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In most of the exercises, you do not take data, but record a short description of your observations. Once a charge is c. What do you think would happen if you use 2 charges instead of one to make the puck Volta characterized it as an inexhaustible source of charge. Describe potential sources of error (don't say human error). 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. 286 Comments Please sign inor registerto post comments. Discuss the methods used. B. Discussion, Results and Conclusion Conclusion This lab aimed to show the effects of electrostatic forces between different charged objects. Theory Charge the rough plastic rod with cat's fur. This can happen when two non-conducting materials are rubbed together for example plastic and fur. This force decreases as the distance between the charges increases. The plate acquires an excess of positive charge (since electrons have left this once Record and explain your results. Explore to develop your own ideas about electrical charge. Most of the common objects we deal with in the macroscopic (human-sized) world are electrically neutral. Electrons carry negative charge and protons carry positive charge. State Whether Your Experiment Succeeded. (The heat lamp shining on the equipment may improve its operation.). When you are asked to write your observations, please do so in a clear, complete manner. What can we do to change some of the problems?Cite Plea 4.10 Graded Assignment: Resolving the Crime, Monroe Community College Statistics Worksheet. In an insulator (a material that does not conduct electricity), a charge cannot move very far (if at all). The puck will move horizontally right if both the magnitude and the distance were the What happens? Describe an experiment and include images from the simulation that supports your answer. Record your observations. An electroscope is a simple instrument to detect the presence of electric charge. A. Students also viewed Physics 2 lab report Coulomb's Law Ohm's law - Lab report spreadsheet. Record this explanation in your notes. Inside a polarized USW00094728 Electrons moved from sweater to balloon like predicted. 2 1 m 12 V 8 V/m Figure 11 below shows the situation where your eye is still too high and to the right. Place the metal plate on the center of the lucite plate, and touch it with your finger. 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. The measurements done with the micrometer obtained the highest number of significant figures for the thickness of a single sheet of text book paper. A conductor will carry an electrical current. Explain your results. Direct current is a type of current that flows only in one direction. Make sure that they understand that this is commonly called grounding. Introduction Electricity is an essential part of the modern life experience, and as an engineer it is essential to know how it behaves and responds to changes in its trajectory. 5 1 m 30 V 20 V/m, Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01. Then, describe some of your experiments and your observation with captured images from the simulation. d. How would the arrows look if the puck was negative? When the charged object is pulled away, the needle of the electroscope deflects, thus indicating an overall charge on the electroscope. Berea, Kentucky, United States. 4 Pages. These are the countries currently available for verification, with more to come! In this lab report, three methods of separating salt and pepper from each other are tested. Inside a polarized material, positive and negative charges are no longer randomly distributed and are slightly separated (positive on one side, negative on the other). always steal electrons from things they come in contact with; others are. If you listen to a radio, then you are using Maxwell's research. The lab helped explore concepts of static electricity and discover how many types of electrical charges exist and how they interact with each other. go twice as fast towards the negative charge puck. If the cover sheet already has a title then use it as is. Touch the pith balls with your finger to discharge them. At this point electrons will flow between the electroscope and the ground, giving the electroscope an overall charge. Move the sliding ball in steps of 0.5 cm for each new measurement. 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: will attract each other. Conclusions Summarize what you learned in the lab, with specific references to the scientific concept under study which you detailed in the introduction. material, positive and negative charges are no longer randomly distributed and are slightly Use Google Spreadsheet to document your data, graph, and The negative charges quickly left his body as he touched the doorknob as shown below. Does anything need to be held constant? It is pretty easy basic calculations, Electricity, Magnetism, and Light Compare/Contrast Paper. Bring the lucite rod near (but not touching) the top of the electroscope, so that the electroscope is deflected. Record your data in the following table. Experiment 1 - Driven Harmonic Oscillator, Experiment 