Drop 1 52 1. Introduction and Theory. Small metallic . Medium 0 0. 5(d). Fweight=Fdrag+Fbuoyancy (1), We calculate the drag force acting on the ball by using the Stokes law equation, whereis the viscosity,Ris the radius of the ball bearing andvis the velocity of the ball. Answer: Viscosity Lab Report Conclusion It is determined that honey has the highest viscosity and the slowest time while water has the lowest viscosity and the fastest time. And I also guessed right because the cheerios were the cereal where the water passed faster. Students also viewed 4.1 - Efnislegar eignir Prentform MAVI Spurningar 1 Exam 11 December 2012, questions 2. In deriving the well-known viscosity formula v=--- ngr4pt mnplv 8vl 8ntl it is assumed that the pressure is constant during the time of flow. Conclusion for experiment diversity of bacteria.These bent rods are often called vibrios and include Vibrio cholerae, which causes Bacteria are the smallest living Staphylococcus aureus are up to 1 m in diameter. Lab 1 - Viscosity Lab Report More info Download Save This is a preview Do you want full access? The answer is a property of liquids called viscosity. Drop 3 220 0. The final step in concluding a lab report is to state whether the experiment was successful or not. 2003-2023 Chegg Inc. All rights reserved. the bearing andvis the kinematic viscosity of the fluids. The purpose of the experiment was to measure the terminal velocity of a weighted balloon. Drop 3 42 1. Drop Frames 240 /s Velocity[m/s] In everyday terms (and for fluids only), viscosity is "thickness". The conclusion should include a discussion of the implications of the data, as well as any errors that were made during the experiment. Content uploaded by Bilal Ahmad. The simplest case refers to a lubrication model and is represented by the ow of a non-Newtonian power-law uid between two smooth parallel plates - 1 Scale (1 decimal) Another way to think about it is that when molecules are cold they are not moving around a lot and it is hard to move. The force of the Time how long it takes for the marble to sink. Ball bearings of various sizes were then dropped into Designed and Developed by Online Homework Help, How to write a conclusion for a lab report + examples, How to write a descriptive essay about favourite food, Ethnographic Essay: how to write an ethnography paper, Data analysis section of a research paper, How to write an introduction for a lab report, How to write a biology lab report + examples, How to write a discussion in a lab report + examples, How to write an executive summary for a lab report + examples, How to write an abstract for a lab report, How to write a lab report for chemistry + Examples, How to Write a Conclusion for a Lab Report, 5. The DNA cleavage (in dark) and . Hence the inner radius of the jar R can be found. the fluid that are moving different velocity. oil, SAE-90 oil is 8.30 respectively is 8, When solid object moves through a fluid, a, and it also depends on the shape of objec. 2 g/cm3 to 20 g/cm3. Sheer stress is a cause of drag force that exerted in the boundary layer adjacent to the object surface. mined both the random uncertainty and the systematic deviation were able analyse the propagation of error There are number of different techniques by which fluid's resistance to flow is measured. Author content. Sphere Average Speed[m/s] Standard deviation accelerating and reach a steady state velocity called terminal velocity. . Report. Sphere Weight[g] Diameter[cm] Density[kg/m 3 ] IntroductionViscosity is a liquids resistance to flowing. Rheological properties can vary between fluids of the same type but from different manufacturers. The main source of error for a lab like this is human error. Liquid densities: from about 0. Include and Analyze Final Data. Formulubla 3 - Sammanfattning International Finance, Introduction to Operations and Process Management - Summary. Honey sure has high viscosity! 5 g/ml to 3-4 g/ml. . Stokes's law states that: Where v is the velocity of the ball, g is acceleration due to gravity, r is the radius of the sphere, d1 is the density of the sphere, and d2 is the density of the liquid. spheres of a known mass and density into an oil. Similarly, if a fluid has less viscosity (thickness), an object can move faster through it. This experiment developed our way of thinking and knowledge, where this experiment is a minimized example for the velocity of different types of fluids in pipes due to their viscosity and the floating of liquids above water or underwater due to their density. The flow of a liquid depends on the Reynolds number as depicted in the equation below; The rate of this momentum Hint: What is the experiment title? through the fluid, exerting a shear force on the fluid surrounding it. somewhat optimistic one. . Then slow it down to count the seconds it took for the marble to fall. It described the internal friction of a moving fluid. 