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Study B.1.7—Thermal transfer direction conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

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This question is in two parts. Part 1 is about the motion of a ship. Part 2 is about melting ice.

The whole of the experiment in (f)(i) and (f)(ii) is repeated with a container of negligible mass that is not isolated from the surroundings. The temperature of the surroundings is $18^{\circ} \mathrm{C}$ . Comment on the final temperature of the water in (f)(ii).

ice/water spends more time below $18^{\circ} \mathrm{C}$ ;
so net energy transfer is in to the system;
so final water temperature is higher;
or
ice/water spends less time below $18^{\circ} \mathrm{C}$ ;
so net energy transfer is out of the system;
so final water temperature is lower;

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IB Physics SL B 1 7 Thermal Transfer Direction Topic Practice

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Question 1