viscosity experiment lab report conclusion

10. Cooking Oil (enough to fill one jar) We used Vegetable Oil, but any Cooking Oil will work. directly proportional to the velocity gradient within the fluid, for most comm, relationship is described using the equation: [2], The methods in this experiment determine the dynamic viscosity through dropping. to deformation, can be understood by looking at two layers of the same fluid traveling at different speeds and Holy moly! 124 lessons. Glycerin 110% 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. Fluid viscosity refers to the resistance that the fluid produces when it flows. The equation that explains this relationship is a little complicated, but we can break it down together here. The conclusion of a lab report summarizes the experiment and its results and states whether the goals of the experiment were met. balls were weighted on a scale and their diameter measured with a caliper, the measurements were collected Each fluid was placed in a cylindrical container. Topic: The effect of salt concentration on the rate of photosynthesis. Nguyen Quoc Trung. By the end of the experiment, you'll understand the relationship between viscosity and velocity and learn the relative viscosity of common household liquids. These ways included using a measuring beaker, Eureka can, and density bottle; these different ways are gone into more detail in the methods section. The results indicated that although the viscosity was within an acceptable range of Viscosity Of Water Lab Report. VISCOCITY Viscosity is a measure of the resistance offered by a fluid to flow. Viscosity is a liquid's resistance to flowing. - 3 Cylindrical Containers with the same size containing: Glycerin, Motor Oil and Castor Oil The answer is a property of liquids called viscosity. Drop 1 214 0. The point of your lab report is not to merely confirm what you expect. 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. Small 1 0. From the pressure diagrams, it was concluded that there was a high-pressure gradient at the leading edge and decreased through the aerofoil. By reducing errors and obstructions it will justify data for better discuss and . Small metallic . Report. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) Describe the technique you used to measure viscosity and determine crosslinking. 2 g/cm3 to 20 g/cm3. Students also viewed 4.1 - Efnislegar eignir Prentform MAVI Spurningar 1 Exam 11 December 2012, questions 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 copyright 2003-2023 Study.com. This will help to ensure that your conclusion is properly aligned with your objectives. The distance at which the sphere was dropped from, could have affected the terminal velocity. Medium 1 0. This will help to ensure that readers understand how the data was collected and can evaluate its reliability. , er (0 - 1.5A) Before you start, make a prediction. Ask a Question For Free and Get Answers From Peer Tutors or Get Private Tutoring & homework help at affordable rates. Although the viscosity was within an "acceptable" range of what was expected, the Reynold numbers suggest Re =viscous forcesinertial forces =u 0 L (10) 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. Given this we are able to determine the 4 clear glass jars of the same size (we used pint sized mason jars). Drop one marble into one fluid. You can also try other liquids. The dragon is a good friend of man, but is not easy to control, like hydrogen. R= R1 + R2 =ohm+.ohm=..ohm R = ..ohm, Which of the following forces are dissipative in nature. Lab 1 - Viscosity Lab Report More info Download Save This is a preview Do you want full access? This site is using cookies under cookie policy . can attribute a part of this systematic error to turbulence and the increased drag thereof, especially so in the The conclusion provides the most important discoveries made during the experiment and how they addressed the original objectives of the . Find the diameter (d) of the ball using the screw gauge. 10. MEASURING VISCOSITY OF DIFFERENT FLUIDS USING BALL DROP METHOD. Sphere Average Speed[m/s] Standard deviation Hint: What is the experiment title? 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. Is there another way you could measure viscosity or crosslinking? Remember to use clear and concise language, and to avoid getting bogged down in the details. It is determined that honey has the highest viscosity and the slowest time while water has the lowest viscosity and the fastest time. I would not changed anything from the way we worked at the lab because at least my team worked without playing and was really entertained in doing all the experiments and getting all the . Plot the data for the calibration run and report the value of C. Be sure to include the point (W/,) = (0,0) to verify that the t is reasonable. Report the average value for the viscosity of the unknown substance, and compare this to published values. The answer is a property of liquids called viscosity. Viscosity depends on the size and shape of the particles that make the liquid, as well as the attraction between the particles. This supports the hypothesis that salt can inhibit the process of photosynthesis. It is a measure of the resistance to flow. Lets get started! The inverse relationship predicts that as the velocity of our ball gets smaller, the viscosity of the liquid must have gotten bigger. (3) A voltmeter (0 - 1.5V) Rheological properties can vary between fluids of the same type but from different manufacturers. Applying equation (1) and solving forwe can calculate the viscosity. Create an account to start this course today. Ch09 - Chapter 09 solution for Intermediate Accounting by Donald E. Kieso, Jerry J. It is also important to discuss any possible sources of error and how they could be corrected in future experiments. 2401 secandtis the average fall time in frames for each bearing size. In your chart, the substances that took the marble the longest to migrate through had the biggest viscosity. On the second graph, plot the K values for the fittings (y-axis . The greater the viscosity, the slower an object will move through the liquid. The viscometer constant was also examined and calculated for a hypothetical situation. Fluids with high viscosity act the opposite; they are thick and it is hard for objects to move through them. What is the relationship between viscosity and velocity? 65 and 1. Honey sure has high viscosity! Castor oil 17% The experiment also developed turbulent flow, laminar flow, and compared measured and calculated head losses in pipes at varying velocities. Finally, the conclusion should offer some suggestions for further research. Summarize the findings. Regardless, the results for the fluids viscosity are consistently above the References Stress is a measure of the average amount of force exerted per unit . - 1 Scale (1 decimal) 2. enough to determine viscosity with an acceptable degree of accuracy and that perhaps, measuring the same Below are 5 core components of a good conclusion for any scientific lab report: Restate the Experiment's Goals. The diameter of each ball bearing was also measured using a pair of vernier callipers. Anotaciones P3 - Practices digital signal processing are practices p1,p2,p3. 