Why can you use either a positive charge or a negative charge to move the positively An empty meter should appear; to start the measurement press the green 'play' button at the top of the screen. Typically, after charging, the needle might be at 80. SET thevaluesofq 1 to-7 Candq 2 to10 C. 3. We are all familiar with the fact that rubbing two materials together for example, a rubber comb on cat fur produces a static charge. The negatively charged This film conducts away the charges before they have a chance to build up. surface. The old electroscopes consisted of a box or cylinder with a front glass wall so the experimenter could look inside, and an insulating top through which a conducting rod with a ball or disk (called an electrode) on top entered the box. Write observations with drawings of Posted on May 28, 2021 by May 28, 2021 by Static electricity occurs whenever you have an accumulation of one type of charge. the run button on the upper tool bar. For example, if you charge a balloon by rubbing it on your hair, it can stick to a neutral Static electricity or Electrostatics David Case: March 6, 2015 Experiment #8 Static Electricity or Electrostatics Objective: To explore the concepts of static electricity and to discover how many types of electrical charges exist and how they interact with each other Materials: Below are 5 core components of a good conclusion for any scientific lab report: Restate the Experiment's Goals. For a negative charge, positive charge, the field is directed outward from the charge (figure 1a). The hanging ball should be repelled strongly. the positive charge would pull The arrows would be opposite to what the picture displays. Because lucite is an insulator, it remains charged until the charge leaks off slowly. Placeq 1 andq 2 4cmapart. Berea, Kentucky, United States. USW00094728 Distribution of charges in a polarized and non-polarized object. Write what you think is happening. Follow We are all familiar with the fact that cold, dry days are hot for electrostatics, and we get small shocks after walking across a rug and touching a door knob, or sliding across a car seat and touching the metal of the car door. Use Google Spreadsheet to document your data, graph, and The reason of why electrolytes or ionic compounds are supposed to conduct electricity is because of the charge of the molecule, ionic . i. Most electrons will go into the knob and down to the If you listen to a radio, then you are using Maxwell's research. It is referred to as a "proof plane". Using the values from the experiment, we found that the slope of the line is 1.51. charged puck? Preparation At your lab station, you should have three disc-shaped objects mounted on long, insulating handles. Start each observation with the section number and step number (e.g., I-2 for the step below). Exp 16 - Lab report about LeChataliers Principle, Experiment #13 - Molar volume of carbon oxide, https://phet.colorado.edu/sims/html/coulombs-law/latest/coulombs-law_en.html, https://phet.colorado.edu/sims/html/balloons-and-static-electricity/latest/balloons-and-static-, https://phet.colorado.edu/en/simulation/john-travoltage, https://phet.colorado.edu/sims/html/balloons-and-static-electricity/latest/balloons-and-, https://phet.colorado.edu/en/simulation/electric-, Introduction to Human Psychology (PSYC 1111), Business Environment Applications II: Process, Logistics, and Operations (D079), United States History, 1550 - 1877 (HIST 117), Leadership And Management For Nursing (NSG 403), Fundamentals of Biology: Cellular and Organ Physiology (BIO 203), Introduction to Health Psychology (PSYC1111), Professional Application in Service Learning I (LDR-461), Advanced Anatomy & Physiology for Health Professions (NUR 4904), Principles Of Environmental Science (ENV 100), Operating Systems 2 (proctored course) (CS 3307), Comparative Programming Languages (CS 4402), Business Core Capstone: An Integrated Application (D083), Chapter 2 notes - Summary The Real World: an Introduction to Sociology, Exam View - Chapter 09 - Seidals Guide To Physical Examination 9Th Edition, Ch. You do not need to measure the position of its center, but will record the position of its inside edge. Two particles of the same charge exert a repulsive force on each other, and two particles of opposite charge exert an attractive force on each other. Practice taking measurements and compare your readings with those of your lab partner until you are sure you can do them accurately. Discussion, Results and Conclusion Conclusion This lab aimed to show the effects of electrostatic forces between different charged objects. If the sticky side of both the tape. User. When the charged object is pulled away, the needle of the electroscope deflects, thus indicating an overall charge on the electroscope. You may use the stopwatch function of your wristwatch. The conductor has been charged without actually being touched with the charged rod, and its charge is opposite that of the rod. Coulomb's Law describes three properties of the electrical force: The force is inversely proportional to the square of the distance between the charges, and is directed along the straight line that connects their centers. Course. Usually, it is possible to calculate the currents and voltages in a circuit by solving a set of equations, the calculations are required to design a safe circuit.and this is one reason why advanced mathematics is so important in the field of electrical engineering. Slide 1 of 4. attachment_1. The negatively charged balloon repels the negatively charged electrons, thus forcing them to move downwards. An earlier FBI conclusion agreed with the lab origin theory with "moderate confidence," but other U.S. government agencies - as well as DoE itself - previously concluded there isn't enough information . The USB was universal, providing 5 volts in any country you were in, and a small red LED next to her phone's screen told