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Give reasons. We can easily move our ha...

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

Text Solution

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Particles of the air have large spaces between them. On the other hand, wood has little space between its particles. Also, it is rigid. For this reason, we can easily move our hands in the air, but to do the same through a solid block of wood, we need a karate expert.
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