internal energy

👨🏻‍🏫 學術台其他 - 科學

2009-11-04 7:25 am

Why hammering can increase the internal energy of a object?
Can you explain in the molecular level?

更新1:

Can you explain U (Internal Energy) = Q (Heat) + W (work done) in the case of 1 free falling 2 elastic spring 3 hammering What is positive and negative work done?

回答 (1)

天同

2009-11-05 1:28 am

✔ 最佳答案

Hammering produces heat by friction. The heat is absorbed by the object and becomes the internal energy.

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