Question

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.

Answer 1

Intermolecular spaces in air is very low and it is invisible.but in case of wood intermolecular spaces is very high and it's hard to break.

Answer 2

because the density of solid is more than air and karate experts are well trained for this .

hope this helps you and please mark my answer as brainlist