The power used by an electric tool can be determined by multiplying the

resistance times the current
current times the voltage
resistance times the voltage

Give an example in which the electrical energy changes to light energy

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

Acid rain is caused by human activity. select the best answer from the choices provided t f