A key is placed in a hot oven and warmed to 100c. What is the result?
Thermal expansion is a property of the material according to which the dimensions of the metal increase when the metal is heated. Similarly, the dimensions of the metal reduces when it is cooling down.
Answer and Explanation:
As when the metal is heated, there is an expansion of the metal. Similarly, when the key is placed in the hot oven and heated, the key will expand.
So, when a key is heated in an oven, the size of the hole of the key increases.
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Learn more about this topic:
from High School Physics: Help and ReviewChapter 17 / Lesson 12