A glass beaker contains a mass of 0.30 kg of water at a temperature of 15 ∘C15\text{ }^\circ\text{C}15 ∘C.
The specific heat capacity of water is 4200 J/(kg ∘C)4200\text{ J}/(\text{kg }^\circ\text{C})4200 J/(kg ∘C).
An iron block of mass 0.20 kg is at a temperature of 165 ∘C165\text{ }^\circ\text{C}165 ∘C. The block is carefully lowered into the beaker of water.
The final temperature of both the water and iron is 25 ∘C25\text{ }^\circ\text{C}25 ∘C.
What is the specific heat capacity of the iron?
(Assume that no water is lost and no thermal energy has been transferred to the beaker or the surroundings.)
380 J/(kg ∘C)380\text{ J}/(\text{kg }^\circ\text{C})380 J/(kg ∘C)
450 J/(kg ∘C)450\text{ J}/(\text{kg }^\circ\text{C})450 J/(kg ∘C)
900 J/(kg ∘C)900\text{ J}/(\text{kg }^\circ\text{C})900 J/(kg ∘C)
6300 J/(kg ∘C)6300\text{ J}/(\text{kg }^\circ\text{C})6300 J/(kg ∘C)
119 exam-style questions on CIE IGCSE Physics 2.2.2a Internal energy and temperature. Each one has a worked solution and a mark scheme showing where the marks go.