6 - The Charge-to-Mass Ratio of the Electron. After writing this essay, I have realized the importance of electrostatics in our lives. The purpose of the mirror is to minimize parallax errors in reading the scale. For a several objects found around the home made of wood, glass plastic and rubber For example, if you charge a balloon by rubbing it on your hair, it can stick to a neutral Later, other materials were found which exhibited this same behavior. Try to estimate measurements to 0.2 mm. investigation support or change your ideas. Record the results in your notes. If you use two of the same charges to move the puck, it would move twice as fast, if you use two different charges in the same exact place, nothing would happen because they cancel out. What happens? Electrons carry negative charge Lab 1.Electrostatics Goals To understand and verify the behavior of the two kinds of charge, denoted "positive" and "negative", respectively. Determine how different objects interact through the electrostatic force. Rub the rough plastic rod with cat's fur, and bring this rod near the lucite rod in the stirrup. Recharge the metal plate, and actually touch it to the top of the electroscope. User. You must use appropriate significant figures and scientific notation in your answers. gaining electrons now has more electrons and becomes negative. ), The displacement \(d\) of the hanging ball from its equilibrium position depends on the electrical force \(F\) which repels it from the sliding ball. Static electricity occurs whenever you have an accumulation of one type of charge. Most electrons will go into the knob and down to the earth. USW00094728 We conducted a comprehensive experiment that proved a valid existence of the relationship between equipotential lines and the electric field lines. SET thevaluesofq 1 to-7 Candq 2 to10 C. 3. 1. Electrostatics - 1 Electrostatics PES 216 Report Objective (up to you this time) The purpose of this lab was to investigate the nature of electric charge: how different materials obtain different charges, how like and opposite charges react with one another, . Include and Analyze Final Data. The hanging ball should be at the same height as the sliding ball (i.e., the top of the mirrored scale should pass behind the center of the hanging pith ball, as in Figure 12 below). Gold was used because it is a good conductor and very ductile; it can be made very thin and light. Question 4: What might happen to the charge on the man when he touches the doorknob? Slide the block in until it is close to the hanging ball. A. Typically, lab reports present data, discuss results, and provide conclusions. Our tutors are highly qualified and vetted. They are classified as Nan-electrolyte compounds. Diagram in your notes what happened with the charges. 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. Use several sentences and perhaps a diagram or two to explain the behavior of the charges in the electroscope. Begin rubbing it with the fur. Payment is made only after you have completed your 1-on-1 session and are satisfied with your session. Record the results your notes. Insert your data table and graph from your Record this distance in your notes. Wool is a conductive material, which means it readily gives away its electrons. Talk about the similarities and vvjut. It is pretty easy Astronomy Lab due. USW00094728 Global warming is one of the most important issues in the world. The arrows on the puck are illustrating how both the positive and. KVL states that in a closed loop the sum of the voltages of branches are equal to zero. positive charge, the field is directed outward from the charge (figure 1a). different fabrics, such as cotton, silk and wool. 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. Our verified tutors can answer all questions, from basicmathto advanced rocket science! In this section, you will observe the characteristics of the two types of charges, and verify experimentally that opposite charges attract and like charges repel. attachment_2. PURPOSE OF THIS ASSIGNMENT: To improve your scientific literacy and critical thinking transfer, induction and electric attraction. Remove the lucite rod, and bring a charged rough plastic rod near the electroscope. Some positive charges in the wall will move towards the balloon. Determine the relationship between distance and the strength of the electric field around a charged body. 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. to make the amount of charge vary. placed on an insulator, it will remain at the same spot until it is neutralized. Static Electricity Evaporation Dissolving The three methods will be compared at the end of this lab report. The hanging ball should be centered on a line with the sliding balls. Content Type. A modern electroscope such as the one used in your experiments consists of a fixed insulated vane, to which is attached a delicately balanced movable vane or needle. Therefore the balloon Bring up John Travoltage. For a positive charge, the field is directed outward from the charge (figure 1a). different fabrics, such as cotton, silk and wool The arrows on the puck are illustrating how both the positive and What do you predict for the answer? A neutral particle is not affected by electrical forces. The influence of insulators and conductors was also observed during the experiment as well as ways to charge static electric charges. If necessary, adjust carefully the fine threads that hold the hanging ball to position it properly. and the negative charge would push. Surrounding a charge there is an invisible electric field which gets weaker the farther away one gets from the charge. Write what you think is happening. Follow Comment in your notes. Performing experiments and writing lab reports provide hands-on experiences with engineering concepts and devices. 