Marybeth Brooks Physics Lab III Specific Heat Capacity Lab May 25‚ 2011 Abstract The specific heat capacity of various metals can be calculated and compared to accepted literature values. Dropping heated metal samples into a calorimeter filled with water and then measuring the change in the temperature of the system accomplished this. The metal samples were heated in a boiling water bath and were assumed to be at 100 C when they were removed. It was added to a calorimeter and stirrer
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Specific heat is the property of the material that an object is made of. The greater the material’s specific heat and the mass‚ the more energy must be added to change its temperature. The goals of this lab were to calculate the specific heat of water and compare to the known value of 4.19J/°Cg. Another goal was to calculate the efficiency of the hot pot used for the experiment and to estimate the cost to heat water for a cup of tea and to bath in a bathtub. The thermal energy E= cm Δ T‚ required
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att t e s ie A few words on the history and future of surface chemistry For more than 400 years‚ important scientists and mathematicians like Leonardo da Vinci‚ Isaac Newton‚ Pierre Simon Laplace‚ Thomas Young‚ Siméon Denis Poisson‚ Josiah Willard Gibbs‚ Frederick M. Fowkes have done valuable pioneer work for the explanation of surface tension‚ capillarity‚ wetting and other interfacial problems. As a sector of physical chemistry‚ surface chemistry in connection with colloid chemistry established
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Sorry for the Loss Dealing with death and the loss of someone you love is possible one of the most difficult emotions to deal with‚ even though death is something that happens all the time‚ all over the world; death is actually the only certain thing in life. When someone we love die‚ we‚ as relatives‚ are put in a difficult situation in which we are expected to react a certain way. Unfortunately delivering the terrible news is sometimes almost as bad as getting them‚ it is never easy being the
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Part A After-TAX Cost Debt O’Grandy Apparel Company can calculate the after tax debt cost using YTM (CP + (FV-Nd /n) / FV +Nd /2) *2. Cp is (0.12/2) * 1000= 60 Semi-annually Fv is 1000 Nd is 995 – (0.025* 1000) = 970 N is 20*2 because it is semi-annually then you have to use Kdt= Kd+ (i-T) .The tax bracket is 40 percent. Now we can have the after tax debt when it is equal or smaller than $700000 Kd ( 1-T) = 0.1249 (1-0.4)= 0.07494. If it is more than $700000 it will be KD (1-t) = 0.18(1-0.4)
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used in a building‚ profit‚ loss‚ etc.). 2. Derivatives are met in many engineering and science problems‚ especially when modelling the behaviour of moving objects. 3. Calculus is also a base of economics. 4. It is used in history‚ for predicting the life of a stone. 5. It is used in geography‚ which is used to study the gases present in the atmosphere. 6. It is mainly used in daily by pilots to measure the pressure in the air. 7. Area under a Curve and area in between the two curves are
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Heat Waves What is heat wave? A heat wave is a prolonged period of excessively hot weather‚ which may be accompanied by high humidity. While definitions vary‚ a heat wave is measured relative to the usual weather in the area and relative to normal temperatures for the season. Temperatures that people from a hotter climate consider normal can be termed a heat wave in a cooler area if they are outside the normal climate pattern for that area. What are the symptoms of heat strokes and sunstroke
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Determination of specific heat Capacity of a solid by electrical method Introduction Thermal conductivity heat is transferred as a consequence of temperature difference between 2 bodies‚ heat energy passes form a hotter to the colder body. Specific heat capacity is the amount of heat energy required in joules to raise 1kg of a substance by 1 degree Celsius‚ different substances absorb heat energy at different rates not all substances require the same amount of heat energy to increase the internal
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Sensory loss Sensory loss takes place when a person’s sight or hearing becomes impaired. For some people who have been born with a hearing or sight impairment the term “loss” is inappropriate. However many people who have spent their lives hearing or seeing and will experience a sense of loss if these abilities are affected. Very few people are totally deaf or completely blind so design for sensory loss should be about supporting remaining ability as well as compensating by using other senses. There
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impacts of “growth in urban areas affects urban climate in several ways such as air pollution‚ altered wind speeds/wind direction and heat stress to a great degree affecting both urban flora/fauna and human health” (Baldasano et al. 2003). The excessive upsurge of unguarded development in the urban centers induces
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