An inventor develops a stationary cycling device by which an individual, while p

Physics
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  1. An inventor develops a stationary cycling device by which an individual, while pedaling, can convert all of the energy expended into heat for warming water. How much mechanical energy is required to increase the temperature of 250 g of water (enough for 1 cup of coffee) from 19°C to 97°C? (1 cal = 4.186 J, the specific heat of water is 4 186 J/kg⋅°C)

    a.
    b.
    c.
    d.
    e.
Jun 28th, 2015

Thank you for the opportunity to help you with your question!

b.

20 J

is correct.................................................

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Jun 28th, 2015

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