1 votes

How much heat must be supplied to reach 15.5 ° C (at 1 atm)

A container contains 10 g of water at a temperature of 14.5 ° C, if 33.46 J is supplied by rotating blades

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Anon User Points 0
They are asking you to calculate with the so-called mechanical equivalent of Heat. [http://www2.montes.upm.es/dptos/digfa/cfisica/termo1p/joule.html[(http://www2.montes.upm.es/dptos/digfa/cfisica/termo1p/joule.html) Notice that this is Joule's famous experience ... according to which: 1 cal = 4.18 Joules For your problem ............... 4.18 / 1 = 33.46 / X ... .... X (cal) = 33.46 / 4.18 = 8 cal.

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