Need help with General Physics II homework questions

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Homework Statement


See attached


Homework Equations


N/A


The Attempt at a Solution


I tried to do some of this, but I'm not even sure where to start. I'm so confused. I don't have the textbook yet neither as it hasn't come in the mail, so I can't reference it. My professor has a very heavy Indian accent and just does straight verbal lectures, so that doesn't help when taking notes.

Can somebody please help me answer these questions? I think if somebody were to show me how to do a couple of these (1, 2, 6, 7) then I can try to figure out the other ones.

Thank you in advance.
 

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Pick one question and then try to solve it and ask specific questions. Don't throw a whole homework sheet at us and ask for a lecture.
 
For qn 1: Use the definition of electric flux. Think about how to maximize the flux given a unidirectional field and a flat surface.

Qn 2: You need to use a particular law here. The set-up is symmetrical enough to apply it. Just think of how to find the parameters given in the statement of the law.

Qn 6: Again, think in terms of the law you have to use for qn 2.

Qn 7: Yet again think about the implications of a charged conductor in electrostatic equilibrium. Also you might want to use the same law for qn 2.
 
Like I said, I tried to work on it. I couldn't solve it. I turned it in and got them wrong. I got 1 right, though.