15. read the following statement. shari rode the bus to work. what is the negation of this statement? shari did not go to work. shari may not have ridden the bus to work. shari did not ride the bus to work. shari rode her bike to work.

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters