O-LevelPhysicsThermal Physics5054/22 · May/June 2017 · Q44 Marks
Fig. 4.1 shows apparatus used to measure the specific heat capacity of a metal. The electric heater is switched on and supplies 17000J of thermal energy (heat) to the block of metal. The temperature of the metal rises from 16°C to 38°C. The mass of the block of metal is 850 g. No energy is lost from the metal. [Figure 4.1]
- (a)Calculate the specific heat capacity of the metal.[2]
- (b)Calculate the heat capacity of the block of metal.[1]
- (c)Explain how thermal energy (heat) is conducted through the metal.[1]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (May/June 2017). The mark or mark type is shown in brackets.
- [1] (c=) E/mT or 17000/ (22 × 850)
- [1] 0.91 J/(g°C)
- [1] 765 - 774 J/°C
- [1] molecules colliding against molecules or movement / diffusion / collision of (free) electrons
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