PHYSICS FORM: 4D & 4E TOPIC: THERMAL PHYSICS Temperature determines the direction of net heat flow. It is the property o f an object. It’s the amount of kinetic energy a body possesses. Example Brass rod made hot at one end by placing it in a Bunsen flame‚ while other end is kept away at room temperature‚ there is a net transfer of energy from the high temperature region to the low temperature end. THERMAL EXPANSION (See chp. 16 in Physics Text). Three states of matter are solids
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variable is the amount (in mL) of CO2 gas produced by the yeast. The biotic factor in this experiment is what effect the concentration of the yeast has on its ability or inability to reproduce efficiently. The lab tests three different concentrations of the yeast: add 0.25 mL‚ 0.5 mL‚ or 1 mL of yeast suspension to the test tube. The independent variable is the amount of yeast concentration added and the dependent variable is the amount (in mL) of CO2 gas produced by the yeast. INTRODUCTION Yeast
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and efficiency of the precipitator is reduced. The precipitator has 99% efficiency and can be operated at high temperature (600° C). It is more economical and simple to use. WET COLLECTORS OR SCRUBBERS – Wet collectors remove particulates from gas stream by incorporating the particles into liquid droplets directly on contact. The collection efficiency of a wet collector is a function of the energy consumed in the air to water contact process. The energy consumed is directly proportional to the
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experience of the soldiers was beyond anything that had ever been faced before. A soldier who was attacked by poison gas says that “It seemed as if [his] lungs were gradually shutting up and [his] heart pounded away in [his] ears like the beat of a drum. On looking at the chap next to [him‚ he] felt sick‚ for green stuff was oozing from the side of his mouth.” (Pressey‚ “Poisonous Gas”). After getting attacked‚ this soldier isn’t only poisoned physically‚ but is poisoned mentally as he looks at the
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Non-combustible‚ substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood‚ paper‚ oil‚ clothing‚ etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Sodium carbonate Odorless white crystalline powder or lumps. Slightly alkaline (bitter) taste. pH (of freshly prepared 0.1 molar aqueous solution): 8.3 at
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Finish Line & Beyond Science Class 9th Matter in Our Surroundings Characteristics of Particles of Matter States of Matter Effect of Change of Temperature Effect of Change of Pressure www.excellup.com ©2009 send your queries to enquiry@excellup.com Finish Line & Beyond Introduction Everything in this universe is made up of material which scientists have named “matter”. The air we breathe‚ the food we eat‚ stones‚ clouds‚ stars‚ plants and animals‚ even a small drop of water or a particle
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Chemistry 105 A Final Exam 06/24/10 First Letter of last Name Dr. Jessica Parr Question 1 2 3 4 5 6 7 8 9 10 Maximum points 18 8 12 12 8 10 12 10 6 6 (Sub-T) PLEASE PRINT YOUR NAME IN BLOCK LETTERS Name: __________________________________________ Last 4 Digits of USC ID:_____ _____ _____ _____ Lab TA’s Name: _________________________________ Score (102) Grader Question 11 12 13 14 15 16 17 18 19 20 (Sub-T) TOTAL
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Chemistry 1211 Prof. Dan Schwartz Exam #2 Thursday‚ 3/13/2003 7:00 – 8:30 P.M. There is a single correct choice for each question. Answer all questions on the Scantron sheet by filling in the proper bubble with a #2 pencil. If you change an answer‚ erase the undesired mark thoroughly. Be sure to fill in the boxes for your student number‚ name and lab section; then correctly fill in the corresponding bubbles beneath them. A periodic table and other useful information are attached to the back
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WHAT IS FLUID MECHANICS ? FLUIED: Any thing whose particles can move easily from one place to another that means shape can be easily changed upon the application of negligible force. MECHANICS: Study of response of bodies upon the application of force. FLUID MECHANICS : Fluid mechanics may be defined as the branch of engineering science which deal with behavior of fluids under the condition of rest and
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enough hydrogen peroxide from the bottle to cover the liver in glass “E”‚ add a little more. Pour the same amount of water into tube “C”. A simple test for the presence of hydrogen gas is to hold a glowing wooden applicator stick at the mouth of the test tube or in the bubbles forming at the surface of the liquid. Hydrogen gas produces a popping sound. A simple test for the presence of oxygen is to hold a glowing applicator stick in one or more of the bubbles inside the tube. If oxygen is present‚ the
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