b) Load the HCl and NaOH burets with HCl and NaOH solutions, respectively. program. Student Guide (continued) a) Place the lid on the calorimeter, and insert the thermometer. 3. 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. After the lab was over this data was analyzed using the equations above to give the following values. descriptions of the heat gained by water, wet sand, and dry sand that you have made by The electrical conductivity of the compound when it is dissolved in water can assist in classifying the compound as ionic or molecular. Place the lid on the calorimeter, and insert the thermometer. This cart also had a rod to assist in readings. From identifying the distance-time graph equation, the next step is to find the velocity of the set data. b. e. Turn on your heat lamp(s). We'll study two main types of energy today. WorkKinetic Energy Lab Included, labeled and organized all parts of the lab report. Coil the wire The values of the velocities were shown on the Logger Proprogram. %PDF-1.5 Once you have created your file(s) and are, An aircraft weighing 18785 N returns to the aircraft carrier and lands. Attached to the track were two Photogate sensors. These results are shown in the table below. Privacy Policy. If needed, place the temperature. If the speed of the object increases, its kinetic energy increases. One atom borrows one or more electrons from another atom. Ionic bonds form their bond when opposite charged ions in a chemical compound have an electrostatic attraction. a. Joule (J) 4. A rod was used to push down the button on top of the plunger cart. endobj Visit EdgePlus+ for a purchase key. f. Allow the metal samples to reach thermal equilibrium with the boiling water over the bundle of steel wire. K. Transfer metal samples to the calorimeter and measure the temperature change. The standard. I feel like its a lifeline. energy is also obvious, are known as elastic collisions. Repeat Steps 68d for the lead In this lab, the possibility of experiencing sources of was extremely high as pushing a car and calculating the acceleration easily invited interference in otherwise perfect results. <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> 3. m 1 < m 2 If m 1 < m 2, then v 1f < 0, which is to say that object 1 reverses direction. This would force the carts to repel each other and not stick together during collision. I will add credit to the file and on this post. The first condition tested was elastic collisions. L. a. Lab Procedure. e. Remove the steel wire sample and empty the calorimeter. Additionally the lab taught how to properly work with carts on a Dynamic Track. The energy of a moving object is called kinetic energy. 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. 5) 5 mL of sugar was added to the solution and a balloon was placed over the opening of the bottle to minimize the loss of any gas from the system. Once you have created your file (s) and are Q&A A rescue diver of mass 89 kg jumps from a hovering helicopter into the ocean 20 meters below. We can say that one form of energy (________) is converted in another form of energy (kinetic energy), We can say that one form of energy (potential energy) is converted in another form of energy (_________). After the time has elapsed, record the actual elapsed time in the Tfinal column in Table A. Measure out approximately 50 g of aluminum wire using a mass balance. These values were recorded, and the procedure was repeated five additional times for a total of six readings. A 50 kg ball traveling at 20 m/s would have kinetic energy. 3. Lab Handout Lab 13. Place the strainer and lead in the hot water bath. Fill close to the 0 mL line but not higher, or you will not be able to measure volume accurately. Learn about conservation of energy with a skater gal! 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What was determined to be true was that the structure that contained the right configuration in producing a high amount of force proved to have the greater amount of displacement of the marshmallow. Record this in your notebook. I made this because I was having to do all the research and I would've loved it, if someone had already done this. /Length 2645 balance and tare for zero. In the presence of _____________ forces (like friction), the total mechanical energy is not conserved. The purpose of the experiment was to find the effect of a balls drop height on its return bounce height. Step 2: Note State and Appearance. All objects have momentum, even if it is zero, and momentum cannot be lost. Trim off the bottom half of three foam cups. The Logger Proprogram was set up so that it would collect the Gate Time from each Photogate sensor. of tape at these points to serve as targets. a. Also, to see how gravity pulls the ball down storing energy and releasing the energy as the ball hits the bottom of the ramp and to see the distance the ball travels after books are added. At the maximum height h, the object's _____ will be a maximum. B. This proved that momentum is in fact conserved. Therefor elastic collisions can be defined as collisions in which kinetic energy is conserved. In this experiment we will prove the conservation of energy by observing the interplay between kinetic and gravitational potential energy. Temperature is a measure of the internal energy of a system. Add water to the cup until the total mass reads 100 g. Repeat for the Kinetic Energy Lab Report Edgenuity Answers. Place a beanbag so it is centered on one end of the board at the target. We can say that one form of energy (potential energy) is converted in another form of energy (kinetic energy). <> Total score: ____ of 27 points (Score for Question 1: ___ of 3 points) 1. Get Energy Forms And Changes Lab Answer Key Pdf 2020-2023 - US Legal Forms. Record the equilibrium temperature in Table B. The final condition tested was explosions. We can say that one form of energy (potential energy) is converted in another form of energy (kinetic energy). program the reading from the first sensor was the initial velocity of the standard cart, and the reading from the second sensor was the final velocity of both carts. The most major of these is deceleration due to the force of friction. As the height _________ the GPE will decrease while its kinetic energy increases. c. Coil the wire around a pencil or other object, or fold the wire tightly to create a more Vocabulary Words . The ______________ is happening in the presence of conservative forces like gravitational forces or the force in a spring. To do the first experiment, the work-energy theorem is used. If using two lamps, place three cups under each. If a person riding a bike has a mass of 200 kg and is moving at a velocity of 5 m/s, what is their kinetic energy? 