a 4kg metal block absorbs 5000j of energy and increases to a temperature of 22°c. the metal has a specific heat capacity of 250j/kg°c. what was the original temperature of the block?

17 °C

Explanation:

From specific Heat capacity.

Q = cm (t₂-t₁) ... Equation 1

Where Q = Heat absorb by the metal block, c = specific heat capacity of the metal block, m = mass of the metal block, t₂ = final temperature, t₁ = Initial temperature.

make t₁ the subject of the equation

t₁ = t₂ - (Q/cm) ... Equation 2

Given: t₂ = 22 °C, Q = 5000 J, m = 4 kg, c = 250 J/kg.°c

Substitute into equation 2

t₁ = 22-[5000 / (4*250)

t₁ = 22 - (5000/1000)

t₁ = 22-5

t₁ = 17 °C