Kisha applied 20n of force to turn an ice cream freezer crank. the crank's resistance was 60n. what was the mechanical advantage of the crank?

Modify the equation fδt=δ (mv) to find the force of friction.

How much energy is supplied to each coulomb of charge that flows through a 12-v battery?

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=