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jeka57 [31]
3 years ago
7

A copper sphere was moving at 25 m/s when it hit another object. This caused all of the KE to be converted into thermal energy f

or the copper sphere. If the specific heat capacity of copper is 387 J/(kg ⋅ C°), what was the increase in temperature?
0.23 C°
0.81 C°
1.3 C°
2.1 C°
Physics
1 answer:
Verdich [7]3 years ago
3 0

Answer:

\Delta T = 0.81 ^oC

Explanation:

As we know by energy conservation

All its kinetic energy will convert into thermal energy to raise its temperature

\frac{1}{2}mv^2 = ms\Delta T

now divide both sides by mass of the object

\frac{1}{2}v^2 = s\Delta T

so change in temperature is given as

\Delta T = \frac{v^2}{2s}

\Delta T = \frac{25^2}{2\times 387}

\Delta T = 0.81^oC

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