Scaling
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31. Scaling. Conceptual Physics Text Correlation: Section 18.5. Where cold weather persists, why are apartment buildings block-shaped?.

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Scaling

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Scaling

31

Scaling

Conceptual Physics

Text Correlation: Section 18.5


Question 1

Where cold weather persists, why are apartment buildings block-shaped?

Answer: The less surface area per volume, the less heat escapes and the less heating fuel consumed. Like the 3 x 3 and 4 x 4 blocks in the transparency, inner regions present no surface for heat loss.

Question 1

  • A group of cubical blocks that make a larger cube has less surface area than any other shape made with cubical blocks.


Question 2

What would be the ratio of surface area/volume for a 5 x 5 block cube?

Answer: (25 x 6)/125 = 6/5.

Question 2


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