The specific heat capacities of copper, lead, olive oil, and water are given in the table below:
| Substance | Specific heat capacity (J kg−1 ∘C−1J\text{ kg}^{-1}\text{ }^\circ\text{C}^{-1}J kg−1 ∘C−1) |
|---|---|
| copper | 390 |
| lead | 130 |
| olive oil | 2000 |
| water | 4200 |
2 kg of each metal is put into 5 kg of each liquid.
The starting temperature of each metal is 80∘C80^\circ\text{C}80∘C. The starting temperature of each liquid is 20∘C20^\circ\text{C}20∘C.
Which combination has the lowest final temperature at thermal equilibrium?
copper and olive oil
lead and olive oil
copper and water
lead and water
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.