jow If the insulating material in a wall is modified so that the /?-value is inc

Question

jow If the insulating material in a wall is modified so that the /?-value is increased by 50%, how will the rate of energy transferred by conduction through the wall be affected? It will increase by 50%. It will decrease by 50%. It will increase by more than 50%. It will decrease by more than 50%. Two objects made from the same material have different masses and different initial temperatures as shown. If the bodies are placed in thermal contact, the final equilibrium temperature is most nearly: 27 degree C 33 degree C 40 degree C 47 degree C None of the above Cannot be determined

Explanation / Answer

2nd problem solution is option 1. 27oC

Since the objects are made of the same material, the only difference between them is their mass. Clearly, the object with less mass will be much easier to change temperature since there is not much material there (compared to the more massive object)

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