Suppose you warm up 520 grams of water (about half a liter, or about a pint) on a stove, and while this is happening, you also stir the water with a beater, doing 5multiply. gif104 J of work on the water. After the large-scale motion of the water has dissipated away, the temperature of the water is observed to have risen from 21°C to 84°C.
What was the change in the thermal energy of the water?
deltacapEthermal =?
Taking the water as the system, how much energy transfer due to a temperature difference (microscopic work) Q was there across the system boundary?
Q = ?
Taking the water as the system, what was the energy change of the surroundings?
deltacapEsurroundings=?
Answers: 1
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