How do scientists use the evidence they gather?

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

Explain what happens at the saturation point when adding salt to water at room temperature.

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these