Romar M. Cabinta EXERCISES 15 WORK‚ ENERGY‚ AND POWER A. CONCEPTUAL QUESTIONS 1. Is work done when you move a book from the top of the desk to the floor? Why? Yes. It is because the displacement of the book from the top of the desk to the floor and the force that is applied to the book is parallel with one another. 2. State the law of Conservation of Mechanical Energy in two ways? The law of conservation of energy states that energy may neither be created nor destroyed.
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How can alternative sources of energy be harnessed effectively? Finding Alternative energy sources is a significant issue from all over the world. In contemporary society‚ due to the lack of fossil fuels and environmental problems like air pollution‚ alternative sources of energy have being utilized widely for different domestic and industrial applications. Biogas is one of the alternative energy which instead of fossil fuels
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ENERGY RESOURCE PLAN Conserving energy is important to our society because it can extend the life time of non-renewable resources. Examples of these are oils‚ coal ‚ and gas. It also minimizes the use of larger more dangerous and environmentally damaging sources ‚such as deep sea oil and tar deposits. Currently the world produces 20 million barrels of oil each year. One-third of that is used by the United Sates. Concidering that only %35 of an oil well can be recoverd one-third is a lot to consume
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is adequate) we require all the supply to be used – even if it is not all needed. This results in higher than necessary costs. In part b‚ assuming supply is adequate to meet demand (when‚ in fact‚ it is) resulted in a smaller total cost as this solution does not require all the supply to be used. d. The shortage on print stock pulp can be reduced to 4 units (without sacrificing newspaper or packing paper pulp) at an additional cost of $307. 4. Because there is a 10% loss of flow on all arcs going
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How does my wind generator work? Every wind generator‚ whether they produce enough energy to power a city or to power a small radio‚ works on these same basic principles... 1. The wind blows 2. The generator’s vane (tail) causes it to turn into the wind 3. Blades attached to an alternator/generator experience the force of lift and begin to spin 4. The spinning creates electricity for us to use directly or to charge batteries Sounds pretty simple eh? Well‚ then how the heck do I build one
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Lab #7: Thermal Energy Heat is thermal energy being transferred from one place to another‚ because of temperature changes. This can take place by three processes. These three processes are known as conduction‚ convection‚ and radiation. When we place two objects with different temperatures in contact with each other‚ the heat from the hotter object will immediately and automatically flow to the colder object. This is known as conduction. Some objects make excellent conductors of heat while
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Heat Heat is the transfer of energy from a hot object to a colder object‚ such as when toasting a slice of bread. The heat transfers onto the slice of bread which results in warm toast. When the slice of bread is heated‚ many things change; for example‚ the texture turns crunchy‚ the bread hardens‚ and the colour darkens. Where does the toast get its heat from? The toaster. Toaster A toaster is an electric small appliance designed to toast sliced bread by exposing it to heat. When a slice of bread
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Can alternative energy effectively replace with fossil fuels? ‘’Fossil fuels are coal‚ natural gas and petroleum.’’ (http://en.wikipedia.org/wiki/Fossil_fuel) They are all organic residues. People use this for their energy‚ fuel and heating requirements. But fossil fuels polluting environment so much and people started to think about using alternative energy for their environment’s healthy. ‘’These alternative energy resources are windy power‚ solar energy and geothermal energy.‘’ (http://en
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Emerging Markets: BP‚ AAR‚ and TNK-BP Energy Resources AAR‚ BP bury hatchet over TNK-BP Shareholders in joint Russian oil venture TNK-BP confirmed they reached an agreement to settle outstanding issues to avoid arbitration. "BP and AAR‚ joint shareholders in TNK-BP‚ today announced that they have reached a comprehensive agreement to settle all outstanding disputes between them‚ including the current arbitrations brought by each against the other‚" a statement released by BP read. Russia’s
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Nicoletta Philippides March 15‚ 2013 Mr. Dunleavy‚ Period 4 The Effect of Fossil Fuels on Biodiversity & Alternative Energy Resources Fossil fuels are hydrocarbon deposits derived from the remains of ancient plants and animals under enormous amounts of heat and pressure. Oil‚ or petroleum‚ is one of the most common fossil fuels utilized by people all over the world on a daily basis. Crude oil is a smelly‚ yellow-black‚ viscous liquid composed of mostly nitrogen‚ oxygen‚ and sulfur‚ which is
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