A metal bar weighing 400 g is heated at 5 ° C. Determine the specific heat of the metal if 760 J

A metal bar weighing 400 g is heated at 5 ° C. Determine the specific heat of the metal if 760 J of heat was spent on heating.

Initial data: m (weight of a metal bar) = 400 g; Δt (change in temperature of a given metal bar) = 5 ºС; Q (the amount of heat that was spent on heating the bar) = 760 J.

SI system: m = 400 g = 0.4 kg.

We express the specific heat capacity of the metal from which this bar was made from the formula: Q = C * m * Δt and C = Q / (m * Δt).

Let’s calculate: C = 760 / (0.4 * 5) = 380 J / (kg * K).

Answer: The bar was made of metal with a specific heat capacity of 380 J / (kg * K).