When the computer receives a rich signal (high voltage) from the O2 sensor, it leans the fuel mixture to reduce the sensor's reading. When the O2 sensor reading goes lean (low voltage), the computer reverses again making the fuel mixture go rich.
Chemistry and physics are branches of science that both study matter. The difference between the two lies in their scope and approach. Chemists and physicists are trained differently, and they have different professional roles, even when working in a team.
Chemistry is the branch of science that deals with the properties, composition and the structure of matter. It also deals with chemical reactions, changes in matter, and the pâ¦rinciples which govern these changes. Lighting a fire, making ice cream, and riding in a hot air balloon all deal with chemistry.