Quantity of heat Q = mass of iron x specific heat capacity of iron x change in temperature.
Q = mcδ\deltaδθ\thetaθ
m = 60g ⇒ 0.060, c = 460Jkg−1^{-1}−1k−1^{-1}−1 and δ\deltaδθ\thetaθ = 75 - 35 = 40ºC
Q = 0.060 x 460 x 40 = 1104J.
