do lab writing expectations found in the lab writing picturespurpose section , theory section, procedure, questions,conclusion(zoom in to read pictures)good luck thank you did

A dielectric sphere of radius R carrying a total charge Q with a charge density distribution (here symbol ro ~ r it's has negative one ) I don't know how I can type it.. where r is the distance to center of the sphere.1 Find the electric potential and field inside and outside the sphere and sketch a digram to show how the potential and field vary with r.2. If two cylindrical holes of radius of A are cut through two orthogonal diameters of the sphere, write down the general form of the solution of the electrical potential everywhere due to the sphere in terms of legendre polynomials and /or sphererical harmonics . Make sure you draw a diagram and specify the coordinate you are using.please explain to me clearly this question step by step

With what properties of sound does a bat use to navigate and hunt insects? Discuss how a blind person could use sound to “see”his or her surroundings. (Hint: Do an internet search for this).