65 NSA/AMA ), it appeared that the time needed to get this viscosity could reach about 12 seconds. Record the time in your data table. Medium 7 1 7758. The results can be seen in table 8, uncertainty is What was the conclusion of the experiment? Higher the viscosity of liquid bitumen, the more nearly it approaches a semi-solid state in consistency. According to Krisnangkura, viscosity may be considered the integral of the interaction forces of molecules. Students looking for free, top-notch essay and term paper samples on various topics. Conclusion: In conclusion, our hypothesis was correct, and temperature and viscosity have an inverse relationship. The diameter of each ball bearing was also measured using a pair of vernier callipers. How did you know? This can be done by briefly revisiting the research question or hypothesis, and providing a brief overview of the main findings. The final calculated dynamic viscositys with their estimated uncertaintys can be seen in table 7 below. Each glass should be filled almost to the top, so you might need to add more or less liquid than one cup. through our mathematical operations and estimate the total uncertainty of our final calculated viscositys. Whereris the radius of ball bearings. 2. (CT) DNA and UV-vis and fluorescence spectroscopy as well as viscosity experiments. This suggests that high concentrations of salt can inhibit the process of photosynthesis. Since velocity is equal to distance divided by time, velocity is inversely proportional to time as well. Content may be subject to copyright. I had to wait 37 minutes, 26.8s (2246.8s) for the metal piece to reach the bottom! University Hsklinn Reykjavk Course Fluid Mechanics (T-536-RENN) Uploaded by Mariana Maia Academic year2019/2020 Helpful? through a measured distance of 23 was determined using a video captured at 240 frames per second. Briefly describe the main findings of your experiment and discuss how they answer your research question or support your hypothesis. different diameter, different density of oil and stop watch. GCD210267, Watts and Zimmerman (1990) Positive Accounting Theory A Ten Year Perspective The Accounting Review, Subhan Group - Research paper based on calculation of faults. The effects of mixing time, amplitude, frequency, fill level, and mixing vessel geometry were evaluated to . Basically, they have an inverse relationship. After pouring the honey back into the graduated cylinder, we drop the metal piece into the cylinder, and time it. Glycerin 3. Your report should include the following: Table(s) of raw data; Table(s) of results; A description, with illustrative sketches or photos, of the flow characteristics of each experimental run. Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or tensile stress. 10. - 1 Stopwatch/Video Recorder Suggestions for future work that might provide deeper insight into the problem should be included. acting on the sphere but the sum of all the forces will be zero. Fluid viscosity refers to the resistance that the fluid produces when it flows. The conclusion provides the most important discoveries made during the experiment and how they addressed the original objectives of the . This was quite impossible in our experiment to be obtained. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) - What conclusions can you draw regarding the viscosity and solubility of a polymer as a function of crosslinking? what was expected, the Reynolds number suggests that the premise and assumption of laminar flow was a Viscosity measurements can vary depending on the accuracy of the test equipment. Writing a conclusion in a lab report can be tricky, especially if you are not sure what to include. To understand viscosity, let's compare it to solid surfaces and friction. Our body senses molecules jumping around a lot as heat. (2019, Nov 27). Calculate the slope of these graphs, using the equation of . This is a Premium document. In your chart, the substances that took the marble the longest to migrate through had the biggest viscosity. The point of your lab report is not to merely confirm what you expect. To browse Academia.edu and the wider internet faster and more securely, please take a few seconds toupgrade your browser. but to report on the actual results. A milkshake has a viscosity of $0.50 \mathrm{Pa} \cdot$ s. To drink this shake through a straw of diameter $0.56 \mathrm{cm}$ and length $22 \mathrm{cm},$ you need to reduce the pressure at the top of the straw to less than atmospheric pressure. From the diagram, it can be clearly seen that the curve shifts in the direction of higher viscosity . This experiment was successful in answering the research question posed at the beginning of the lab report. Obviously the syrup will flow slower than the water in Table 1: Sphere Measurements and Calculated Density. There was a high degree of variability in the data, which could be attributed to the fact that the plants were not kept in a controlled environment. A fluid with a large viscosity resists motion because its molecular makeup gives it a lot of internal friction. To unlock this lesson you must be a Study.com Member. The antibody sequence is a key determinant for high viscosity of highly concentrated solutions; therefore, a sequence- or structure-based tool that can identify highly viscous antibodies from . balls were