her the phone was successfully charging. Lab 1 - Electrostatics Lab's goal To investigate the electrostatic interaction between various objects. A lab report is an account of an experiment and what was discovered during the experiment. and conclusions sections - and possibly what could have been done (if anything . has been fossilized). Place the rod into the stirrup holder as shown in Figure 7. A. USW00094728 For this experiment, do not shine the flood lamp on the electroscope. USW00094728 Torque and j-s29029-17 non-precedential decision - the each contributing 50% to draw final lab partners:. Please write answers direct on the PDF file. The Hit RESET to do this several times. determine the equation for the relationship. Include in the discussion the vocabulary: charge transfer and electric attraction. Our tutors are highly qualified and vetted. What do you predict for the answer? Therefore the balloon Talk about the similarities and Rub the lucite rod vigorously with the silk cloth. Charges and FieldsThis part uses the simulation from PhET Interactive Simulations, Learning Goals: Students will be able to describe and draw models for common static electricity concepts. Turn down the variac and shut the power off. Touch his finger to the door knob to show go twice as fast towards the negative charge puck. For example, if a negatively charged rod is brought close to an isolated, neutral insulator, the electrons in the atoms of the insulator will be pushed slightly away from the negative rod, and the positive nuclei will be attracted slightly toward the negative rod. Static Electricity Lab Report new Lab Report University University of North Carolina at Greensboro Course Genrl Physics Ii With Calc Lab (PHY 292L) Academic year2018/2019 Helpful? Login projectile motion refers to design and light. A rod of plastic rubbed with fur or a rod of glass rubbed with silk will attract small pieces of paper and is said to be electrically charged. ), The displacement \(d\) of the hanging ball from its equilibrium position depends on the electrical force \(F\) which repels it from the sliding ball. Include and Analyze Final Data. Studypool matches you to the best tutor to help you with your question. You can record and graph data in Excel or by hand (although if you work by hand, you will lose the opportunity for 2 mills of additional credit below). The hanging ball will be attracted by polarization, as in Section III of this lab. illustrates the direction of the field in a positive and negative char. What happens? What happens? Use several sentences and perhaps a diagram or two to explain the behavior of the charges in the electroscope. In a metal, a charge can move freely and stay on the surface. If two objects are charged in the same way, they show repulsion. Create a portfolio of projectile motion sensor and experiments. Open phet.colorado/sims/html/balloons-and-static-electricity/latest/balloons-and- Therefore the balloon material ends up with an excess of electrons and becomes negatively charged, while the other (sweater) ends up with a deficiency of electrons and becomes positively charged. Move the sliding ball in steps of 0.5 cm for each new measurement. USW000 popular science journals, physics homework help. A common instrument for this purpose is the electroscope, a device with two thin gold leaves vertically suspended from a common point. You can ameliorate this effect somewhat by shining a heat lamp on the insulators in the apparatus. Their electrons are bound tightly and cannot move. The excess amount of negative charge in his body will go through the doorknob as he touches it. Explain how these principals connect to electricity, magnetism, or light in modern applications in physics. To conduct this experiment, I first filled him up with a lot of negative charges. We conducted a comprehensive experiment that proved a valid existence of the relationship between equipotential lines and the electric field lines. They were attracted to the positive charges of the sweater instead of each other. the positive charge would pull and the negative charge would push. made him touch the doorknob and all of the negative charges followed through the door. If the wire or path is subsequently disconnected, the conductor as a whole is left with a net positive charge. Hold one end of the neon tube with your fingers, and bring the metal plate slowly closer to the other end. A simple circuit requires a power source that supplies a certain amount of voltage as well as wires to connect the . Lab 1: Electrostatics Introduction: This experiment is intended to give you some experience with, and experimental verification of, some of the basic principles of electrostatics you have been introduced to in lecture. InstructionsIn a two-page paper, identify the physics principles contained within the following scenario. Observe what happens with the electroscope needle. The difference between these two measurements, plus the diameter of one of the balls, is the distance \(r\) between their centers. Does anything need to be held constant? Put the sliding ball in, and make trial measurements of the inside edge of the sliding ball and the inside edge of the hanging ball. For this experiment, I got the negative charges from the sweater for both balloons. If they are charged differently, they show attraction. With the positive charge you can push the positive puck, and on the other hand, you can use the negative charge to pull the positive puck. Charge sticks on an insulator, but does not move freely through it. The metal plate is negatively charged by induction. When the balloon has been rubbed enough times to gain a sufficient negative charge, it, Wool is a conductive material, which means it readily gives away its electrons. The study of the Coulomb forces among arrangements of stationary charged particles is called electrostatics. c. Determine the relationship between amount of charge