tidal power. The earth itself is the key source of energy such as the following: Gravitational energy for hydroelectric power Chemical energy for nuclear power‚ electro- chemical reaction and hydrogen fuel cells. Geothermal power from the heat of lower crust. Other exciting energy sources are currently untapped‚ such as energy in the earth’s magnetic field‚ the energy potential caused by temperature differences in different layers of the ocean and the energy contained in combustible
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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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6 report Anita Dey Thursday 8am Abstract: We recently performed a liquid nitrogen experiment in finding the Latent heat of the substance. We isolated two parts of the experiment in order to find out how much evaporation of the liquid nitrogen was from the surroundings B and how much evaporation from the electricity G. 1. When a substance is undergoing a phase transition‚ more heat (energy) is being added to the Substance but its temperature (a way of measuring its energy) is not changing. Where
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before proceeding to further steps. 100 mL of chilled water‚ which is 10-15 ºC colder than the room temperature‚ was prepared and was poured into the empty can. An apparatus was installed with a stand and a holder. The can was placed hanging on the stand by a glass rod (the rod went through the hole of can’s handle (?) and was placed above the holder). The candle was installed right below (about 2cm below) the can. The room temperature and the water temperature were measured to the nearest 0.1 ºC and
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[pic]! [pic] ‘I’ll go out for a breath of fresh air’ is an often-heard phrase. But how many of us realize that this has become irrelevant in today’s world‚ because the quality of air in our cities is anything but fresh. The moment you step out of the house and are on the road you can actually see the air getting polluted; a cloud of smoke from the exhaust of a bus‚ car‚ or a scooter; smoke billowing from a factory chimney‚ flyash generated by thermal power plants‚ and speeding cars causing dust
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Muenster Pump Case Analysis I. Major Facts Related to the Muenster Pump Case A. The company has cast its own pump housings for over 40 years. A competitor is now offering a cheaper alternative should Muenster choose to outsource pump housings. Terri‚ Purchasing Manager for Muenster‚ has learned that Union’s quote of $90 is one half the price it takes Muenster to manufacture their own pump housings. She’s proposed outsourcing but met with resistance on multiple grounds. B. The ownership
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Air is the name given to atmosphere used in breathing and photosynthesis. Air supplies us with oxygen which is essential for our bodies. Air contains a variable amount of water vapor‚ on average around 1%‚ while air content and atmospheric pressure varies at different layers‚ air suitable for the survival of terrestrial plants and terrestrial animals is currently only known to be found in Earth’s troposphere and artificial atmospheres. Air is made up of 99% nitrogen‚ oxygen‚ water vapor‚ and inert
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Thermochemistry Heat of precipitation - precipitate is unsoluble salt - precipitate must be prepared through double bond decomposition or precipitation method Do you still remember what is meant by double bond decomposition? [please refer to salts notes] General equation double bond decomposition/precipitation; Ionic equation for precipitation reaction. Salt Solubility in water Li+‚ Na+‚ K+‚ NH4+ All salt dissolve in water Nitrate‚ NO3- All nitrate salt
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enthalpy of hydration of copper(II) sulphate to be made. The enthalpy change when one mole of anhydrous copper(II) sulphate is dissolved in water is first determined. Secondly‚ the enthalpy of solution of copper(II) sulphate pentahydrate in water is determined. ‚ Thirdly‚ the enthalpy of hydration of copper(II) sulphate is evaluated by using Hess’s Law of Constant Heat (Enthalpy) Summation. -------------------------------------------------------------------------------------------------------------------------
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Air and Water Pollution: The Gulf Oil Spill Stephanie Wolf University of Phoenix ENV/100 Principles of Environmental Science Cyraj El-Bakoush On April 20‚ 2010‚ BP’s oil rig Deepwater Horizon blew up in the Gulf of Mexico‚ killing 11 people and unleashing more than 200 million gallons of oil into the water (Sakashita‚ N.D.). The spill oiled more than 1‚000 miles of shoreline and a study from the Center for Biological
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