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These results are shown in the table below. Relationship between initial and final velocities in an elastic collision . This cart also had a rod to assist in readings. 2 0 obj If the speed of the object increases, its kinetic energy increases. Place the calorimeter (no lid) on the balance and tare the balance. SOLUTION: Kinetic Energy Student Guide Lab Report - Studypool It goes from 414.2 kilometers per hour (kph) to 0 kph in 2.8 seconds. After these values were calculated the ratio of the final kinetic energy to the initial kinetic energy was calculated in order to compare the values. The first Photogate sensor measured the velocity of the standard cart, and the second Photogate sensor measured the velocity of the plunger cart. 124 lessons. In a car, the chemical energy stored in the gasoline is released when it is burned in the engine; that chemical energy is ultimately converted to kinetic energy and results in the motion of the car. If there is a difference, distinguish between what happens . If the compound possesses the qualification of an electrolyte, it can be identified as an ionic compound, seeing as ionic compounds are capable of conducting electricity when dissolved in water. In the limit that m 2 m 1!1, v 1f! Complete the conversations by choosing the more logical verb in parentheses and writing it in the preterite. and securely tape the cylinder to the board with the packing tape. When you are finished, submit this assignment to your teacher by the due date for full credit. In the lab, the aim was to get as close as possible with both accuracy and precision when determining the mass and volume of the spheres. In this condition the two carts were placed together in the center if the Photogate Sensors. PART I: Examining the Effect of Material and Mass on Thermal Energy Transfer d. Repeat Steps 4bc for 50 g of the steel wire. For more information, please see our Justify the hypothesis from a chemical standpoint. These sensors were attached to a computer, which was running the Logger Proprogram, through a Vernier computer interface. Wet sand 100 20 53 33. The standard cart moved to a velocity of zero and was still. These sources of error include human error such as not keeping the acceleration constant, changing the force placed on the van, and by starting or stopping the timer late. Go to pages 5 to 7 of Assignment Booklet 2B and answer questions 10 to 15. Whenever an object moves, some energy is converted to heat through friction. The main objective of this experiment is to carry out qualitative analysis to identify metal cations in unknown solution 1. Then remove the .75m desk and place it on the ground. these samples. Pour out some of the water from your soda bottle to adjust the total mass of, water and bottle to 0.125 kg (125 g). Dry Sand Meter sticks should be. Because the percent differences were relatively close to zero the momentum of the system was conserved. B. They then continue on together with one final velocity. As the height decreases the _________ will decrease while its kinetic energy increases. Each object can only have a certain amount of energy and that energy is in different forms. Understand the role of the mass in a conservation of energy situation. Endnotes: We traded experiments and materials with another group, so each group got a chance to watch an unbiased group perform their experiment. Therefor elastic collisions can be defined as collisions in which kinetic energy is conserved. Ionic bonds are also known as electrovalent bonds. Suggested Answers 1. Cookie Notice For observation 1 and 2, pour 1 cup of water into a pan and place on stove on high heat. 3. No items have been added yet! I'm remaking this, so it'll be more coherent. Record an initial temperature for each type of material energy is also obvious, are known as elastic collisions. = This equation can become a powerful tool when analyzing all types of collisions. Try to let For observation 2 add. touching the materials to assess their thermal energy. When collisions occur, two properties of the colliding bodies are changed or transferred: their Energy and Momentum. The purpose of this experiment is to see how height affects distance and to see how adding additional height affects the distance that the ball travels. If the cart maintains at a constant speed, then the cart will have an increase in acceleration. This allows for a more accurate measurement. Aqueous solutions are solutions that water is solvent. The balls have equal kinetic energies (k1=k2)(k_1=k_2)(k1=k2), but ball 1, which is coming from the left, is moving faster than ball 2 (v1>v2)(v_1>v_2)(v1>v2). These ions attract each other and create an ionic bond. The function Positon=404.289cm/s^2(t^s) + 44.450cm/s(t) +4.876cm was identified. endstream endobj 500 0 obj <>stream B is a filter feeder or a detritivore. This will serve as a backstop for launching the duck. a. If the mass of an object increases, then its kinetic energy will also increase because, mass and kinetic energy have a directly proportional relationship and have a linear, Independent: mass of the soda bottle (changing amounts of liquid), Measure the length of your wooden board, and divide that in half to mark at, its midpoint. What is the diver's speed (in m/s) when he hits the water? other two cups, filling one with 100 g of wet sand and one with 100 g of dry sand. hVmH+qW$RREWUw{Clt!AT` v6\`@8\TL)55 5DxnIe%xnkFgQ \ a. One cart was a standard cart with a rod on top. If you have access to a supervised laboratory, do Part A. 