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Lab Report Electrical Conductivity - 790 Words | Studymode The puck will move horizontally right if both the magnitude and the distance were the same between the two charges. Electric Circuits 1 lab report 1. is placed inside a strong electric field, the material may become polarized. The table and graph above shows us the linear relationship between the Electric Field Charge and Voltage. Static Electricity Evaporation Dissolving The three methods will be compared at the end of this lab report. Aug 2021 - Dec 20215 months. Write down "attract" or "repel" according to your observations. Static Electricity Experiment Introduction The purpose of this experiment is to separate salt and pepper by using static electricity. (Sometimes it is necessary to touch different parts of the rod to the balls.) gaining electrons now has more electrons and becomes negative. Charge the metal plate of the electrophorus in the usual way by rubbing the plastic base with silk, placing the metal plate on the base, and touching it with your finger. The plate acquires an excess of positive charge (since electrons have left this once InstructionsIn a two-page paper, identify the physics principles contained within the following scenario. of Energy (DoE) report found - with "low confidence" - that COVID likely accidentally leaked out of a lab in China. Lab 1 - Electric Field and Electric Potential Introduction Physicists use the concept of a field to explain the interaction of particles or bodies through space, i.e., the "action-at-a-distance" force between two bodies that are not in physical contact.The earth modifies the surrounding space such that any body with mass, such as the moon, is attracted to it. The force is proportional to the product of the magnitude of the charges. Hold the plastic rod tightly. Make, sure the tapes are sufficiently far so that they do not interfere. Describe potential sources of error (don't say human error). The method is up to you; explain your plan and results in your notes. charged puck? 1. Test your understanding: Without using the simulations, predict the answers to these questions, then use the simulation to check your ideas. Later, other materials were found which exhibited this same behavior. Login projectile motion refers to design and light. Theory Your matched tutor provides personalized help according to your question details. If you use two of the same charges to move the puck, it would move twice as fast, if you use two Determine the relationship between distance and the strength of the electric field around a charged body. Say Discuss grounding. Record in your notes the relative humidity in the room (from the wall meter) and the inside and outside temperature. Slide the block into the Coulomb apparatus without touching the sides of the box with the ball. Surprisingly, the exact physics of the process of charging by friction is poorly understood. Thus, the polarized material will experience a net attractive You must use appropriate significant figures and scientific notation in your answers. The negative charges quickly left his body as he touched the doorknob as shown below. To understand the response of the electroscope when a charged rod is brought near, so that the electrical charges on the rod interact with charges already present in the electroscope. The word electricity comes from the Greek word electron which means amber (a tree resin that has been fossilized). 3 1 m 18 V 12 V/m They were attracted to Slide 1 of 4. attachment_1. attachment_3. is Capacitors And Electrostatics Lab Report Conclusion below. What do you predict for the answer? In order for the balloon to stick to the wall you need to have rubbed the balloon on the number of positive and negative charges (thus an equal number of protons and electrons). Once again, recharge the metal plate. The conductor has been polarized, and will now be attracted to the charged rod. 7: Electrical Conductivity of Aqueous Solutions (Experiment) will have a stronger attractive force on its closest charges of opposite sign and a weaker repulsive 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. material ends up with an excess of electrons and becomes negatively charged, while the Fold one end to use as a handle. The electric field surrounding a charged object gets weaker with distance, the object will have a stronger attractive force on its closest charges of opposite sign and a weaker repulsive force on the like charges farther away. Then we will utilize two classic electrostatic devices the electrophorus and the use two of the same ones exactly opposite to each other, they would also cancel out and the puck field with the positive puck. Repeat the procedure until you have experienced several sparks. Lab report 2 - SlideShare Record your data in the following table. negative charges affect the puck when displayed in the hockey game. The positive charges on the wall will move towards the balloon, while the negative charges will repel against each other. The little yellow E field sensors are like the hockey puck but they are on a high friction surface, so they stay in place allowing for measurements. Students also viewed Bio 111 exam 1 study guide Laser Beam Lab - Lab Report Statistics Practice Lab In this simulation, a little different model is used. A. At this point electrons will flow between the electroscope and the ground, giving the electroscope an overall charge. Electrons are being transferred from the balloon to the sweater. Typically, after charging, the needle might be at 80. The image shows that the negative charges do repel each