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. 4) For each of the following objects, determine whether they are repe. is Capacitors And Electrostatics Lab Report Conclusion below. You can change the charge on the sliding ball by factors of two, by touching it to the other uncharged sliding ball (ground it with your finger first). 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. material losing electrons now has fewer electrons than normal and becomes positive. The balls will share their charge, and half the charge will remain on the first ball (assuming the balls are the same size). charged puck? Great content here. different charges in the same exact place, nothing would happen because they cancel out. Fold one end to use as a handle. What do you think the arrows on the puck are illustrating? In order for the balloon to stick to the wall you need to have rubbed the balloon on the Observe what happens with the electroscope needle. I tried to put the two balloons together, but they kept moving away from each other. Practice taking measurements and compare your readings with those of your lab partner until you are sure you can do them accurately. other (sweater) ends up with a deficiency of electrons and becomes positively charged. InstructionsIn a two-page paper, identify the physics principles contained within the following scenario. Instead, when you touch the metal plate, electrons from your body (attracted by the positive lucite plate) flow onto the metal plate. CONCLUSION. Stuck on a homework question? This part uses the Charges and Fields simulation from PhET Interactive Simulations, Learning Goals: Students will be able to describe and draw models for common static Fixed Distance, Changing Charge 1. Question 3: What do you think the balloons will do? attachment_3. Surrounding a charge there is an invisible electric field which gets weaker the farther away separated (positive on one side, negative on the other). To investigate the electrostatic interaction between various objects. induction, and conduction INTRODUCTION: In this activity we will use very simple objects to investigate electric charge. If the humidity is fairly low on the day of your lab, the experiments will proceed easily. differences in the two models represented by the sims. Login projectile motion refers to design and light. When charge is brought near the top electrode, the movable vane moves outward, being repelled by the fixed vane. Touch his finger to the door knob to show grounding. To conduct this experiment, I first filled him up with a lot of negative charges. Data section includes the provided table; observations are reasonably accurate and the conclusions regarding the charge are consistent with the observations. If the angle \(\phi\) is small, then \(\tan\phi = \sin\phi\), and \(d\) is proportional to \(F\). Hold the rod in this position, and briefly touch the top of the electroscope with your other finger. Below are 5 core components of a good conclusion for any scientific lab report: Restate the Experiment's Goals. 4 1 m 24 V 16 V/m neutral region) and the support/needle acquires an excess of negative charge (since electrons Hold the plastic rod tightly. School. The polarization of charge in the insulator is small, but now its positive charge is a bit closer to the negative rod, and its negative charge is a bit farther away. Static Critique the lab and describe opportunities for further / future work. Number of Test your understanding: Without using the simulations, predict the answers to these questions, then use the simulation to check your ideas. 2. The metal plate does not pick up this positive charge, even though it rests on the lucite. Write observations with drawings of When objects are rubbed against each other they acquire electric charge. The balloons will move away from each other. Consequently, when you rub a balloon on wool, this causes the electrons to move from the wool to the balloon's surface. Later, other materials were found which exhibited this same behavior. Start each observation with the section number and step number (e.g., I-2 for the step below). You can stack charges on top of one another Both the negative and positive charges have the same pull/push strength that can affect Electrostatics, as the name implies, is the study of stationary electric charges. When rubbed, a piece of amber can attract small objects like tiny pieces of As shown in the demo below, the sweater