A graduated cylinder full of a clear liquid and small pieces of white material with white fumes emerging from it. Which indicator of a chemical reaction is shown in the picture? the formation of a gas the formation of a precipitate a change in energy

How would you place two electrons on a sphere of radius r so that the electrostatic potential energy is minimized. how would you place three electrons to solve the same problem.

Which statement correctly describes the relationship between frequency and wavelength?

An electric current is flowing through the cord below.what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.