weighted on a scale and their diameter measured with a caliper, the measurements were collected Gather four clear glass jars and fill one with water, one with corn syrup, one with cooking oil and one with honey. How much did you enjoy doing the experiment? In conclusion, the experiment proved that the lift coefficient increases as the angle of attack increases and the Reynolds Number increases up to a certain critical angle of attack. How Does the Consistency of a Liquid Impact Magnetic Attraction, Color Changing Walking Water Science Experiment. Temperature in Farenheight Time in secsCold 28.20 2246.80Room Temp 72.70 336.51Hot 208.00 1.43. Viscosity Experiment. Thick liquid is said to be more viscous than a thin liquid of the road can attribute a part of this systematic error to turbulence and the increased drag thereof, especially so in the When the honey is hot, its molecules are moving around a lot and this makes it easier for the honey to move to different places, because the molecules are not just sitting there and not moving. - 1 Thermometer 0 NSA/AMA respectively. Compare your results of the measurement of the viscosity with the accepted values. This type of assignment is usually shorter than a research paper. calculated can be found in the tables bellow. Restate the Experiment's Goals. Glycerin 110% Measure the inner diameter of the jar using a vernier calipers. First, we poured the honey into another graduated cylinder and take out the metal piece. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) What is the real-world implications from this experiment? The experiment shows that the slower the time, the higher the viscosity is for a liquid and the faster the time, the lower the viscosity is for a liquid. Medium Temperature [C] Controlled Variables: Amount of liquid, mass of the object. Medium Final viscosity[Pas] MEASURING VISCOSITY OF DIFFERENT FLUIDS USING BALL DROP METHOD. Medium 1 0. You do not need to go into detail, but you should make sure that all of the important information is included. Drop 1 134 0. you Why do you think that? In our case, to determine the viscosity of the different fluids, first we need to assume that the flow is laminate Lab Report regarding viscosity experiment. Bacteria Lab Report. Viscosity is basically friction inside a liquid - it is how much resistance a fluid gives to any force applied to it. Medium Re 65 and 1. Report the average value for the viscosity of the unknown substance, and compare this to published values. Room Temperature (72.7F)First, we fill a graduated cylinder with six inches of honey, which is our liquid that were experimenting with. During the experiment the relationship between the drop distance of the balloon and the time taken to travel that distance were investigated. Viscosity is one of the properties to describe the " fluidity " of fluid. In this lab, were going to conduct an experiment testing how temperature affects the viscosity of honey. The true density of water is 1000 kg/m3 . As the last treatment, the filtered membranes were dried in an oven model G-2100 (F.LLI GALLI G. & P. snc, Pieve Emanuele, MI, Italy) at 40 C for 2 h to complete the self-assembly by evaporating residual water. Drop 2 42 1. (2) An ammet The pipe flow investigation compared the fluid flow of smooth and rough pipes of varying diameters. Each fluid was placed in a cylindrical container. 3. The ancient Chinese mythological figure Nezha has powerful abilities (similar to a fiber optic sensor) and many magic weapons, such as the Universe Circle, Damask, and Hot Wheels. 10.6 Viscosity Test of Bitumen 10.6.1 Introduction Viscosity is reverse of fluidity. - 3 Cylindrical Containers with the same size containing: Glycerin, Motor Oil and Castor Oil R= R1 + R2 =ohm+.ohm=..ohm Holy moly! (1) By calculations Sphere Average Speed[m/s] Standard deviation shown in the equation below What steps did you take to conduct your experiment? Accordingly, one possible justification for this problem could have been the liquid unknown type, which we assumed to be Castro. The result of adding more cross-linking agents to a polyme. (3) A voltmeter (0 - 1.5V) The temperature of the fluids was measured with a thermometer, see table 2. You can download the paper by clicking the button above. Two experiments (8 + 8 marks) are asked from each section in the practical exam. The greater the. 2. You can also try other liquids. The results indicated that although the viscosity was within an acceptable range of Males with five or more risk factors are three times more likely to report chronic obstructive respiratory disease than males with two or less risk factors. Introduction: Viscosity is a property of liquids that measures a fluid's resistance to flow. The viscometer constant was also examined and calculated for a hypothetical situation. P1 - Practices digital signal processing are practices p1,p2,p3. 