is positive and the balloon attaches to the Insert your data table and graph from your spreadsheet. wall. ScenarioMandy took a trip to Rome, Italy. Electric fields and gravitational fields are alike in the sense that they both act upon a system and are dependent of it. There are 3 types of metals for electricity conducting: metallic conductor, semiconductor, and superconductor. Their electrons are bound tightly and cannot move. Connect the 3-phase circuit as shown in gure 1.2. For this experiment, I got the negative charges from the sweater for both balloons. Record the results in your notes. electrochemistry-lab-report-conclusion 2/5 Downloaded from uniport.edu.ng on March 3, 2023 by guest reaching down even to the molecular level. This force decreases as the distance between the charges 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. Why or why not? One of these is silver. If writing by hand, write clearly, legibly, and neatly so that anyone, especially your TA, can read it easily. With this movement have come new types of applications and rapid advances in the technologies and techniques needed to fabricate the increasingly miniature devices that are literally changing our world. The lucite plate is positively charged by being rubbed with silk. Repeat the demo using the sim with the charges on. The study of the Coulomb forces among arrangements of stationary charged particles is called electrostatics. If the needle has not fallen to 0 after five minutes, record an estimate of its angle at the five-minute mark. 438v+3. First, we observing what happens. Physics 2 Static Electricity Lab Report University The University of Texas Rio Grande Valley Course General Physics II (PHYS1402) Uploaded by Amanda Joy Academic year2020/2021 Helpful? Include in the discussion the vocabulary: induction; compare with charge transfer and Placeq 1 andq 2 4cmapart. when using the two different charges opposite to each other the puck would go twice as fast towards the negative charge puck. Now remove the lucite rod. a one gets from the charge. Enter the email address associated with your account, and we will email you a link to reset your password. Once the The experiment used a method known as titration to determine the amount of acetic acid in vinegar by percentage mass. Provide details on what you need help with along with a budget and time limit. earth. If the negative rod is brought near an isolated, neutral conductor, the conductor will also be polarized. the field is directed inward towards the charge (figure 1b). Therefore, to demonstrate the inverse \(r\)-squared dependence of Coulomb's Law, we need to measure the displacement as a function of the separation between the centers of the balls. For example, to measure to position of the front of the hanging ball, line up the front edge of the ball with its image. Using Coulombs law, we can explore the effect of the distance, between two charged particles, on the force between them. For this experiment, do not shine the flood lamp on the electroscope. Electrostatic Lab [1] Purpose: To determine the charge and charge distribution on insulators charged by the triboelectric effects and conductors charged by an Electrostatic Voltage Source. Figure 1. (Refer to the theory section, if necessary.). Is there any difference in the behavior of the needle compared to the results in procedure 6? We can observe attraction and repulsion between electrically-charged objects. Make, sure the tapes are sufficiently far so that they do not interfere. 1 1 m 6 V 4 V/m What is the average distance a spark will jump? iii. (Do not confuse electrical polarization with the polarization of light, which is an entirely different phenomenon.). game. of Energy (DoE) report found - with "low confidence" - that COVID likely accidentally leaked out of a lab in China. After that, I then made him touch the doorknob and all of the negative charges followed through the door. Are you in need of an additional source of income? USW00094728 A mirrored scale permits you to determine the position of the balls. 12 Test Bank - Gould's Ch. Make sure that they understand that this is commonly called grounding. How does the arrow from the positive charge compare and Because lucite is an insulator, it remains charged until the charge leaks off slowly. number of positive and negative charges (thus an equal number of protons and electrons). Electrostatics 1991, - B. C. O'Neill 1991 The Eighth International Conference on Electrostatics organized by the Static Electrification Group of The Institute of Physics, was held at the University of Oxford In this case, we can conclude that the charge increases (V), there is a greater strength of the Electric Field (V/m). Record all measurements in table 1.1. when using the two different charges opposite to each other the puck would Objects of the same electric cha. The answers from #2 and #3 support the results from the investigation since the made him touch the doorknob and all of the negative charges followed through the door. with your partner what is happening when he touches the knob. Repeat the demo several times. Examine the image with a positive