A supermarket sells rolls of aluminum foil, plastic wrap, and waxed paper. (a) Describe a capacitor made from such materials. Compute order-of-magnitude estimates for (b) its capacitance and (c) its breakdown voltage.

2 Dimensional Motion Problem solving strategy Motion in the X direction is independent of motion in the X direction Break the problem into two parts, on for the X motion and one form the Y motion Handle each part like a 1D problem Express y as a function of x and t for each of the two objects Combine the equations to eliminate unknowns Force and Motion 1: Newton’s Laws of Motion Newton’s Laws of Motion: How to describe objects in motion A theory of Gravity Newton’s First Law If the body is at rest, it will remain at rest: static equilibrium If the body is in motion, then its velocity remains constant: dynamic equilibrium. The key condition is Zero net force. Newton’s Second Law The acceler