In these questions from 1 to 4, simply think how the energy in and out are balanced. Nothing else. Write them in the for
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In these questions from 1 to 4, simply think how the energy in and out are balanced. Nothing else. Write them in the for
questions from 1 to 4, simply think how the energy in and out are balanced. Nothing else. Write them in the form of an equation; A + B = C. 1. [4 Points] For a tea kettle on a hot electric stove element, record the forms of energy going into the system (the kettle). Equate this to the energy stored plus the energy flowing out of the system. 2. [4 Points] Write an expression (using words and not in numbers) for the efficiency of an auto mobile engine; be specific about what energy forms you are referring to. 3. [2 Point] The efficiency of a light bulb can be written as the ratio of what two quantities? 4. [4 Points] A home heated by the sun sees its indoor temperature rises from 15°C to 20°C on an early December Morning. Write down an equation illustrating the conversion of energy, starting with the solar radiation incident upon the outside of the house. 5. [16 Points] The table below examines the conversion processes in an internal combustion engine (ICE) and an electric vehicle (EV). For both power systems, complete the Table by filling the dashes and calculate the overall efficiencies. Example of automobile Automobile Power Units Raw fuel production Generation of electricity Transmission of electricity Battery Engine Mechanical Transmission system Ⓒ2006 Thomson Higher Education Gasoline ICE Step Overall Efficiency Efficiency 83% 83% 25% 70% 70% Electric Car Step Efficiency 96% 33% 90% 80% 90% 90% Overall Efficiency 96%
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