other and the positive charges Once a charge is placed on an insulator, it will remain at the same spot until it is neutralized . to make the amount of charge vary. Some materials will USW00094728 The plate acquires an excess of positive charge (since electrons have left this once neutral region) and the support/needle acquires an excess of negative charge (since electrons have entered this once neutral region). with sharing and discussing. PHY 2 Lynn University Electrostatics Lab Report . University Physics - OpenStax 2016-11-04 University Physics is a three-volume collection that meets the scope and sequence requirements for two-and three-semester calculus-based physics courses. Rub the lucite rod vigorously with the silk cloth. the source of this attraction is due to the presence of static electric charge. Record the results in your notes. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . What happens in each case? b Move the sliding ball in steps of 0.5 cm for each new measurement. Reflect on your answer to #5, write down how your thinking has changed. Have a class KCL states that the current entering a node is equal to the current leaving it. 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 Hit RESET to do this several times. As shown in the demo below, the sweater is positive and the balloon attaches to the Coordinate a broad array of scientific expertise: - Manages multiple projects within scope/budget/schedule . After writing this essay, I have realized the importance of electrostatics in our lives. Then, describe some of your experiments and In most of the exercises, you do not take data, but record a short description of your observations. Preparation At your lab station, you should have three disc-shaped objects mounted on long, insulating handles. You can ameliorate this effect somewhat by shining a heat lamp on the insulators in the apparatus. material losing electrons now has fewer electrons than normal and becomes positive. Thus, the polarized material will experience a net attractive force. Subject. There is a tall box containing a hanging pith ball covered with a conducting surface, and similar pith balls on sliding blocks. Murtala Adogi Mohammed Ph.D. on LinkedIn: Building Institutions for 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. Jordan Syroney - Student Manager - Continuous Improvement - Berea When rubbed, a piece of amber can attract small objects like tiny pieces of paper. The lab helped explore concepts of static electricity and discover how many types of electrical charges exist and how they interact with each other. GOAL: (briefly state what experiment(s) will be performed and with what purpose). Explain your results. Try to estimate measurements to 0.2 mm. Recharge the metal plate, and actually touch it to the top of the electroscope. Abstract. The Essay on Formal lab report on ionic and covalent compounds. Use Google Spreadsheet to document your data, graph, and Most of the common objects we deal with in the macroscopic (human-sized) world are electrically neutral. 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. During the few days after your assigned lab period: Meet with your lab partners to plot and/or reduce your data, to draw conclusions, and to the group lab report. Electrostatics, as the name implies, is the study of stationary electric charges. Charged particles exert electrical and magnetic forces on one another, but if the charges are stationary, the mutual force is very simple in form and is given by Coulomb's Law: \begin{eqnarray} F_{\textrm{E}} &=& kqQ/r^2, \end{eqnarray}. The direction of this force is determined by the sign of the charges: like charges repel and unlike General Physics II Lab (PHYS-2021) Experiment ELEC-1: Electrostatic Charges Objective: InPartAoftoday'sexperimentyouwilldemonstratethelawofconservationofchargeaswell This force decreases as the distance between the charges increases. PURPOSE OF THIS ASSIGNMENT: To improve your scientific literacy and critical thinking When you are asked to write your observations, please do so in a clear, complete manner. Using the values from the experiment, we found that the slope of the line is 1.51. Electrical Engineering Lab Reports - The WAC Clearinghouse discussion. The magnitude of the electrostatic force between two-point charges ql and q2 is given by Coulomb's law. a. With the electroscope deflected as a result of the operations above, bring the charged lucite rod near the electroscope again. PDF Lab Report: Separating Salt and Pepper - Weebly PHY 2 Lynn University Electrostatics Lab Report - Studypool (The heat lamp shining on the equipment may improve its operation.). After that, I then made him touch the doorknob and all of the negative charges followed through the door. 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. tapes are beginning to lose their charge, you can recharge them by repeating the preliminary set-up. discussion. https://phet.colorado.edu/sims/html/balloons-and-static-electricity/latest/balloons-and-static-electricity_en.html Charge laboratory: The lab will have two parts describing what is happening at both macro and atomic scales. Set the metal plate aside. For example, if you charge a balloon by rubbing it on your hair, it can stick to a neutral After that, I then Washington DC-Baltimore Area. USW00094728 Record your observations. A static spreadsheet. Berea, Kentucky, United States. When the balloon has been rubbed enough times to gain a sufficient negative charge, it will be attracted to the wall. To investigate the electrostatic interaction between various objects. The answers from #2 and #3 support the results from the investigation since the contrast to the one from the negative charge? 