Recent content by lynn32

Can I ask a couple more questions? These are giving me some trouble. (d) What is the magnitude of A x (B x A) if there is an angle \theta between A and B? Is this enough of answer or do I need to go further. B \times A=BAsin \theta A \times (B \times A)= A(ABsin \thetasin \theta)...

It was \int_0^5 x^{-1}dx this integral and not the simpler one. For the vector question, how did you get from (A-B).(A-B)= |A|2- 2A.B+ |B|2 to 2|A|2- |A|2cos(θ) I don't understand where the cosine comes from. On a side note, HallsofIvy, I noticed that you teach at Gallaudet...

Hi, I have a few summer assignment questions, if someone could help me taht would be great. 1. What are the units of a unit vector? -I think that a unit vector has no units or is the question talking about a different type of units. I'm just confused. 2.Evaluate the following definite...