Question:

What is the initial and final energy used for the following?

by  |  earlier

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a flashlight ..driving a car ...a candle ... and a campfire

for example:

a solar-powered calculator would be

source: light → final: electrical

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2 ANSWERS


  1. flashliight: electro-chemical (battery) --> light, heat

    car: thermo-chemical (gas) --> electronic, light, heat, kinetic motion

    candle: thermo-chemical (fat/wax) --> light, heat

    campfires: thermochemical (bio-molecules) --> light, heat


  2. the other bill has it mostly correct.

    but the final energy is always heat.

    car: thermo-chemical (gas) --> electronic, light, heat, kinetic motion -> heat

    calculator light -> electrical -> heat

    .

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