should use solar energy in order to conserve environment. State whether you agree or disagree with this statement and support your opinion by referring to appropriate sources. In current society‚ the problem of the climate issue and of the finite nature of fossil energy sources is becoming increasingly serious. The need of renewable and clean energy becomes extremely urgent. But in the meantime‚ solar energy as new type energy cause people concern. In addition‚ whether using solar energy to protect environment
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Energy Resources and their Uses in Producing Electricity Renewable energy is energy drawn from natural processes that are restored quicker than they are used up‚ some renewable energy resources are biomass‚ food‚ wind‚ waves‚ flowing water‚ solar and geothermal. The sun however‚ is known to be the ultimate energy resource since almost all energy resources originate from the sun’s energy. This is possible according to the law of conservation of energy which states that energy can’t be destroyed
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Energy Nothing can live without energy. People‚ animals and plants need energy to live and machines need energy to work. Today‚ most of the energy we use still comes from fossil fuels like coal‚ oil and gas‚ which have been formed underground over millions of years. We called these non-renewable forms of energy because they can only be used once. Because of this‚ we need to reduce our use of non-renewable fuel and use more renewable forms of energy like that from the sun‚ wind or geothermal
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Physics Energy Exploration Project Energy can be stored in many forms as potential energy. It can be extracted through chemical and mechanical processes to get usable energy. We use that kinetic energy and electricity every day to power our lights‚ run our cars and do most of our tasks. Fossil Fuel is a non-renewable energy source. It results from the decomposition of dead and buried organisms. They are millions of years old and are fossilized under rock and sand. They are efficient energy producers
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is their difference in momentum? What is their difference in kinetic energy? 2. A 12 g bullet is fired horizontally into a 96 g wooden block initially at rest on a horizontal surface. After impact‚ the block slides 7.5 m before coming to rest. If the coefficient of kinetic friction between block and surface is 0.60‚ what was the speed of the bullet immediately before impact? You have to use the conservation of the total energy of the system to do this problem: Initially‚ you have‚ in the total
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KINETIC ENERGY Objects have energy because of their motion; this energy is called kinetic energy. Kinetic energy of the objects having mass m and velocity v can be calculated with the formula given below; K=1/2mv² Kinetic energy is a scalar quantity; it does not have a direction. Unlike velocity‚ acceleration‚ force‚ and momentum‚ the kinetic energy of an object is completely described by magnitude alone. Like work and potential energy‚ the standard metric unit of measurement for kinetic energy is
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First slide: The purpose of “Solar paint” invention is to generate inexpensive electricity because various efforts have been made for this kind of power generation over the previous few decades. It is an environment friendly technology which has eliminated the need of solar cell. It is completely reasonable and sustainable. Solar paint is consisted of organic solar cell paint. These organic solar cells are protected from water through ecofriendly synthetic sheets for example PET and therefore
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of the item. (c) (i) The energy on impact is calculated by using the following equations: Potential Energy (PE) = mass x gravity x height This gives the potential energy at the height when the ball is held at the start of the test. This can be used as a check to for the Kinetic energy (KE) equation as the law of energy conversation states that energy may neither be created nor destroyed. Therefore the sum of all the energies in the system is a constant. So the
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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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Renewable Energy in Cambodia I. Introduction Cambodia is a country in Southeastern Asia‚ bordering the Gulf of Thailand‚ between Thailand‚ Vietnam‚ and Laos. Cambodia is located surrounded by mountainous and highland areas in the periphery and flat like a stove in the central area. Cambodia is the country that full of the natural resources. The natural resources are classified in two categories are renewable resources and non-renewable resources‚ and natural resources can be converted
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