Post-UTME English Language 2010 Objective — Question 12
Question 12 of 30 from the Post-UTME Screening (Post-UTME) English Language 2010 Objective paper, with the correct answer and a full explanation.
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Determine the quantity of heat in joules given out when a piece of iron of mass 40g and specific heat capacity 460J/kg degC cools from 70 degrees C to 40 degrees C.
- A. 552JCorrect
- B. 736J
- C. 1288J
- D. 368.1J
Explanation
Heat = mc(delta-T) = 0.040 x 460 x 30 = 552J.
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