2. Try to let Find the values of (a) I2I_2I2, (b) I3I_3I3, and (c) R3R_3R3. There are four equations that can be used in both one-dimensional kinematics and two-dimensional kinematics. Energy that exists by virtue of an object's motion is called the Kinetic Energy. In other words, energy cannot be created or destroyed but it can be converted from one form into another. They are things for you to think about. In elastic collisions kinetic energy was always conserved. The carts were placed on the track so that the Velcro side of each cart was facing the other. The Logger. PART I: Examining the Effect of Material and Mass on Thermal Energy Transfer Step 2: Set up samples to examine thermal energy transfer with varying material and mass. 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). Typically an ionic bond occurs between one metal and one non-metal ion. Use the graph to answer question 2-3. This proves that momentum is conserved in collisions. 10 mL graduated cylinder - 2 g sodium chloride spoon - 2 g sodium bicarbonate conductivity apparatus distilled water in a wash bottle. Lay the board on its midpoint across the 2 diameter cylinder. So, multiply your value for height, the mass of the ball, and 10m/s2 to get GPE. b. 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. The word dichotomous comes from two Greek words that translate to "divided in two parts. In physics momentum is always conserved. The law of conservation of energy is a universal principle that says that the total energy of a system always remains constant. One cart was a standard cart with a rod on top. This includes knowing the displacement, velocity, and acceleration of objects. This is true because the value of the ratio of the momentum after to the momentum before was relatively close to one, or zero in the case of the percent difference for the momentum of the explosions. As the height decreases the _________ will decrease while its kinetic energy increases. No items have been added yet! At the maximum height h, the object's GPE will be a _______. an object in motion Kinetic object This means that. J. Reassemble the calorimeter and position the thermometer. a. 124 lessons. The volume is determined by measuring with a ruler and by water displacement. We can say that one form of energy (potential energy) is converted in another form of energy (kinetic energy). Students in an AP Physics lab perform an electrostatics experiment involving two charged spheres suspended, Introduction: Accuracy and precision were the major aspects of the lab. The slight discrepancies in the values of initial and final momentum can be explained by some sources of error. 2 0 obj 498 0 obj <>stream Half-Life Data-Teacher Answer Key 1.Hypothesize what halflifeis: Halflife is the amount of time it takes for approximately half of the radioactive atoms in a sample to decay intoa more stable form. - m is the mass This would force the carts to stick together after collision. If students have difficulties differentiating the characteristics associated with covalent and ionic bonding, they will suffer with future topics and other branches of chemistry. The standard cart moved to a velocity of zero and was still. So why would KE and GPE be different? complete other steps of the lab. The fact that the kinetic energy ratio was very far from one shows that the kinetic energy is not conserved in inelastic collisions. 6. The hypothesis that if it the ball was dropped from a higher drop points, it would have a greater bounce height was supported. 4. KE = KE = 2500 J 6. Because the percent differences were relatively close to zero the momentum of the system was conserved. temperature change, T, for each sample. Identify and describe the transfer of potential energy to kinetic energy. Open Edgenuity and enter the purchase key. Every radioactive element has a different halflife. A. ;18:/*wT$, Be aware that your course may or may not be on the file. stream The nonconservative work is the _________________________, Conservation of change in kinetic energy formula, Lab 9: Centripetal Force & Rotational Dynamics, Mathematical Methods in the Physical Sciences. any excess water drip off the wire sample, but make the transfer quickly so the metal Kinetic factor refers to DGa, activation energy; while the thermodynamic factor refers to DG =G 2-G 1, the driving force. Which samples will heat up faster? If you measure it in grams, simply divide the number by 1000 to get kilograms. What is its volume at s.t.p.? These values were recorded, and the procedure was repeated two more times for a total of three readings. There are many properties that distinguish an ionic compound from a covalent compound. Examining the teeth of an animal can give b) Swirl the thermometer slightly, and confirm that the thermometer is well within the water. You might think there is no friction in the air, but air is actually made up of millions of tiny gas molecules. This was calculated using the following formula. The initial velocity of the standard cart and the final velocity of the plunger cart were the readings from the first and second Photogate sensors, respectively, on the Logger Proprogram. Precision is the closeness of repeated measurements. 