Electric Field of a Dipole 1 Calculating and Displaying the Electric Field 1.1 Objectives In this activity you will write a VPython program calculates (exactly) and displays the electric field of a dipole at many observation locations, including locations not on the dipole axes. These instructions assume that you have already written a program to calculate and display the electric field of a single point charge. To calculate and display the field of a dipole you will need to:

Consider the following statements: struct nametype{string first; string last; }; struct coursetype{string name; int callnum; int credits; char grade; }; struct studenttype{nametype name; double gpa; coursetype course; }; studenttype student; studenttype classlist[100]; coursetype course; nametype name; mark the following statements as valid or invalid. if a statement is invalid, explain why. a.) student. course. callnum = "csc230"; b.) cin > > student. name; c.) classlist[0] = name; d.) classlist[1].gpa = 3.45; e.) name = classlist[15].name; f.) student. name = name; g.) cout < < classlist[10] < < endl; h.) for (int j = 0; j < 100; j++)classlist[j].name = name; i.) classlist. course. credits = 3; j.) course = studenttype. course;