another, it doesn't work. I should be able to initiate a chat with multiple people because I have a Macbook Pro, but just recently, it says that I can't.

...very confused.HELP!? Confused with the equations and when I would use the different law. I am preparing for an exam and don't understand the concepts.