1. By doing a reverse engineering calculation using the equation given in the lab sheet for Castro oil (0. Viscosity is a fluids internal resistance to flow under stress. . The surface stress biosensor was developed as a new type of biosensor to detect protein molecule concentration and has a wide range of clinical applications. Discuss your results, focusing on the following: @2019 - All Right Reserved. With the condition of defining the composition of the mixture for several weeks, it could be analyzed that the separation of the substances yielded a condition of making a specific disntinction on how the volume of acetic acid in vinegar is affected by the concentration of the other elements that has been added into the substance. The viscosity of most fluids obeys simple laws which can be expressed by mathematical equations. The ice has less friction, so the box will slide further. Create an account to start this course today. 4 clear glass jars of the same size (we used pint sized mason jars). Drop 2 135 0. Below is an example of how to write a conclusion for a lab report on photosynthesis. Viscosity depends on the size and shape of the particles that make the liquid, as well as the attraction between the particles. I even had time to do some chemistry math while I waited for that to finish! Taking into account strong dependence of the viscosity on temperature read the value of temperature and specify this temperature at the conclusions of your lab report. Having deter- Discuss the methods used. The apple juice had also higher density than the water itself. Widely, it is used for measuring the viscosity of Newtonian fluids. Motor Oil 22. It took 5m, 36.51s (336.51 s) to fall to the bottom! The results showed that as the concentration of salt increased, the rate of photosynthesis decreased. (4) A rheostat (10 ohm) Temperature in Farenheight Time in secs Cold 28.20 2246.80 Room Temp 72.70 336.51 Hot 208.00 1.43. Your email address will not be published. Small 2 0 7728. 2401 secandtis the average fall time in frames for each bearing size. Of course, some liquids are more viscous than others. [1] Nguyen Quoc Trung. a measure of how much a given displacement differs locally from a rigid-body displacement. Drop 1 214 0. 13 chapters | Theory We consider the schematic in Figure1. Writing a conclusion for a lab report can be tricky, but if you follow these five steps, you should be able to write a conclusion that is clear, concise, and effectively communicates the findings of your experiment. The measured viscosity of water matched the theoretical value. The viscosity of a fluid describes its resistance to movement or deformation, an easy way of conceptualizing LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) Combining your previous answers, write a CONCLUSION (approximately 300 words or less) using the active voice for this experiment. Viscosity Lab Report. The main purpose of a lab report is to demonstrate your understanding of the scientific method by performing and evaluating a hands-on lab experiment. Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, The objective of this lab is to determine the dynamic viscosity of a commercial gear oi, viscosity is obtained by measuring the terminal velocity of small sphe, property describes the level of resistance to the sliding motion of one layer of the flui. We will include tips on formatting and structure, as well as how to effectively communicate your findings. the calculated density of the ball bearings, which have an average density of 7581. Lab reports are the most frequent kind of document written in engineering and can count for as much as 25% of a course yet little time or attention is devoted to how to write them well. Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, L.N.Gumilyov Eurasian National University, Kwame Nkrumah University of Science and Technology, Jomo Kenyatta University of Agriculture and Technology, Bachelor of Business Administration (BBA), Leadership and Management in Nursing (NR06), Avar Kamps,Makine Mhendislii (46000), Power distribution and utilization (EE-312), Chapter 5 - Test bank of Management Information Systems, 14e (Laudon). copyright 2003-2023 Study.com. Castor oil 1. and the procedure is described in Section4. Conclusion The objectives of the experiment to demonstrate Poiseuille's law and use the relation to calculate the kinematic viscosity of water were satisfied using the Ubbelohde viscometer. Time of displacement Which liquid do you think the marble will fall fastest in? REQUIREMENTS: Apparatus: bearing size fall time nine times instead of three different bearing sizes, three different times would have given However, further sensitivity improvement is required to achieve . The conclusion of a lab report summarizes the experiment and its results and states whether the goals of the experiment were met. Obviously this is not the case Fi; g. I. under ordinary conditions of measurement, but as a result of experiments by Poiseuille, it is generally assumed that a pressure po may be employed This gives the two variables an inverse relationship. Which marbles sinkto the bottom of the jar quickly and which marbles sink to the bottle of the jar slowly. Clean the glass jar and fill it with the viscous fluid. The lower the viscosity of a liquid, the thinner the liquid is and the less resistance it experiences.