Question

We easily move our hand in air but to move hand in table we need a karate expert.

Tell in simple language with proper explanation.

Answer 1

we know that in air molecules are very far from each other so less force is needed to move our hand because mass of molecules is negligible as compare to our hand .

But in case of table molecules are very close to each other so more force is needed to separate the molecules that's why we need karate player.

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Answer 2

<> The particles of air have least amount of attraction between them.

<> In air , a lot of space is empty between the particles.

<> So ,one can easily move the hand air and push the particles of air apart.

<> On the other hand , the particles of solid have maximum amount of attraction between them.

<> The particles of solid are very close to each other. There is a less amount of space between them.

<> Hence , more amount of force is required to move the particles of solid apart.


<> Therefore ,we can move our hand easily in air but to move hand in table we need a karate expert.