20. The friction force that resists the motion between two surfaces that are
not moving is called: *
A. static friction
B. sliding friction
C. rolling friction
D. air friction

What is the scientific definition of energy that relates to work

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=

Which of the following statements accurately describes the sign of the work done on the box by the force of the push? a. positive b. negative c. zero