Q. A 4 cm tall candle flame is 2.0 m from a wall. You happen to have a lens with a focal length of 42 cm. For each location, what is height of the image?
Q. What are (a) x component and (b) y component of a vector in the xy plane if its direction is 329° counter clockwise from the positive direction of the x axis and its magnitude is 9.0 m?