Where else have you observed colorful light emissions? are these light emission applications related?

According to the diagram; a) identify the anode of the cell and write the half-reaction that occurs there b) write the overall equation for the reaction that occurs as the cell operates c) calculate the value of the standard cell potential ,e cell. d)write the shorthand notation of the cell above e)indicate the flow of the electrons on the diagram

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.