Thermal Physics Question

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    The question states;

    A student uses a microwave oven to warm up a cup of cold tea.

    Thermal energy is supplied to the tea at a rate of 750 W. The tea has a mass of 0.42 kg and an initial temperature of 17 degrees C. Calculate the final temperature of the tea. Assume the specific heat capacity of the tea is 4200 J kg-1 K-1.

    I understand how to calculate the final temperature, but first I have to change the 750 Watts into joules, however, the question gives no time which I can use for the equation Q = Power x time.

    Am I missing something obvious here, or has the question been printed incorrectly?

    Thanks.
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    Must be printed incorrectly, can't see any way around it
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    Agree. Someone forgot to tell you how long the thing's being heated for.
 
 
 
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Updated: October 12, 2016
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