and the strength of the electric field Cut 4 pieces of tape each about 10-cm-longh. For an additional credit of 2 mills, use Excel to fit a power-law curve to the data. Although the wall should normally have a neutral charge, the charges within it can rearrange so that a positively charged area attracts the negatively charged balloon. (The purpose of the closed box is to minimize the effects of air currents. electroscope. The puck will move horizontally right if both the magnitude and the distance were the same between the two charges. Oct 2011 - Present11 years 5 months. Look in through the side plastic window. USW00094728 Theory number of positive and negative charges (thus an equal number of protons and electrons). Building Institutions for Results Delivery BIRD Earlier today, Murtala Adogi Mohammed of System Strategy and Policy Lab with Leo The Great Ebenezer, Head (You may feel a slight shock.). Rub Johns foot on the floor to demonstrate charge transfer. This USB port seemed to have very high amperage, meaning it charged her phone quickly. This can happen (V/m) Explain how thes InstructionsIn a two-page paper, identify the physics principles contained within the following scenario. I tried to put the two balloons together, but they kept moving away from each other. If the electroscope needle falls to 0 in a few minutes, the heat lamp will help in the experiments below. on the wall it will stay up and attached to it. The material Say Discuss with your partner what is happening when he touches the knob. Repeat the demo several times. Charge one lucite rod by rubbing it vigorously with silk. induction, and conduction INTRODUCTION: In this activity we will use very simple objects to investigate electric charge. Describe an experiment and include images from the simulation that supports your answer. neutral region) and the support/needle acquires an excess of negative charge (since electrons However, it is known that the making and breaking of contact between the two materials transfers the charge. : an American History (Eric Foner), Business Law: Text and Cases (Kenneth W. Clarkson; Roger LeRoy Miller; Frank B. vvjut. This lab was divided into two major parts namely part 1 were you will verify Ohm's law by developing a variation of voltage (V) against current (I . 3) Stick the "T" and the "B" tape to a surface, so that about 9 cm of the tapes are hanging freely in the air. Once you rub the balloon to the sweater, it gathers electrons so that once you place the balloon You will learn to detect the presence of electric charges and, at least semi-quantitatively, measure them. Hit RESET to do this several times. AST 109 Western Nevada College The Rotation of The Sun Lab Report. Write down "attract" or "repel" according to your observations. Cross), Forecasting, Time Series, and Regression (Richard T. O'Connell; Anne B. Koehler), Biological Science (Freeman Scott; Quillin Kim; Allison Lizabeth), Chemistry: The Central Science (Theodore E. Brown; H. Eugene H LeMay; Bruce E. Bursten; Catherine Murphy; Patrick Woodward). device used for producing high voltages and creating static electricity. A conductor will carry an electrical current. differences in the two models represented by the sims. Rub the rough plastic rod with cat's fur, and bring this rod near the lucite rod in the stirrup. It was found that the slope of the linear fit depicts that the electric field runs perpendicular to the potential lines, whose . transfer, induction and electric attraction. the field is directed inward towards the charge (figure 1b). 438v+3. 990 Words. The influence of insulators and conductors was also observed during the experiment as well as ways to charge static electric charges. same between the two charges. PHY 2 Lynn University Electrostatics Lab Report . Objects of the same electric charge repel, and objects of opposite charges attract. Plot (by hand or with Excel) \(d\) versus \(1/r^2\). For a If the cover sheet already has a title then use it as is. Observe what happens with the electroscope needle. When we charge a material by friction, we are transferring some of the electrons from one material to another. We say that the rod has induced polarization in the insulator, but its net charge is still zero. Is there any difference in the behavior of the needle compared to the results in procedure 6? The current should be read on the 300 mA (or lower) scale. As shown in the demo below, the sweater is positive and the balloon attaches to the sweater due to the rubbing and the balloon essentially attracts to the electrons. attachment_1. game. Recharge the metal plate, and actually touch it to the top of the electroscope. 2. Because the positive charge is not used up, the metal plate can be charged repeatedly by induction. Static Rub the second lucite rod with silk, and bring it close to the first rod. (Refer to the theory section, if necessary.). Describe the materials and fabrics that you found: Determine the interaction between the various scotch tapes, and various objects. 10 Lab 1: Electrostatics Vanderbilt University, Dept. with sharing and discussing. Electrons are being transferred from the balloon to the sweater. Science. This can happen when two non-conducting materials are rubbed together for example plastic and fur. When the balloons are rubbed by fur, they become charged negatively. The charged particles which make up the universe come in three kinds: positive, negative, and neutral. (Theoretically, it should be 2.000, but what does your curve fit produce?). electrochemistry-lab-report-conclusion 2/5 Downloaded from uniport.edu.ng on March 3, 2023 by guest reaching down even to the molecular level. The study of the Coulomb forces among arrangements of stationary charged particles is called electrostatics. Electric charge comes in two forms: positive and negative. The arrows on the puck are illustrating how both the positive and To investigate the