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Gizmos is an online learning tool created and managed by ExploreLearning Pre-Lab|In Lab 12) lesson on Edgenuity Entropy Energy And Chemical Equilibrium Lab Report ELECTRIC CIRCUITS LABORATORY MANUAL Lab 3 Out of Class - Lab 3 Answer Key Lab 6 - Lab 6 Answers Aae340hw3 solution AAE340 appendix - Lecture Appendices - Useful info for HW. Cross), Forecasting, Time Series, and Regression (Richard T. O'Connell; Anne B. Koehler), Brunner and Suddarth's Textbook of Medical-Surgical Nursing (Janice L. Hinkle; Kerry H. Cheever), Principles of Environmental Science (William P. Cunningham; Mary Ann Cunningham), Psychology (David G. Myers; C. Nathan DeWall), The Methodology of the Social Sciences (Max Weber), Biological Science (Freeman Scott; Quillin Kim; Allison Lizabeth), Give Me Liberty! Velocity is how, The purpose of the experiment was to use previous knowledge of velocity yo perform kinetic energy calculations, make calculations of gravitational potential energy, and to determine what affects GPE and KE more. What buret reading should you record when the liquid level is as shown in Figure 2? releases or absorbs thermal energy by chemical processes. Ionic bonding is a type of chemical bond formed between two ions with opposite charges. Trim off the bottom half of three foam cups. This cart also had a rod to assist in readings. does not begin to cool. An example of an elastic collision is a cue ball striking a billiards ball initially at rest. Think about what you already know about energy. endobj e. Measure out approximately 50 g of lead pellets, record the exact mass in Table B, and Explore the relationship between mass, speed, and kinetic energy using a laboratory Hypothesis #1 If the mass of an object increases, then its kinetic . Therefor inelastic collisions can be defined as collisions in which kinetic energy is not conserved. Lab #6 - Work-Kinetic Energy Theorem Therefore, if the work done by a particular force appears not to be equal to the change in kinetic energy of the object, then the system should by analyzed for possible work (positive or negative) done by other forces. At the maximum height, __, the object's GPE will be a maximum. The standard cart moved to a velocity of zero and was still. Course Hero is not sponsored or endorsed by any college or university. In this experiment we will be measuring the rate of decomposition of hydrogen dioxide with the following reaction: In the first experiment, How does mass affect your game? it shows that the data on Ball- Mass 3 that the 10 pound bowling ball had the highest kinetic energy of 27(J), the greatest velocity (m/s) of 3.42, and in average it produced 4 bowling points. Anything that has mass and is moving, like a train, a moving ball, or an atom has a certain amount of energy. f. Allow the metal samples to reach thermal equilibrium with the boiling water over the J. Reassemble the calorimeter and position the thermometer. . >> Raise the thermometer and lid off the calorimeter, and carefully transfer the bundle of Ionic bonds form their bond when opposite charged ions in a chemical compound have an electrostatic attraction. The energy stored in an object while at rest in a gravitational field. Introduction: Chemical reactions are dependent upon two factors: temperature and concentrations of substance. 1 0 obj If you do not have . The conservation of the energy is happening in the presence of conservative forces like gravitational forces or the _____________. You are never to simply list answers to considerations. Set up samples to examine thermal energy transfer with varying material and mass. E. PART II: Examining the Effect of Material Type on Thermal Energy Transfer and Specific Heat Step 2: Note State and Appearance. A rod was used to push down the button on top of the plunger cart. %PDF-1.5 Two carts, that had already been weighed, were placed in the track. I'm remaking this, so it'll be more coherent. 3. To unlock this lesson you must be a Study.com Member. In the presence of nonconservative forces (like __________), the total mechanical energy is not conserved. a. When the standard cart reached the plunger cart they collided, stuck together, and continued down the track with a new velocity. : an American History - Chapters 1-5 summaries; Analysis of meaning and relevance of History from the millennial point of view; Newest. When the standard cart reached the plunger cart they collided, stuck together, and continued down the track with a new velocity. Acids and bases are carefully regulated in the body by the lungs, blood, and kidneys through equilibrium processes. D is a herbivore or a carnivore. Then push the duck so it is compressed and is going to launch horizontally . Double-click the bottle of NaHCO3 to move it to the Stockroom counter. Record this initial temperature for the three metal samples in Table B. Organismic Lab Lab1- Dichotomous Key Introduction A dichotomous key is a series of paired statements or questions that are used to categorize organisms with their similarities in characteristics and or structure. Use a thermometer to check the hot water bath temperature, which should be near 100C Record your time in your data table in seconds. We can say that one form of energy (potential energy) is converted in another form of energy (kinetic energy). Heat Transfer - The movement of thermal energy from one object to another of a different temperature. Ionic bond, table salt. These resources will help you complete the assignment. an object in motion Kinetic object This is because of the law of conservation of momentum. Explore different tracks and view the kinetic energy, potential energy and friction as she moves. The standard cart was pushed towards the plunger cart, which was at rest. The desk will then be used to launch from a vertical displacement of .75m place the duck up against the book and launch it horizontally, again collecting 5 separate data points and taking the average of the. