D Question 1 7 pts You know that there is a net charge of 7.7e-12 C inside the box-shaped surface shown in the diagram. You are able to measure the electric field at locations on the bottom of the box and the sides of the box, and you record these values (shown in the diagram). You can't access the top surface (shaded) of the box to measure the electric field there, but you decide that you can use Gauss's law to figure it out You may assume this field is uniform all over the top surface. 4 cm 6 CM 17 cm 500 V/m 300 V/m What is the magnitude of the electric field on the top surface, in V/m? (Remember that magnitude is a positive number). D Question 2 3 p What is the direction of the electric field on the top surface? Upward, out of the box Zero magnitude, no direction To the right. parallel to the top surface Downward, into the box To the left, parallel to the top surface