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Sagot :

Answer:

Q = 146.25  J

Explanation:

Given that,

The mass of 10 copper pennis = 25 grams

It warm up from 23°C to 38°C.

The specific heat capacity of copper is 0.39 J/g°C

We need to find the energy absorbed by the pennies. The expression for the energy absorbed is given by :

[tex]Q=mc\Delta T\\\\Q=25\times 0.39\times (38-23)\\\\Q=146.25\ J[/tex]

So, 146.25  J of energy is absorbed by the pennies. Hence, this is the required solution.

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