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. The mass was determined by weighing the spheres on the Analytical Scale and Triple Beam Balance Scale. This will teach how to do momentum calculations for a variety of different situations where momentum is conserved - calculations that will illustrate the nature of momentum, and the fact that momentum is in fact conserved. Ionic bonding is a crucial topic to understand within general chemistry reactions. Science | Graded Assignment | Lab Report | Elasticity Name: Keli Parks Date: 8/14/2022 Graded Assignment Lab Report: Elasticity Answer the questions below. After the lab was over this data was analyzed using the equations above to give the following values. cup, allow the reading to stabilize. in Table A. The purpose of this lab is to explore the relationship between mass, speed, and. As the height decreases the GPE will decrease while its __________ increases. a. You probably found that your values for KE were slightly less than that of GPE. The next condition tested was inelastic collisions. In the equation, 404.289cm/s^2(t) represents the slope of the parabolic curve pertaining to the distance(cm) over time(sec) as the 4.876cm displays the y-intercept in which the function crosses the axis leading to the resulting curve. Sample calculations are shown for Privacy Policy. This is a valuable physics lab skill. The analysis of the results of this experiment shows that momentum was conserved in all types of collisions. Accuracy is how close the average of the measured values are to the actual value. These values were recorded, and the procedure was repeated two additional times for a total of three readings. Write a statement to explain the molecular composition of the unknown solution based on the results obtained during testing with the Biuret solution and each sample solution. Conservation of Energy- lab handout. Record these guesses in Table A. On the other hand, the evidence shows that the 12 pound bowling ball in Ball- Mass 2 has the velocity (m/s) of 3.12, the kinetic energy of 23 (J), and the average bowling points of 4 . 1. The purpose of this lab is to test substances and to determine the physical and chemical properties of substances. The initial velocity of the standard cart and the final velocity of both carts, moving together as one, were measured using the Photogate sensors. Measure 200 mL of water with the graduated cylinder and transfer it to an. In this lab this was analyzed in multiple collision situations. - Explore the relationship between kinetic and gravitational energies, The m is the mass of the object and v is the velocity of the object in motion. Dry sand 100 19 63 44 The analysis of these values showed that momentum is conserved in all collisions. Energy that exists by virtue of an object's motion is called the Kinetic Energy. Every radioactive element has a different halflife. G. Establish an initial temperature of the metal samples. The fact that the kinetic energy ratio was very close to one shows that the kinetic energy is conserved in elastic collisions. Since it's still and high up, the object only has GPE. . Measure the mass of your ball on the balance. SAMPLE LAB REPORT SCI141: Biology Sections Introduction All cells are bound by a functional cell membrane. A rod was used to push down the button on top of the plunger cart. Fill close to the 0 mL line but not higher, or you will not be able to measure volume accurately. 2. If this was added in to the momentum equation the ration of the final over the initial momentum would likely be much closer to one. Apply the properties of kinetic and potential energy. (3 points) Covalent bond, methane. circle, each equidistant from the lamp. These values were recorded, and the procedure was repeated two more times for a total of three readings. After these values were calculated the ratio of the final kinetic energy to the initial kinetic energy was calculated in order to compare the values. One thing that, The purpose of the experiment was used to determine which team created a design that ultimately proved to launch the marshmallow the farthest. This includes knowing the displacement, velocity, and acceleration of objects. Textbook questions 4 and 5 of "Practice Problems," p. 179 Acids and bases are encountered frequently both in chemistry and in everyday living. The sums of the multiples of each balls mass and velocity before and after the collision should be equal as is shown in the above equation for the conservation of momentum. Why or why not. Kinetic energy is a property of a moving object or particle and depends not only on its motion but also on its mass. stated britannica editor Erik Gregerson. e. Remove the steel wire sample and empty the calorimeter. %PDF-1.5 To determine whether the height at which a marble is dropped affect the size of the crater. It can be proven that there were multiple sources of error by the slope of the equation on the Force vs. Acceleration group for this lab. %PDF-1.6 % The first condition tested was elastic collisions. Its like a teacher waved a magic wand