Speed of Sound (Moving Tube) KEY Purpose: To measure the speed of sound in air using a variable length column of air. Apparatus: resonance-tube apparatus (an open ended tube which can be moved in and out of a container of water) constant frequency source (tuning fork or computer generated tone) rubber hammer meter stick rubber stopper Procedure: 1. Set Up the Experiment: Place the open ended tube into the water‚ and verify that it can produce a resonance tube length within the limits
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Discovering the Mystery of Eleven Test Tubes Karen Radakovich Ph.D. Mohammad Farhad Brittany Cina CH 223‚ Spring 08 Abstract: Eleven mystery test tubes labeled from K-1 to K-11 contained: 6M H2SO4‚ 6M NH3‚ 6M HCl‚ 6M NaOH‚ 1M NaCl‚ 1M Fe(NO3)3‚ 1M NiSO4‚ 1M AgNO3‚ 1M KSCN‚ 1M Ba(NO3)2‚ 1M Cu(NO3)2 respectively. The contents of the test tubes were determined by chemical experiments. Solution K-1 contained NiSO4 because when solution K-9‚ ammonia which was identified by its pungent odor
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The aseptically inoculate nutrient broth tubes A and B did not have any microbes inoculated into the tubes so it should not have been cloudy and that was what was seen. Tube C should have been cloudy because it had E. coli inoculated into the nutrient broth and that was also seen. A simple streak was also performed and it looks has if the loop went over previous streaks which should not have been done. A complex streak was also done. No colonies grew towards the end of the streak‚ this could be due
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COMPOSITES COURSEWORK DESIGN AND ANALYSIS OF A LAMINATED COMPOSITE TUBE ABSTRACT This report details the process for the design of a composite laminate tube‚ the software package ’MathCAD’ was used to determine a lamina design with a configuration that avoids mechanical failure under loading conditions. It was also used to obtain twist angles and maximum stresses for specific lamina wind up angles. The report will provide analysis of the methods used to obtain these criteria. AIM Use a Mathcad
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washed following cutting until not more colour appeared in the wash water. Materials 1. Washed cylinders of beetroot (1 cm in diameter‚ 4 cm long) in distilled water 2. 3 x test tubes 3. 1 x test tube containing distilled water‚ cyclohexane and a cylinder of beetroot‚ labelled TT4. 4. Test tube rack 5. A bottle containing 8 ml distilled water 6. A bottle containing 8 ml 50% acetone 7. A bottle containing 8 ml 100% acetone 8. Permanent marker pen 9. 1x sheet graph
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Name: ______________________________________ Date: ________________________ Student Exploration: Pollination: Flower to Fruit Vocabulary: anther‚ cross pollination‚ filament‚ fruit‚ nectar‚ ovary‚ ovule‚ pedicel‚ petal‚ pistil‚ pollen‚ pollen tube‚ pollination‚ receptacle‚ self pollination‚ sepal‚ stamen‚ stigma‚ style Prior Knowledge Question (Do this BEFORE using the Gizmo.) Plants use sunlight to produce sugar. Flowering plants make some of this sugar available to animals in the form
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10 Test Tube Mystery Introduction: The students were handed 10 test tubes with no identification. The students were supposed to design a method in determining what chemical was in each test tube. The list of chemicals is CuSO4‚ NH4Cl‚ NaOH‚ AgNO3‚ KI‚ H2SO4‚ NaBr‚ CaCl2‚ HCl‚ and Pb(NO3)2. The students are expected to determine the chemicals using physical properties‚ litmus paper‚ solubility‚ and the process of elimination. Physical properties‚ such as the color‚ can be determined by sight. Litmus
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Anoura fistulata‚ otherwise known as the tube-lipped nectar bat‚ is a nectarivorous species endemic to South America (Mantilla-Meluk et al. 2009). A. fistulata specializes in feeding on the nectar and pollen from larger flowering plants‚ but also frequently hunts insects to round out it’s diet (Muchhala et al. 2005). However‚ unlike other species of the same genus A. fistulata has co-evolved as a pollinator of the bellflower Centropogon nigricans (Muchhala et al. 2009). C. nigricans has developed
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Experiment 4 Measurement of e by Thomson’s bar magnet method. m Apparatus: Cathode ray tube (CRT) with power supply unit‚ one pair of bar magnets‚ high resistance voltmeter‚ magnetometer‚ stopwatch. Purpose of experiment: e To measure the specific charge‚ i.e. charge to mass ratio ‚ of an electron using m Thomson’s bar magnet method. Basic methodology: Electrons in a CRT are deflected in the vertical direction by applying a potential between the vertical deflection plates of the CRT.
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from minute achievements such as predicting the weather to controlling the weather itself one of which is among the numerous modifications to nature being made in recent times. Some other changes include genetically modified foods (G.M foods)‚ Test tube babies and cloning to mention a few‚ which have changed the interaction pattern between nature and human beings as we are now able to alter occurrences that have been ongoing since the dawn of time which can be said to be an achievement to be proud
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