If i wanted to determined what part of your brain that you needed not just used in order to respond to the sound of your voice which brain analysis technique should i use

An electric current in a wire will push or pull on a permanent magnet. which statement best explains how an electric current creates an electromagnetic force on another magnet?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.