Understanding Physics: The Science of Matter and Energy 🌍

PHYSICIS: <br /> PHYSICS IS A GREEK WORD (PHYSIKOS)WHICH MEANS NATURE <br />DEFINITION: <br /> THE BRANCH OF SCIENCE IN WHICH WE STUDY ABOUT MATTER, ENERGY AND THEIR MUTUAL RELATIONSHIP <br /> OR <br />MEASUREMENT: <br />THE COMPARISON OF UNKNOWN QUANTITY WITH KNOWN (STANDARD) IS CALLED MEASUREMENT <br />QUANTITY: <br /> THE AMOUNT OF ANYTHING IS CALLED QUANTITY . WE HAVE TWO TYPES OF QUANTITIES <br />(1): PHYSICAL QUANTITIES <br />(2): NON PHYSICAL QUANTITIES <br />(1): PHYSICAL QUANTITIES : <br /> ALL THOSE QUANTITIES WHICH CAN BE MEASURE IS CALLED PHYSICAL QUANTITIES <br />EXAMPLES: LENGTH, MASS, VOLUME, E.T.C <br />(2): NON PHYSICAL QUANTITIES : <br /> ALL THOSE QUANTITIES WHICH CAN NOT BE MEASURE IS CALLED NON PHYSICAL QUANTITIES <br />EXAMPLES: FEELING, LAUGHING,E.T.C <br />KEY POINT: SHADOW IS WHICH THPE OF QUANTITY?? <br />ANSWER: WITH RESPECT TO SIZE IT IS PHYSICAL QUANTITY .AND WITH RESPECT TO MASS IT IS NON PHYSICAL QUANTITIES <br />TYPES OF PHYSICAL QUANTITIES <br />THERE ARE TWO TYPE OF PHYSICAL QUANTITIES <br />(1): BASIC PHYSICAL QUANTITIES <br />(2): DERIVED PHYSICAL QUANTITIES <br />(1): BASIC PHYSICAL QUANTITIES: <br /> ALL THOSE PHYSICAL QUANTITIES WHICH CAN NOT BE EXPRESS IN THE TERM OF OTHER PHYSICAL QUANTITIES AND ALSO CALLED FUNDAMENTAL QUANTITIES