The total energy in a system is 675 j. the kinetic energy changes from 296 to 432 j. which statement best describes the potential energy of this system?

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e

Difference between series and parallel circuits

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?