A uniform bar 'AB' 100cm long weights 60N and upward force of 50N is applied at a point 20cm from A and downward force of 60N and 30N act, at A and B respectively. calculate the value and position of the equilibrant​

coil wire, increase current, put iron inside the coil

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary 

frequency or wavelenth of em radiation in a vacuum

your answer is, orbit around the nucleus