Experiment AM1.2—Centrifugal Force Student name JunJie Liu Student ID 1512042 Experiment Date 11 Feb 2015 Lab group Mech 7 Introduction In this lab report we show the basic methods of measuring centrifugal force using two counter balanced bell-cranks spin on a turntable (shows in figure 1) and able to calculate the centrifugal force with given conditions shows in figure 1. *Figure
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Physics Lab report Aammar Paracha Section MX Feb 6th 2015 OPTICS Abstract: This experiment revolves around using light rays and lenses. The experiment also discusses different properties of light rays. This experiment uses different lenses and measurements to produce images and observes different techniques to obtain the image position. Question and Answers: 1. Use your data to verify the Law of Reflection and then use Snell’s Law to calculate
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Make sure to edit the answer in your own words 1. The best choice of a technique when blood is found at a crime scene is analyzing the blood. In the genetics laboratory the person who contributes I would say is Alec Jeffreys as he is known as the father of genetic profiling. 2. Forensic Scientists examine tiny fingerprint details. These may be loops‚dots‚ forks‚ islands. Several comparison points must be perfectly matched for two fingerprints to be considered identical 3. Edward Foster studied
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Introduction In this lab‚ we experimented the effects of pH on the function of the enzyme catalase. Catalase is an enzyme that brings about the reaction by which hydrogen peroxide is decomposed to water and oxygen (Encyclopedia Britannica). The chemical reaction is shown as 2H2O2 = 2H2O + O2 (Keilin and Hartree 397). The reaction involves primarily the adsorption of hydrogen peroxide at the catalase surface. The decomposition of hydrogen peroxide by catalase is regarded as involving
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Introduction In this lab‚ the purpose was to verify Hess’s Law. Four main topics were covered during this experiment including enthalpy of reaction‚ heat of formation‚ Hess’s Law‚ and calorimetry. The enthalpy of reaction‚ ΔHrxn is the heat or enthalpy change for a chemical reaction. The energy change is equal to the amount of heat transferred at a constant pressure in the reaction. The change represents the difference in enthalpy of the products and the reactants and is independent of the steps
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’Neil 2002). The particular conditions that had to exist for this to apply were that the population had no mutation‚ had no natural selection‚ was a large population‚ had only random mating‚ and had no migration. For the cases to follow later in the lab‚ Cases 1 and 2 exemplify Hardy-Weinberg conditions. All of the others either have selection or not enough members in the population‚ which will be the most-closely observed
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Raquel Johnson October 19‚ 2014 Solids: Recrystallization and Melting Points Organic Chemistry 2423 Lab Report: Recrystallization Abstract: The purpose of this lab was to purify an unknown compound by recrystallization. Taking an unknown compound and identifying it by purifying it from its impurities through the use of hot gravity filtration. Then to determine the unknown you were to take the melting point. An unknown compound was recrystallized from hot water to produce 0.99 grams (67% recovery)
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The purpose of having a control when doing a lab is because it is the part that is already known and not likely to change. It is always important to have a stable variable in any experiment you do. This also helps with overlooking hidden variables so you can compare how the organisms in the control behaved differently from those in the experimental situation. The purpose of having multiple variables is to compare the difference between the outcomes with each of the different variables. It is important
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Introduction and Purpose: This lab focuses on how weight affects the time it takes for a rotocopter to fall from a drop height of 1 and 2 meter(s) respectively. The primary goal of this lab is to investigate and explain the relationship of these two factors. During the process of conducting this experiment‚ learning to design a lab will also be achieved. Research Question: What is the effect of weight on the time it takes for a rotocopter to fall from a drop height of 1 and 2 meter(s)? Variable
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oxidation of the 2 NADH molecules‚ which returns them to two NAD+’s (Freeman‚ 2011). Oxidation is the loss of an electron in this case H+. We used information from previous labs in which we tested
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