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A piece of copper of mass 30g loses 60J of heat energy. If the specific...

Physics
WAEC 1997
A piece of copper of mass 30g loses 60J of heat energy. If the specific heat capacity of copper is 400J\(kg^{-1}K^{-1}\), Calculate the change in the temperature of the copper
  • A. 0.2K
  • B. 0.8K
  • C. 2K
  • D. 4.5K
  • E. 5K
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Correct Answer: Option E
Explanation
H=\(mc\Delta\theta \Rightarrow 60=0.03\times400\times\Delta\theta\\60= 12\Delta\theta therefore \Delta\theta=60/12 =5K\)
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