Revision: Thermal Physics

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10 Thermal Physics - Revision Quiz

Test your understanding of Thermal Physics here:

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1) 2018 S4 EOY P1 Q20

Water of mass 0.87 kg at 90.0 ºC is poured into an insulated metal container of mass 0.50 kg at 20.0 ºC. The final temperature of the water is 86.2 ºC.
The specific heat capacity of water is 4200 J kg–1 K–1. Assume there is no energy loss to the surroundings.

What is the specific heat capacity of the metal used to make the container?

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2) A fixed mass of a material is heated at a constant rate from solid state until it reaches the gaseous state.

The graph below shows how its temperature varies with time.

In which state does the material have the smallest specific heat capacity?

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3) An ice cube, at a temperature of 0 ºC, has a mass of 10 g. The specific latent heat of fusion of water is 3.0 × 105 J/kg. How much heat energy is needed to convert the ice cube into 10 g of water at 0 ºC?

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4) Some gas is trapped in a closed container. The gas is cooled and the volume of the container is kept constant. What happens to the gas molecules?

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5) A 0.200 kW kettle containing boiling water is placed on a balance. It is left there and
continues to boil for 5.0 minutes. The balance reading changes by 0.200 kg. What does
this information give as a value for the specific latent heat of vaporisation of water?
A B 300 J/kg C 5.0 × 103 J/kg D 3.0 × 105 J/kg

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