General Physics 2 Q3 Lesson 1.1 PDF

GENERA L PHYSIC Engr. Kazelle Anne A. Sallegue S2  Welcome! Are you excited for a new learning session? MAKE SURE YOU HAVE THE FOLLOWING BEFORE Pen WE START: Paper Calculator, preferably a scientific calculator Good listening ears Class Rules Please show...

GENERA L PHYSIC Engr. Kazelle Anne A. Sallegue S2  Welcome! Are you excited for a new learning session? MAKE SURE YOU HAVE THE FOLLOWING BEFORE Pen WE START: Paper Calculator, preferably a scientific calculator Good listening ears Class Rules Please show up on time at the scheduled time. You may raise your hand if you want to recite or have CLASS questions. Maintain respect in both RULES speaking and writing.  Explain the role of electron transfer in electrostatic charging by rubbing; Solve problems involving OBJECTIV electric charges, dipoles, ES forces, fields, and flux. Electric Charge and Static Electricity Question 1: Differentiate electrons, Recall! protons, and neutrons. Question 2: How can you tell if an atom is electrically Recall! neutral and electrically charged? ELECTRONS, PROTONS, AND NEUTRONS Electrons, protons, and neutrons are all particles of an atom. Electrons are negatively charged, protons are positively charged, and neutrons are neutrally charged particles. ELECTRONS, PROTONS, AND NEUTRONS If an atom contains equal numbers of protons and electrons, the atom is described as being electrically neutral. If an atom has an unequal number of protons and electrons, then the atom is electrically charged. ELECTRIC CHARGE The charge of an object is a measurable quantity. The charge possessed by an object is often expressed using the scientific unit known as the Coulomb (abbreviated C). ELECTRIC CHARGE The charge on a single electron is -1.6 x 10 Coulomb. -19 The charge on a single proton is +1.6 x 10 Coulomb. -19 Conversion factor: 1 electron = -1.6 x 10 Coulomb -19 ELECTRIC CHARGE Conversion factor: 1 electron = -1.6 x 10 Coulomb -19 ELECTRIC CHARGE To illustrate the magnitude of 1 Coulomb, an object would need - an excess of 6.25 x 10 electrons 18 to have a total charge of -1 C. - An object with a shortage of 6.25 x 10 electrons would have a 18 total charge of +1 C. ELECTRIC CHARGE The quantity of charge on an object reflects the amount of imbalance between electrons and protons on that object.  Complete the following statement: After some rather Sample exhausting counting, a physics teacher Proble determines that a very m small sample of an object contains and ; the charge on this object  Complete the following statement: After some rather exhausting counting, a physics teacher determines that a very small sample of an object contains and ; the charge on this object is ____ Coulombs. SOLUTION AND ANSWER: Method: Subtract the smaller number from the larger number. (This would be based upon the exponent.) Then multiply the difference by the charge of a proton or electron.  Complete the following statement: After some rather exhausting counting, a physics teacher determines that a very small sample of an object contains and ; the charge on this object is ____ Coulombs. SOLUTION AND ANSWER: ; then we multiply it by since it has an excess of protons:  Activity No. 1.... and ; the charge on this object is ____ Coulombs. 1 Complete the following statements: After some rather exhausting Solution and Answer: counting, a physics teacher determines that a very small sample of an object contains... 2.... and ; the charge on this object is ____ Coulombs. Solution and Answer: Static Electricity Let us watch the following video for demonstrations regarding static electricity. https://www.youtube.c om/watch?v=ViZNgU-Y t-Y Static Electricity Opposites attract. And likes repel. Oppositely charged objects will exert an attractive influence upon each other. In contrast to the attractive force between two objects with opposite charges, two objects that are of like charge will repel each other. Static Electricity Static Electricity Conductors are materials that permit electrons to flow freely from particle to particle. An object made of a conducting material will permit charge to be transferred across the entire surface of the object. Insulators are materials that impede the free flow of electrons from atom to atom and molecule to molecule. If charge is transferred to an insulator at a given location, the excess charge will remain at the initial location of charging. Conductors vs. Insulators Conductors vs. Insulators Conductors vs. Insulators  Summary of Class LESSON LESSON LESSON RECAP 1 RECAP 2 RECAP 3 Electrons vs. Protons vs. Opposites Conductors Neutrons attract. vs. Likes repel. Insulators 1 electron = -1.6 x 10-19 Coulomb  Thank you for attending! That’s all for today. Kindly communicate with me on our gc from 8:00 – 5:00 Mon – Fri if ever you have clarifications/questions. God bless and keep safe! - Ma’am Kay