1.14 Which of the following is an example of a force without touching? A A boy pushing a trolley. B The mass of a car. C с A magnet attracting a nail. D A jug of wale;​

If forces acting on an object are unbalanced. true or false

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=

Why is a noble gas different from other elements