When 90 KJ Is Removed from a 2-Kg Copper Bar $\circ$

question 58

Multiple Choice

When 90 kJ is removed from a 2-kg copper bar, its temperature drops from 200 ^$\circ$ C to 85 ^$\circ$ C.The specific heat of iron is

• A)0.16 kJ/kg.^\(\circ\)C.
• B)0.19 kJ/kg.^\(\circ\)C.
• C)0.23 kJ/kg.^\(\circ\)C.
• D)0.39 kJ/kg.^\(\circ\)C.

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