ABSTRACT. In this experiment‚ we test factors which affect friction. We pulled a wood block across a surface to determine whetherthe surface area ofthe block orthe type ofsurface affectsfriction. We found that the surface area of the block did not change the coefficient of kinetic friction‚ while the types of materialsin contact were directly related to the coefficient of kinetic friction. INTRODUCTION Friction is a part of our everyday life. Nearly every movement we make involves friction
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Moderate amount of effervescence is produced . Pop sound is heard . The glowing splinter is ignited with violent flame and extinguished within 8 second as the glowing splinter is inserted . . 2 Boiled liver (cooled) No effervescence is produced . No changes occur No sound is heard . The glowing splinter is extinguished as the glowing splinter is inserted . 3 Pulped liver High density of effervescence is produced vigorously . Pop sound is heard .The glowing splinter is ignited with spark
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Lab Report An enzyme is a protein that speeds up the rates of chemical reactions. They recognize‚ bind‚ and change specific reactants. They do not change so they can catalyze the same reaction again and again. Activation energy is the amount of energy needed in order to begin a chemical reaction. A Catalyst is a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change. Catalysts are substances or a substance that configures another substance
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Introduction: During this unknown lab report various test were performed to differentiate microbes from each other and to compare metabolic and biochemical process. The gram stain distinguishes between Gram positive and Gram negative bacteria based on the composition of the cell wall. The Gram stain procedure distinguishes between Gram positive and Gram negative groups by coloring these cells red or violet. Gram positive bacteria stain violet due to the presence of a thick layer of peptidoglycan
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INTRODUCTION The measurement of fluid flow is very important in our daily life from measurements of blood-flow rates in human artery to the measurement of liquid oxygen in a rocket. In this experiment‚ students are to adapt to various ways to measure the flow of essentially incompressible fluids by using the flow measuring apparatus. Students will also be able to understand the application of Bernoulli’s equation in this experiment. The flow is measured by using a venture meter‚ an orifice meter
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Frequency Distribution (A) Introduction 1. Ungrouped data versus grouped data Ungrouped data (Raw data): It is a list of individual observed values of the random variable Grouped data (a frequency distribution): It is a table that displays the data in grouping along with the number of occurrences that fall into each group. 2. The components of a frequency distribution a. Class limits: They identify the inclusive values in a class of a frequency distribution The
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Sample Short Lab Report By Charles M Borener Jr April 24‚ 2009 Kinetic Friction Experiment #13 Joe Solution E00123456 Partner - Jane Answers PHY 221 Lab Instructor – Chuck Borener Thursday‚ 11 AM – 1 PM Lecture Instructor – Dr. Jacobs Abstract In this experiment‚ we test factors which effect friction. We pulled a wood block across a surface to determine whether the surface area of the block or the type of surface effects friction. We found that the surface area of the block did not change
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Name: Alicia Rose Date: 08/28/2014 Graded Assignment Lab Report Answer the questions below. When you are finished‚ submit this assignment to your teacher by the due date for full credit. (3 points) Score 1. How do you calculate magnification on a microscope? Answer: The shortest lens is the scanning objective; you use it to locate the object on the slide. The medium-length lens is the low-power objective. The longest lens is the high-power objective. Multiplying the power of the eyepiece
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coefficient‚ isolation coefficient and directivity of the directional coupler are calculated and recorded in Table 3. Results: Frequency‚ GHz | 1.4 | 1.5 | 1.6 | 1.7 | 1.8 | 1.9 | 2.0 | Voltage‚ Vtune | 1.4 | 2.3 | 3.6 | 4.9 | 6.1 | 7.4 | 8.4 | P1 (Input Power)‚ dBm | 0.48 | 5.63 | 6.55 | 6.00 | 5.80 | 5.47 | 5.97 | Table 1: Input power to directional coupler Frequency [GHz] | P2 | P3 | P4 | | Output Voltage [mV] | Output Power [dBm] | Output Voltage [mV] | Output Power [dBm] | Output
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Lab Report 1 Introduction: Proper chemical formulas entitle many challenges such as the Law of Multiple proportions that states that there may be more than one plausible mole ratio for the elements in that compound. However if we determine the mass of each element in the compound we will be able to get the true chemical formula. In this experiment‚ we used the law of definite proportions to find the chemical formula for a hydrated compound containing copper‚ chlorine‚ and water molecules
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