Sphere A is placed 12 cm away from another charged sphere, B, along a straight line in a vacuum, as shown below. Sphere B carries a charge
of +0,8 pc. Point P is located 9 cm to the right of sphere A.
12 cm
+ 0,8 με
P
-0,75 C
A:
B
9 cm
(5)
7.2.2
Calculate the magnitude of the net electric field at point P.​

The next element is345640

You need to be more specific.  i really don't know what a "motion map" is.you can draw a graph of an object's position, distance, displacement, speed,velocity, or acceleration versus time, or you can draw a graph of the object's x-position versus its y-position and not give any information about time at all.if the graph presents position or displacement against time,  then constant velocity is a straight line . . i.e. a line that has  constant slope.if the graph shows speed against time, then constant velocityis a horizontal piece of line.if the graph shows acceleration against time, then constant  velocity is a piece of line that lies on the x-axis . . it's value is zero. 

Answermake them get very hot and over time wear them out;

D. a  bar magnet with its south pole on the left