How much heat is given out when a piece of iron of mass 50g and…

Physics WAEC 1990

How much heat is given out when a piece of iron of mass 50g and specific heat capacity 460 Jkg-1k-1 cools from 85oC to 25oC?

  • 1.38 x 106 J
  • 2.53x104J
  • 7.66x103J
  • 1.38x103J checkmark
  • 1.27 X103J

The correct answer is: D

Explanation

Q = mcΔθ = 0.050 x 460 x (85 - 25) = 1.38x103J
Previous Question Next Question

Leave A Comment