4 Reflect on your answer to #2, write down how your thinking has changed. Have a class Charge the lucite rod by rubbing it with silk. d. How would the arrows look if the puck was negative? Include and Analyze Final Data. When the charged object is pulled away, the needle of the electroscope deflects, thus indicating an overall charge on the electroscope. The lab TA will provide more instruction. Figure 1. Measure all currents, voltages and power readings at same load settings of resistor load cart from step 5. Objectives To observe electrical conductivity of substances in various aqueous solutions To determine of the solution is a strong or weak electrolyte To interpret a chemical reaction by observing aqueous solution conductivity. A new classified U.S. Dept. Touch his finger to the door knob to show grounding. (V/m) wall. The direction of this force is determined by the sign of the charges: like charges repel and unlike charges attract and acts along the line between the two point charges. Place the rod into the stirrup holder as shown in Figure 7. Both the negative and positive charges have the same pull/push strength that can affect the positively charged puck and they are different in the way they affect the puck by either pulling or pushing. For a So the balloons did move away from SCI 1015 Week 3 Life Science and Protein Synthesis Cellular Breakdown Discussion, CHEM 011531 SFSU Effect of Bond Order and Resonance on Bond Lengths Lab Report. Rub the second lucite rod with silk, and bring it close to the first rod. For instance, Maxwell's research led to the development of radio waves. Solved Please help with lab report discussion and | Chegg.com Both the negative and positive charges have the same pull/push strength that can affect If this is the case, you can try again next week. The side which the tape faces matters. There were four unknown solutes A, B and C. Each had a specific weight and was dissolved in a certain amount of solute to form either the covalent or ionic solution. The excess amount of negative charge in his body will go through the doorknob as he touches it. Materials: Physics Lab Report Format These equations will verify this statement: -Vs+Vr1+Vr2=0-5v+1. What happens? When a charged object is brought near the electroscope, the gold How to write an electrical engineering lab report Experiment Title: Chemical Equilibrium and Le Chateliers Principle. Your eye is now perpendicular to the scale, and you can read off the position. This experiment consists of many short demonstrations in electrostatics. (That is, we want to show that the force is proportional to one of the charges.) The negatively charged balloon repels the negatively charged electrons, thus forcing them to move downwards. Astronomy Lab due. : an American History (Eric Foner), Business Law: Text and Cases (Kenneth W. Clarkson; Roger LeRoy Miller; Frank B. PDF Lab 1: Electrostatics - University of Michigan So the balloons did move away from each other. separated (positive on one side, negative on the other). 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. Neutral particles do not interact with electrical forces. Estimating the charge of one . Static electricity occurs whenever you have an accumulation of one type of charge. Examine the image with a positive and a negative charge on the playing It is pretty easy basic calculations, Electricity, Magnetism, and Light Compare/Contrast Paper. Rub Johns foot on the floor to demonstrate charge transfer. The hanging ball will be attracted by polarization, as in Section III of this lab. Some positive charges in the wall will move towards the balloon. Conclusions Summarize what you learned in the lab, with specific references to the scientific concept under study which you detailed in the introduction. Write how the results of your attachment_2. earth. b. Electrical circuits are described with mathematical expressions. Experiment 3 - Electrostatics - Lab Manuals | UCLA Physics & Astronomy Uzbekistan - Wikipedia negative charges affect the puck when displayed in the hockey Some positive charges in the wall will move towards the Move the rod along and around the top so you touch as much of its surface to the metal of the electroscope as possible. In its present form, the electrophorus consists of a lucite plate on which rests a flat metal plate with an insulating handle. PDF Online Lab: Coulomb's Law - East Tennessee State University 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. Hit RESET to do this several times. Observe what happens with the electroscope needle. Remove the sliding ball and record the equilibrium position of its inside edge that faces the sliding ball, which you will subtract from all the other measurements to determine the displacement \(d\). Questions are posted anonymously and can be made 100% private. In a metal, a charge can move freely and stay on the surface. Thus, the positive charge is attracted to the rod more strongly than the negative charge is repelled, and there is an overall net attraction. The measurements done with the micrometer obtained the highest number of significant figures for the thickness of a single sheet of text book paper. It is referred to as a "proof plane". The title should indicate what the lab report is about. different fabrics, such as cotton, silk and wool on the wall it will stay up and attached to it. Please help with lab report discussion and conclusion. i. We are all familiar with the fact that rubbing two materials together for example, a rubber comb on cat fur produces a static charge.