and a negative charge on the playing Estimating the charge of one . Observe what happens with the electroscope needle. Science. Materials such as metals are conductors. When we charge a material by friction, we are transferring some of the electrons from one material to another. Astronomy Lab due. the source of this attraction is due to the presence of static electric charge. Be prepared to start your timer. Recordtheforceonq 1 byq 2,F 21 andtheforceonq 2 byq 1,F 12 . Thus, the positive charge is attracted to the rod more strongly than the negative charge is repelled, and there is an overall net attraction. A chemical equilibrium is a state at which the rates of two opposing chemical (a)If 375J of heat are absorbed by the system, and it has 425 cal of work done by it, compute the change in the internal e What are some of the issues that we are have with global warming? Your eye is now perpendicular to the scale, and you can read off the position. balloon. slightly electrocuted. If high-humidity conditions prevent you from completing certain parts, you may try them again next week with the Van de Graaff experiments. The presence of the negatively charged balloon above the plate of the electroscope will induce the movement of electrons from the plate of the electroscope to the support and needle of the electroscope. same between the two charges. Students also viewed Bio 111 exam 1 study guide Laser Beam Lab - Lab Report Statistics Practice Lab Explore to develop your own ideas about electrical charge. 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. Most materials are electrically neutral they have an equal However, if a neutral object By grounding the end of the tube with your fingers, you are providing a pathway for the charges to move. Metallic conductors allow the free flow of ions and electrons through a sample; and its conductivity decreases as the temperature increases.. if you If you use two of the same charges to move the puck, it would move twice as fast, if you use two Using Coulombs law, we can explore the effect of the distance, between two charged the source of this attraction is due to the presence of static electric cha. when two non-conducting materials are rubbed together for example plastic and fur. Neutral particles do not interact with electrical forces. Once you rub the balloon to the sweater, it gathers electrons so that once you place the balloon on the wall it will stay up and attached to it. Studypool matches you to the best tutor to help you with your question. Basic Electricity Lab Report Uploaded by Bill Williams Description: To introduce the definitions, symbols, and units for current, voltage, and resistance, a lab was conducted with the basic circuit board with the end goal of comparing series, parallel, and RC circuits in mind. particles, on the force between them. 54 Comments Please sign inor registerto post comments. attachment_1. When objects are rubbed against each other they acquire electric charge. electroscope. Restate the Experiment's Goals. 4. After completing these experiments, it was observed that like charges repel one another and opposite charges attract. then repeat the demo using the sim. In this simulation, a little different model is used. What do you predict for the answer? The general conclusion is that there are two kinds of charge, which are in some way opposite. We say that the rod has induced polarization in the insulator, but its net charge is still zero. Is it still deflected? Some positive charges in the wall will move towards the and conclusions sections - and possibly what could have been done (if anything . USW000 popular science journals, physics homework help. when you rub a balloon on wool, this causes the electrons to move from the wool to the balloon's Include in the discussion the vocabulary: charge transfer and electric attraction. same rule applies that similar charges will repel each other and opposite charges electricity concepts. 3. 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). It is created when materials are pulled apart or rubbed together, causing positive (+) charges to collect on one material and negative (-) charges on the surface of the other. The excess amount of negative charge in his body will go through the doorknob as he touches it. Touch the lucite rod to the top of the electroscope. This way, you can obtain charges on the first ball of \(Q\), \(Q/2\), \(Q/4\), and so forth. What happens? and rubbing his foot on the carpet, once he touches the door knob that is metal he is shocked or USW00094728 Materials: 2. Definitely a returning customer. Write how the results of your USW00094728 Your body thus acts as an electrical ground. It depicts how the gravitational attraction force for small objects is insignificant when compared to electrostatic charge. The electric field surrounding a charged object gets weaker with distance, the object It was found that the slope of the linear fit depicts that the electric field runs perpendicular to the potential lines, whose . where r is the distance between the two charges and k is called the proportionality constant and is equal to 9 x 109 N.m2/C2 .