Which law of motion describes equal and opposite forces of action and reaction?

Explain why electric current cannot exist if a current doesn't have a voltage source.

Avoltaic cell converts chemical energy to

Aspectroscope breaks light up into its colors, allowing scientists to analyze light from the solar system and universe. by studying the spectral line patterns, widths, strengths and positions, scientists can determine the speed, position, and of celestial bodies. a) age b) origin c) rotation d) temperature