H2P-679

Specific heat capacity

H2 Physics · JC 2 · Hard · Specific heat capacity

2.5\,\text{g}

steel ball at

22^{\circ}\text{C}

is dropped from a height of

40\,\text{m}

. Assume

8.0\%

of the loss in gravitational potential energy increases its internal energy and the volume change is negligible. The specific heat capacity of steel is

450\,\text{J kg}^{-1}\text{K}^{-1}

. Using

mgh

and

mc\Delta\theta

, find the temperature rise of the ball.

$7.0 \times 10^{-2}\,\text{K}$
$0.56\,\text{K}$
$7.0 \times 10^{-3}\,\text{K}$
$4.4 \times 10^{-2}\,\text{K}$

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