Why Does a Hollow Sphere Cool Faster Than a Solid Sphere?

Thread starter Amith2006
Start date May 26, 2006
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Comparison Cooling Rate

AI Thread Summary

A hollow sphere cools faster than a solid sphere primarily due to its lower mass and heat capacity, which allows it to lose heat more quickly. The rate of heat loss is influenced by the thickness of the material, with thinner walls facilitating faster cooling. Additionally, the density differences between the two types of spheres affect their specific heat capacities, further contributing to the cooling rate. The combination of these factors explains why a hollow sphere dissipates heat more efficiently than a solid sphere. Understanding these principles is essential in thermodynamics and material science.

May 26, 2006

Amith2006

Sir,
It is said that a hollow sphere cools faster that a solid sphere. Is it because a hollow sphere contains smaller quantity of heat than the solid sphere? Or is it because the rate of heat loss is inversely proportional to thickness of the conductor through which heat is lost?

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May 26, 2006

Hootenanny

Staff Emeritus

Science Advisor

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Consider the density of a solid sphere, compared to a hollow sphere; and hence compare the specific heat capacity of the two spheres.

~H

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