If anyone is willing to help me out by answering those 5 questions ASAP (by Monday, Feb. 7th) then I will gladly pay them $1 per problem answered. I would also gladly donate to "Support Physics Forum". I am assigned over 100 problems for physics weekly and these are the ones that I cannot figure out. I am currently taking 3 science classes and 1 math class(Physics, Organic Chemistry, Biology, and Linear Calculus) and I simply do not have much spare time to keep attempting these problems. If someone could also write out and explain how the problem is done, that would greatly help me out.