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. These results are shown in the table below. Next, we need to do some calculations to find GPE and KE. Water 100 21 39,0 18 Cite: answers.com Work =Fd Ex:Trial 1: 0.98N*1.47m=1.44J Kinetic Energy= 1/2mv^2 Ex: Trial 1: 1/2 (794.5g) (1.16m/s/s)= 534.5J For more information, please see our Accuracy is how close the average of the measured values are to the actual value. The first step was to graph the distance-time graph from the data collected. Click the Get form key to open the document and move to editing. As usual, you should refer to, 1. Go to pages 5 to 7 of Assignment Booklet 2B and answer questions 10 to 15. Lab: Kinetic Energy Assignment: Lab Report Instructions Click the links to open the resources below. Lab Report 10A - Lab 10 A from manual; PH-101 Lab #13 - Lab report; Endnotes: program was set up so that it would collect the Gate Time from each Photogate sensor. d. Remove the aluminum wire sample and empty the calorimeter. The final condition tested was explosions. We know that the law of conservation of energy says that energy can never be created or destroyed, so what happened? Meter sticks should be. 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. The ratio of the final momentum to the initial momentum was calculated for all conditions except the explosion. In experimental situations the numbers will not come out to be exactly perfect, but if the ration of the momentums is close to one it will indicate that momentum has been conserved. }0@d*>@%-B(B[Q>ND)]Ey%"IV*[]OHqWfjr7fzOSx SOLUTION: Kinetic Energy Student Guide Lab Report - Studypool Assume that the velocity of the soda bottle falling from a height of 0.8 m will, be 4 m/s. Dry sand 100 19 63 44 The experiment was executed by dropping three different balls of different masses at 100, 75, 50, and 25 centimeters. Repeat step 2 three times and average the times together. >> Additionally it showed that kinetic energy is only conserved in elastic collisions. Draw a circle, an X, or place a piece. copyright 2003-2023 Study.com. CLEANUP : Leave the test tube with wax stuck in it in the lab station. Lab: Kinetic Energy Assignment: Lab Report 1 See answer Advertisement zlskfrum Answer: Explanation: In this lab, two pieces of rock, one big one small, are dropped from the same height onto mud. There were no controlled variables used in this experiment. 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. Create an account to start this course today. - g is gravity (not to be associated with the acceleration due to gravity because g is a scalar) All other trademarks and copyrights are the property of their respective owners. In class we learned about the principles of acceleration, time, and velocity. This would force the carts to stick together after collision. Non-metals are stronger than metal and can get electrons easily from the metal. (Read Section 7 -3 for a thorough explanation of the W ork-Kinetic Energy Theorem.) Another type of energy that we will study is called, gravitational potential energy (GPE) formula. Then you can change the height of by adding a .75m desk on top of the .95m table. We used the equation Y=mx+b, in order to compare the velocity of each trial by comparing the slope and the y-intercept. I have a template, that is simple and clear to understand. The fact that the kinetic energy ratio was very far from one shows that the kinetic energy is not conserved in explosions. Hold the test tube with a test tube holder and heat the outside of the test tube with an aim and flame lighter until the wax melts. The standard cart was pushed towards the plunger cart, which was at rest. Also make a hypothesis about which type of material will heat up the fastest. hd Anything that has mass and is moving, like a train, a moving ball, or an atom has a certain amount of energy. As mentioned in the research, projectile motion was shown when the marshmallow was launching. then place a thermometer in each cup and observe the readings until they do not climb However, the analysis of kinetic energies proved that kinetic energy is not always conserved. El restaurante Dalia: Dnde (cenar / contestar) enter answer t y Daniel anoche? These resources will help you complete the assignment. endstream endobj 499 0 obj <>stream 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. These values were recorded, and the procedure was repeated two additional times for a total of three readings. In the presence of nonconservative forces (like friction), the _____________ is not conserved. When the standard cart reached the plunger cart they collided, stuck together, and continued down the track with a new velocity. ***Repeat steps 2-4 for each of the following: 5 mL of oil and 2 g each of cornstarch, sodium chloride, and sodium bicarbonate. As well as identify how accelerations affects an object's velocity and time. At the level of reference the potential energy is considered ___________. Current I1=2.50AI_1=2.50 \mathrm{~A}I1=2.50A. The goal of the experiment was to identify the gravitational acceleration from the recorded distance(cm) vs time(sec) data of a fallen object. Kinetic energy (KE), the energy of movement, and gravitational potential energy (GPE), or stored energy due to height. To determine whether the height at which a marble is dropped affect the size of the crater. 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). The next condition tested was inelastic collisions. There are multiple possible sources of error in this experiment. The analysis of these values showed that momentum is conserved in all collisions. These sensors were attached to a computer, which was running the Logger Proprogram, through a Vernier computer interface. releases or absorbs thermal energy by chemical processes. sample. 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. These values were recorded, and the procedure was repeated five additional times for a total of six readings. 2. Dry Sand 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. 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. b. The function Positon=404.289cm/s^2(t^s) + 44.450cm/s(t) +4.876cm was identified. HELP ASAP ITS 8th GRADE SCIENCE BUT IT DOESN'T HAVE THAT OPTION The graph shows the kinetic energy (KE) and potential energy (PE) of a bouncing ball o ver a period of 9 seconds.