Imagine people breathing on the length of a 40 , 000 − km -long steel pipe that forms a ring to smoothly fit snugly entirely around the circumference of Earth so as to raise its temperature by 1 ° C . The pipe gets longer and is no longer snug. Show that it then stands an astounding 70 m above ground level! (To simplify, consider only the expansion of the pipe’s radial distance from Earth’s center, Earth’s radius, which is 6370 km .)
Imagine people breathing on the length of a 40 , 000 − km -long steel pipe that forms a ring to smoothly fit snugly entirely around the circumference of Earth so as to raise its temperature by 1 ° C . The pipe gets longer and is no longer snug. Show that it then stands an astounding 70 m above ground level! (To simplify, consider only the expansion of the pipe’s radial distance from Earth’s center, Earth’s radius, which is 6370 km .)
Imagine people breathing on the length of a
40
,
000
−
km
-long steel pipe that forms a ring to smoothly fit snugly entirely around the circumference of Earth so as to raise its temperature by
1
°
C
. The pipe gets longer and is no longer snug. Show that it then stands an astounding
70
m
above ground level! (To simplify, consider only the expansion of the pipe’s radial distance from Earth’s center, Earth’s radius, which is
6370
km
.)
Consider a 40,000 km steel pipe in the shape of a ring that fits snuggly all around the circumference of the Earth. We are heating now the ring so its temperature increased by 1 degree C. Now, the pipe will no longer be snug. How high the ring will now stand above ground level? (Make as many simplifications as necessary). Data: Coefficient of linear expansion for steel is 11*10-6 /degree C. This means, for example, that a 1-meter bar of steel that increases its temperature by 1 degree C will expand 11*10-6 meters (11 micrometers)
Imagine a 40,000-km steel pipe that forms a ring to fit snugly entirely around the circumference of Earth. Suppose that people along its length breathe on it so as to raise its temperature by 1°C. The pipe gets longer—and is also no longer snug. How high does it stand above ground level? Show that the answer is an astounding 70 m higher! (To simplify, consider only the expansion of its radial distance from the center of Earth, and apply the geometry formula that relates circumference
Imagine that you could survive in space without a suit. We model the human body as a sphere of diameter 1m and temperature 37◦C. How long would your body take to radiate the recommended daily energy intake of 8700kJ?
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The Laws of Thermodynamics, Entropy, and Gibbs Free Energy; Author: Professor Dave Explains;https://www.youtube.com/watch?v=8N1BxHgsoOw;License: Standard YouTube License, CC-BY