Which requires more energy
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Which requires more energy

[From: ] [author: ] [Date: 11-10-09] [Hit: ]
since Q of water = mCΔt Q of aluminium = mCΔt 500x4.186x5 1000x0.......
Which requires more energy, increasing the temperature of a 1 kg block of aluminum by 20º C or raising the temperature of 500g of water by 5º C?

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Specific heat capacity of water is 4.186J/g K while for aluminium it is 0.900 J/g K.

since Q of water = mCΔt Q of aluminium = mCΔt
500x4.186x5 1000x0.9x20
10456J 18000J
therefore:
it requires more energy to raise the temperature of aluminium
1
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