Make a picture of six equally charged small objects arranged in a straight line. The charged objects are the same distance from each other. Select a point outside those charged objects and along the axis through them. Label all the quantities necessary to calculate the electric field at the point you selected. Decide on an appropriate coordinate system. Draw the electric field vector caused by one of the small objects at the point you selected. Write an expression for its magnitude and direction. Write an expression for the electric field at your point in space caused by adding up the electric field caused by all of the charged objects. Write down the expression for the charge density of the entire line of charged objects in terms of quantities you know. Write down the expression for the charge density for two neighboring the charged objects. How does the charge density of the entire line of charged objects compare to the charge density of a small part of that line