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Q: What is the liquid density of Gasoline as a fuel?

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Q: A certain gasoline weighs 46.5lb/ft³. What are its density, specific volume and specific gravity?

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Q: A diesel engine required 9,800 kJ of heat to produce 1,800 kJ of power. What is its efficiency?

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Landfills

The landfill is a site used for the disposal of waste materials. The landfill is a solid waste facility that is often known as a dumping ground. The image below shows a landfill site in Hawaii. Landfilling is the most ancient and common method used for the disposal of waste. For the landfill, a deep trench is constructed in an isolated place away from the city. The trench for landfills is designed properly after analyzing the total population and the waste generation per capita. The waste is dumped into the trench and after every layer of waste, a layer of soil is spread on the top of it.