Which part of a circuit creates an electric force field that makes it possible for the circuit to work?
-bulb
-buzzer
-motor
-voltage source

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

Two waves maximally constructively interfere at a point in space. among the options below, select the possible value of their phase difference at that point in space.a. zerob. πc. π/2d. not determinable by the information provided

Only 3% of the water on earth is usable by humans. even though that 3% is through the water cycle, we still need to be careful not to waste water.