Help! I have this assignment for physics. 1. You place a book on a table. Someone asks you to draw the forces acting on the book. What force diagram do you show them?

2. A car has come to a complete stop at a red light. Draw the force diagram for this car at rest.

3. A car is parked uphill on a sloped street. How would you draw the force diagram to
illustrate all of the forces acting on this car to keep it parked on the slope? (Hint: Don’t
forget to think about frictional forces!)

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=