A carpenter uses a crowbar to remove the top of a box the resistance is 500 n he applies a force of 250 N what is the mechanical advantage of the crowbar?

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

Asystematic approach to problem solving is called a (an)

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell