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A solid of mass 0.5kg initially at 50oC melts at 60oC. Calculate the quantity of...

Physics
WAEC 2010
A solid of mass 0.5kg initially at 50oC melts at 60oC. Calculate the quantity of heat required to melt it completely. [specific heat capacity of the solid =2.0KJ kg-1K-1][Specific latent heat of fusion of solid =1.0 KJ kg-1]
  • A. 1500J
  • B. 10000J
  • C. 10500J
  • D. 15000J
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Correct Answer: Option C
Explanation
Q = ML + C\(\theta\)

= 0.5 x 1000 + 0.5 x 2000 x 10

= 10500
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