A1 Studying force of friction Objective To investigate the effect on friction of the following factors: 1. normal force that presses the two surfaces together 2. materials that the two surfaces are made of 3. area in contact of the two surfaces Apparatus Rectangular wooden block Wooden plank Glass plate Plastic plate String Scissors Jack Spring balance Electronic balance Half-meter rule Retort stand and clamp G-clamp Trolley[pic]2 Standard weights (100g)[pic]5 Theory
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Friction Page 1 Lab: Friction William Morris Leo Hayes High School Friction Page 2 Purpose: To investigate the coefficient of friction for a given surface and the effects that factors such as weight‚ surface area and changes to the surface have on the coefficient of friction. Hypothesis: The smaller the amount of normal force (weight)‚ the less friction created and the least surface area and the greaser the surface the less friction is created. With
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Percent Error occurs due to many factors. In this lab by the graph I can state that there was a 100% error in all three unknown substances‚ Pure Leaf Lemon Tea‚ Sprite‚ and Tree Ripe Lemonade. This could be a result of not having properly zeroed the scale or the scale glitching when it came to zeroing it‚ which would have added extra mass and skewed the results. Another factor that could have resulted in a high percent error would have been the scale itself glitching which would have caused the wrong
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Experiment 1 Lab Report Title: Determination of caffeine content in tea bag sample by UV spectroscopic method Higher diploma in Pharmaceutical Science-Year 1 AS114202-1TM Fundamental Analytical Chemistry ASD3008 Lab Group 6: Ng Chung Hin 130439161 Wong Tin Yau Tony 130252529 Ng Wai Kin 130031247 Tam Chun Kit 130191034 Mau Kwan Yiu 130395762 Date of Experiment: 7/3/2014 Content Introduction Objectives Methodology Results Discussion Conclusions References Introduction
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Static Friction INTRODUCTION When an object is placed on a surface it will remain static unless the resolved component of the force due to gravity acting parallel to the surface exceeds the friction force associated with the static coefficient of friction between surfaces by placing various objects on a surface and tilting the surface until the object begins to slip. By measuring the angle at which the object begins to slip‚ it is then possible to calculate the coefficient of friction between
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Fluid Balance Explain in detail the fluid compartments of the body‚ including distribution of fluid and electrolytes within each compartment and the movement between compartments. In the average person water constitutes 60% to the total body weight.: 42L in a 70kg individual. 40% is intracellelular fluid‚ while remaining 20% is extracellular. The extracellular fluid can be divided into plasma (from intravascular compartment) and interstitial fluid intracellular fluid (28 L‚ about 35% of lean
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ERRORS IN MEASUREMENT Errors in Measurement Structure 2.1 Introduction Objectives 2.2 Classification of Errors 2.2.1 Gross Errors 2.2.2 Systematic Errors 2.2.3 Random Errors 2.3 Accuracy and Precision 2.4 Calibration of the Instrument 2.5 Analysis of the Errors 2.5.1 Error Analysis on Common Sense Basis 2.5.2 Statistical Analysis of Experimental Data 2.6 Summary 2.7 Key Words 2.8 Answers to SAQs 2.1 INTRODUCTION The
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THE EFFECT OF CHANGE IN pH ON THE ACTIVITY OF ENZYMES Introduction: Enzymes are catalysts that speed up‚ and control chemical reactions within a cell and break down complex molecules into smaller ones. Some of the chemical reactions that take place in the body produce toxic by-products which need to be converted. The liver produces hydrogen peroxide‚ which is extremely poisonous. When the catalase comes in contact with the hydrogen peroxide‚ it is broken down into water and oxygen. Aim:
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1. Animals Experiments were carried out in adult male Wistar rats (200-225 g; 2-2.5 months old)‚ obtained from Central Animal Research Facility‚ NIMHANS‚ Bengaluru. Adult rats were group-housed (3 per cage) in a climate-controlled vivarium with a 12:12 h dark/light cycle. All animals had free access to food and drinking water except during the stress procedure or behavioral evaluation. All the experiments were performed during the light phase between 10:00 h and-14:00 h. All experiments were approved
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Experiment 1: Errors‚ Uncertainties and Measurements Laboratory Report Department of Math and Physics College of Science‚ University of Santo Tomas Abstract With the use of the ruler‚ vernier caliper‚ micrometer caliper and electronic gram scale‚ the group was able to acquire different sets of measurements by measuring the sphere of unknown composition. The group then was able to compute its mean diameter‚ average deviation‚ average deviation of the mean‚ volume‚ mass and % percent
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