Vector A and B are in the xy plane where A is 3.2m at 45° to the positive x axis and B is 2.4m at 290° to positive x axis. Determine A•B​

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

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?

Is the portion of the electromagnetic spectrum that has a frequency just above that of visible light.