Q. A real object is placed at the zero end of a meterstick. A large concave mirror at the 100.0cm end of the meterstick forms an image of the object at the 70.0cm position. A small convex mirror placed at the 20.0cm position forms a final image at the 10.0cm point. what is the radius of curvature of the convex mirror?

Q. An issue of concern to those treating individuals with mental disorders is whether the therapists need to "fix" the brain or the mind. At this time, what are the explanations and treatments that are in the ascendance.