State what can be inferred from the temperature difference between two objects.
State the underlying principle on which temperature measurement is based.
Using your response in (a)(ii), explain why two thermometers may show different temperature readings for the same object.
A block of aluminium with mass $670\,\text{g}$ is heated at a constant power of $95\,\text{W}$ for $6.0\,\text{minutes}$. The specific heat capacity of aluminium is $910\,\text{J kg}^{-1}\text{K}^{-1}$. The block starts at $24\,^{\circ}\text{C}$. Assuming that no thermal energy is lost to the surroundings, show that the final temperature of the block is $80\,^{\circ}\text{C}$.
A block of aluminium with mass $670\,\text{g}$ is heated at a constant power of $95\,\text{W}$ for $6.0\,\text{minutes}$. The specific heat capacity of aluminium is $910\,\text{J kg}^{-1}\text{K}^{-1}$. The block starts at $24\,^{\circ}\text{C}$.
In practice, some energy is transferred to the surroundings. The actual variation with time $t$ of the block temperature $\theta$ is shown in Fig. 1.1. Using the information in (i), draw on Fig. 1.1 a line to represent the block temperature if there were no energy losses to the surroundings.
Using Fig. 1.1, calculate the total energy lost to the surroundings during the heating process.