PH-2219

Specific heat capacity

Physics · Secondary 4 · Hard · Specific heat capacity

A 0.40 kg metal block at 90 °C is placed in 0.80 kg of water at 20 °C in an insulated container. They reach a final temperature of 30 °C. The specific heat capacity of water is

4200\,\text{J kg}^{-1}\,^{\circ}\text{C}^{-1}

and of the metal is

500\,\text{J kg}^{-1}\,^{\circ}\text{C}^{-1}

.

What is the heat gained by the water?

$3.36\times10^4\,\text{J}$
$4.20\times10^3\,\text{J}$
$1.68\times10^4\,\text{J}$
$8.40\times10^4\,\text{J}$

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