Question

When you write on a piece of glass sheet with a piece of chalk, the writing is not clear. Explain. Why is it difficult to walk on wet marble floor?​

Answer 1

Answer:

The glass sheet is a smooth surface. The friction that a piece of chalk faces on a glass sheet is much lesser than what it may face when used to write on a board. Hence, the writing is not clear in the case of a glass sheet when used as a writing surface.

Explanation:

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Answer 2

Answer:

bcz of the water the friction decreases

Explanation:

when we try to walk on a wet marble floor it is found difficult because friction decreases on the smooth surface and hence we are unable to walk properly