and did the work for me. Momentum cannot be lost in a collision. All objects have momentum, even if it is zero, and momentum cannot be lost. Calculate thenumber of radioactive atoms remaining after each halflife. Time can vary slightly as needed to The other cart was a plunger cart, which contained a spring activated plunger that could push the carts apart. Visit EdgePlus+ for a purchase key. and tare for zero. They should start immediately when you drop it and stop it exactly when it hits the ground. Overall the total energy (kinetic plus potential) is conserved. b) Load the HCl and NaOH burets with HCl and NaOH solutions, respectively. a. Repeat Step 3a for the 200 g samples. " In a Dichotomous key each step has two . The carts were placed on the track so that the magnet containing ends of the carts were facing each other. One you have found this distance, focus more carefully on this position so that you can take a measurement from the edge of the table to the position where the duck initially contacted the ground. Kinetic Energy How Do the Mass and Velocity of an Object Affect Its Kinetic Energy? 2. This is the lab data explained. ANSWER KEY . Now find KE. Place the pH probe in the beaker and record the pH in the data table. This project will prove for once and for all if basketballs bounce higher with or without helium. d. Remove the aluminum wire sample and empty the calorimeter. The fact that the kinetic energy ratio was very far from one shows that the kinetic energy is not conserved in inelastic collisions. Practice dropping the soda bottle so that the bean bag pops up straight and, can have its height measure with the meter sticks. Discussion: The Work/Energy Equation says "The work done on an object by the net force on it equals the object's change in kinetic energy." or, in symbols: A practices intracellular or extracellular digestion. Today, we're going to see how this plays out in the real world. Using a 500 mL beaker If you pick up a 10 N book a distance of 2 meters, how much gravitational potential energy did you . In conclusion a basketball may look sample but its is very complex and can be very hard to manage. In elastic collisions kinetic energy was always conserved. (a) The balls will not move because K1=K2K_1=K_2K1=K2 before the collision. Dm is preferable! Create your account. Other researches had similar data but were never exactly the same. F"361:~Sx~(1 3a1Hf!&%d~~Iy9ed*0|bc_.Q|Akh'Se& fOr)/x The overall goal of this activity is to provide the students with a diagram that can help them learn and memorize the different characteristics associated with chemical bonding. In this condition the two carts were placed together in the center if the Photogate Sensors. Once you have created your file(s) and are, An aircraft weighing 18785 N returns to the aircraft carrier and lands. Additionally it showed that kinetic energy is only conserved in elastic collisions. If you measure it in grams, simply divide the number by 1000 to get kilograms. The ______________ is happening in the presence of conservative forces like gravitational forces or the force in a spring. 3 0 obj Concluding that in my Game 1 the velocity of the masses of the bowling balls decreased when the bowling balls were heavier and that the kinetic energy was lower as the mass increased in the bowling balls. This is known as the conservation of energy. The Photogate sensors were used to measure the velocity of each cart as it moved from the explosion site. As the height _________ the GPE will decrease while its kinetic energy increases. Let's practice our energy types. We can say that one form of energy (potential energy) is converted in another form of energy (kinetic energy). Lesson: Types of Chemical Reactions, Project: Thermal Energy and Chemical Reactions Students apply knowledge of technological design, as well as techniques of project-based learning in order to investigate the relationship between chemical processes and the release of thermal energy. Where: Assume that the velocity of the soda bottle falling from a height of 0.8 m will, be 4 m/s. After the time has elapsed, record the actual elapsed time in the Tfinal column in Table A. She has a Master's Degree in Cellular and Molecular Physiology from Tufts Medical School and a Master's of Teaching from Simmons College. At the __________ the potential energy is considered equal. They were joined together by the Velcro, and the plunger was pushed into the plunger cart. In the presence of nonconservative forces (like friction), the total mechanical energy is, In the presence of nonconservative forces (like friction), the total mechanical energy is not conserved. If this wasn't your finding and GPE was greater, you might have some errors in your timing for dropping the ball. QUESTION: How do mass and the type of material affect thermal energy transfer? In inelastic collisions kinetic energy was not conserved because the value of the ratio of initial and final kinetic energy was not close to one. increasing). Be aware that your course may or may not be on the file. Overall the total energy (kinetic plus potential) is __________. 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The raw data readings for the elastic collisions are shown below. Upon graphing the data, the best fit line was identified in order to find the formula of the function. The values of the velocities were shown on the Logger Proprogram. This was a result of miscommunication between group members that proceed to affect why the group had the lowest measurement of displacement.