15 kJ of heat is given to 0.40 kg of aluminium, 0.40 kg of iron and 0.40 kg of copper…

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$15\ \text{kJ}$ of heat is given to $0.40\ \text{kg}$ of aluminium, $0.40\ \text{kg}$ of iron and $0.40\ \text{kg}$ of copper. Find the rise in temperature of each. (Aluminium $900\ \text{J kg}^{-1}\text{K}^{-1}$ , iron $450\ \text{J kg}^{-1}\text{K}^{-1}$ , copper $385\ \text{J kg}^{-1}\text{K}^{-1}$ .)

Need a reminder? The key ideaShow

Heat to warm a body: $Q = mc\,\Delta T$ . Water $4186\ \text{J kg}^{-1}\text{K}^{-1}$ , ice $2100\ \text{J kg}^{-1}\text{K}^{-1}$ , aluminium $900\ \text{J kg}^{-1}\text{K}^{-1}$ , iron $450\ \text{J kg}^{-1}\text{K}^{-1}$ , copper $385\ \text{J kg}^{-1}\text{K}^{-1}$ . Heat capacity of a body $= mc$ .

The worked solution

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