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 related to Earth science through the use of  radioactive decay in dating rocks. Physics is also related through  the Earth's magnetic field and how it affects tâ¦he planet.  +++   That's only two examples. Chemistry and physics permeate geology,  meteorology and oceanography at almost all levels.