what is the relationship between the number of coils in a solenoid and the emf induced in it by a change in the magnetic flux through the solenoid?

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply

The mantle is made up of which structural zones?

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=