How much heat is absorbed when a block of copper of mass 0.05kg and specific...
PHYSICS
JAMB 1992
How much heat is absorbed when a block of copper of mass 0.05kg and specific heat capacity 390Jkg-1K-1 is heated from 20oC to 70oC?
- A. 39 . 98 x 10-1J
- B. 9.75 x 102J
- C. 3.98 x 103J
- D. 9.75 x 103J
Correct Answer: B. 9.75 x 102J
Explanation
Q = mc\(\theta\)
= 0.05 x 390 x (70 - 20)
= 975J
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