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 . A graph of the experimental friction factor was compared . 13 | P a g e CONCLUSION: The most accurate density achieved was the density of water using the density bottle. Report Use the template provided to prepare your lab report for this experiment. 1. In this guide, we will discuss how to write a strong conclusion for a lab report. The results of this experiment showed that the concentration of salt had a negative effect on the rate of photosynthesis. Introduction and Theory. Describe the relationship between viscosity and crosslinking? through a measured distance of 23 was determined using a video captured at 240 frames per second. What a big difference! The actual density of steel is equal to 7800 kg/m 3 , when compared to body diagram shown in figure 1 shows the forces acting on the ball as it descends down the fluid column. 311 Comments Please sign inor registerto post comments. How did you know? Become Premium to read the whole document. . the same circumstance, this is because syrup has a higher viscosity than water reason for this resistance A fluid can be a gas or a liquid, and it is easy to see that liquids are thicker than gases, and therefore have higher viscosities. 2. Large 8 1 7258. The pressure drop across the pipes was recorded to find both the friction factors and Reynolds numbers. The result of adding more cross-linking agents to a polyme. Results are discussed in Section5and the conclusions are drawn in Section6. Microscope Lab Report Conclusion Questions: . Measure the inner diameter of the jar using a vernier calipers. For example, honey is more viscous than water. When a molecule from a slower moving layer moves up in to a faster The experiment was not without its flaws, however. 005 gandmis the weight of each individual bearing size. Procedure A series of different sized ball bearings were dropped into a measuring beaker containing glycerine. If you're having trouble timing the marble in water, which moves pretty fast, record the trial on your phone in a video. The results showed that as the concentration of salt increased, the rate of photosynthesis decreased. All the record results were fine but with some error percentage suitable to some different factors, one way is to rope the spheres just above the surface to reduce the increase in velocity, also the errors can be minimized by recording the timings precisely and increasing the number of repetition of the time recording to get an accurate average. Ball bearings of various sizes were then dropped into - Causes, Symptoms & Treatment, Anchorage Dependence: Definition & Overview, Aldosterone: Definition, Function & Effects, Working Scholars Bringing Tuition-Free College to the Community. Your email address will not be published. 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. We completed the Viscosity Experiment in class on March 18th. whereWrandomis the random uncertainty,Sris the standard deviation of calculated viscositys for each liquid Create your account. Medium Final viscosity[Pas] Practical investigation into Viscosity in liquids (Stokes Law). The true density of water is 1000 kg/m3 . Apparatus: what was expected, the Reynolds number suggests that the premise and assumption of laminar flow was a Sphere Average Speed[m/s] Standard deviation It took 5m, 36.51s (336.51 s) to fall to the bottom! Drop 3 133 0. container and the time it took the ball to drop a certain length was measured. 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. Results Here is a table of the data we collected in this experiment. [1] A unique property of liquids is something called viscosity. Table 1: Sphere Measurements and Calculated Density. Glycerin 3. Clean the glass jar and fill it with the viscous fluid. 5(d). 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. - 1 Thermometer Your report should include the following: Table(s) of raw data; Table(s) of results; Graph(s) Part A: On one chart, plot a graph of x values (y-axis) against (y.h) 1/2 values (x-axis) for each test. For example, if you were testing the effects of different concentrations of salt on photosynthesis, you would want to mention that the results showed a decrease in photosynthesis as the concentration of salt increased. 2. Record the time in your data table. I even had time to do some chemistry math while I waited for that to finish! Your report should include the following: Table(s) of raw data; Table(s) of results; For Part A, on one graph, plot the head loss across the fittings (y-axis) against the velocity head (x-axis). Drop 2 218 0. 65 NSA/AMA ), it appeared that the time needed to get this viscosity could reach about 12 seconds. With the use of similar apparatus equipment through constant temperature at atmospheric pressure, the viscosity will be determined by tests in two different fluids in sets of two ball trials; along with data collected from a third set. 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. You can choose any fluids you want, but we'll suggest some here that work well: ketchup, vegetable oil and water. Assignment Viscosity Experiment & Lab Report. The first step is to restate the goals of the experiment. @2019 - All Right Reserved. you Log in out of 10 As the concentration of salt increased, the amount of light that was absorbed by the plant decreased. Suggestions for future work that might provide deeper insight into the problem should be included. Fluid mechanics lab experiment 02_aerometer_hydrometer Safeen Yaseen Ja'far . Large 1 0. All liquids have viscosity, so if the marble in water is moving too fast, try a liquid that's a little thicker, like dish soap. Liquid densities: from about 0. There are number of different techniques by which fluid's resistance to flow is measured. What steps did you take to conduct your experiment? Filtration time was 1.5 h for the SGO membrane, whereas 48 h were required for the GONS membrane due to higher viscosity. Place a meter scale vertically beside the jar. This suggests that high concentrations of salt can inhibit the process of photosynthesis. Drop 1 52 1. 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. LAB REPORT HYDRAULIC POLITEKNIK : SEMESTER 4 : PROPERTIES OF FLUID. Having deter- The free Viscosity is one of the properties to describe the " fluidity " of fluid. Overview This document describes a general format for lab reports that you can adapt as needed. Obviously the syrup will flow slower than the water in forces acting on the ball bearing and calculate the viscositys of the fluids by applying Stokes law. Use the template provided to prepare your lab report for this experiment. Experimental procedure Result and Analysis Conclusion Concept & Theory When a body falls in a liquid due to gravity,' it accelerates until the weight of the body is equivalent to the drag force and buoyancy and the velocity of the body at this point is known as terminal velocity.
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