Question

We can easily move our hand
in air but to do the same
through a solid block of wood
we need a karate expert.
​

Answer 1

Answer:We can easily move our hand in air but to do the same through a solid block of wood we need a karate expert. It is because the molecules of air has less force of attraction between them and a very small external force can separate them and pass through it.

Explanation:

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Answer 2

Ans: We can easily move our hand in air since the forces of attraction between  the particles of a gas are very weak and hence can be easily overcome for the  movement of the hand. In contrast, the particles of solid are closely packed and  hence the interparticle force of attraction are very strong. As a result, they  cannot be easily overcome for movement of the hand. In other words, we need a  karate expert with almost incredible power to separate these particles apart.

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