electrostatic interaction between various objects. You must use appropriate significant figures and scientific notation in your answers. Later, other materials were found which exhibited this same behavior. We can observe attraction and repulsion between electrically-charged objects. material losing electrons now has fewer electrons than normal and becomes positive. The purpose of the mirror is to minimize parallax errors in reading the scale. Then, describe some of your experiments and 286 Comments Please sign inor registerto post comments. c. What do you think would happen if you use 2 charges instead of one to make the puck the two balloons together, but they kept moving away from each other. The material gaining electrons now has more electrons and becomes negative. A static charge is produced because some electrons are transferred from one object to the other. is placed inside a strong electric field, the material may become polarized. illustrates the direction of the field in a positive and negative charge. Observe what happens with the neon tube. Where does the energy that makes the sparks and lights the tube come from? Electrostatic Lab Investigation #1: Materials: - fur - plastic rod -wool - balloon - electroscope Procedure: 1. Would you like to help your fellow students? What do you predict for the answer? The Figure 2 On the Van de Graaff, a hollow metal sphere is supported by a cylindrical insulating support stand. move? 562v=0v2) Verify KCL in figure 3 circuit from hardware measurement. You can do this with the What happens? Electrostatics experiment Apparatus Faraday used in the experiment: a metal pail (A)is supported on a wooden stool (B)to insulate it from the ground. Begin rubbing it with the fur. For a positive charge, the field is directed outward from the charge (figure 1a). investigation support or change your ideas. Insert your data table and graph from your As shown in the demo below, the sweater is positive and the balloon attaches to the Repeat the procedure until you have experienced several sparks. The plate actually makes contact with the lucite in only a few places; and because lucite is an insulator, charge does not transfer easily from it. Conclusions Summarize what you learned in the lab, with specific references to the scientific concept under study which you detailed in the introduction. when using the two different charges opposite to each other the puck would go twice as fast towards the negative charge puck. For example, to measure to position of the front of the hanging ball, line up the front edge of the ball with its image. Metallic conductors allow the free flow of ions and electrons through a sample; and its conductivity decreases as the temperature increases.. Lift off the top cover and look down on the ball. One of these is silver. How does the arrow from the positive charge compare and Most materials are electrically neutral they have an equal number of positive and negative charges (thus an equal number of protons and electrons). The image shows that the negative charges do repel each other and the positive charges remained. PURPOSE OF THIS ASSIGNMENT: To improve your scientific literacy and critical thinking 4. Materials such as metals are conductors. measurements. static-electricity_en, separated (positive on one side, negative on the other). (Refer to the theory section, if necessary.). Record your observations. Abstract: This lab focuses on Newton's second law and Coulomb's law. 1. However, if a neutral object in topics pertaining to physics and Hypnotization has been at the center of innumerable discussion and discourse among experts and quacks alike. The material losing electrons now has fewer electrons than normal and becomes positive. is Capacitors And Electrostatics Lab Report Conclusion below. You must use appropriate significant figures and scientific notation in your answers. They are classified as Nan-electrolyte compounds. Electrostatics Lab Conclusion: Explain how the balloons are in equilibrium and how this allows us to calculate the electrostatic force. Now if we connect a conducting wire or any other conducting material from the polarized conductor to the ground, we provide a path through which the electrons can move. Experiment 1 - Driven Harmonic Oscillator, Experiment 6 - The Charge-to-Mass Ratio of the Electron. of Physics & Astronomy Modified from: RealTime Physics P. Laws, D. Sokoloff, R. Thornton General Physics Part B and University of VA Physics Labs: S. Thornton Triboelectricity First, you must move some electrons around to produce a net electric charge. Electrons will actually move along this path to the ground. The lab uses an internet application to demonstrate how equal and opposite charges on pith balls create a repulsion force that . force. law. Conclusion from Ohm's Law lab Report We learned that current and voltage hold a direct relationship for resistive components. Stuck on a homework question? The flow of direct current in a circuit is only possible when the circuit is closed, however, if the circuit is open, the flow of current stops. If the humidity is fairly low on the day of your lab, the experiments will proceed easily. The title should indicate what the lab report is about. If so, how do you account for the difference? negative charges affect the puck when displayed in the hockey game. To experimentally investigate electrostatics, some chargedetecting or measuring device is needed. Question 3: What do you think the balloons will do? For reference purposes, according to the convention originally chosen by Benjamin Franklin, the lucite rods rubbed with silk become positively charged, and the rough plastic rods rubbed with cat's fur become negatively charged. This experiment consists of many short demonstrations in electrostatics. Sweater will become electron deficient thus, making it have more positive charges. 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