Physics, 06.11.2020 16:40 kparker7543
• When you push a piece of chalk across a chalkboard, it sometimes screeches because it rapidly alternates between slipping and sticking to the board. Describe this process in more detail, in particular explaining how it is related to the fact that kinetic friction is less than static friction
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• When you push a piece of chalk across a chalkboard, it sometimes screeches because it rapidly alte...
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