1wen u pass a gas.suddenly thru a narow opening of ur mouth .. the temperture... falls drastically..as the volume sudenly increases...with other factors remaining constant...thus blowing cool air......but this doesnot occur..wen blown gently..
Why can you warm your hands by blowing gently, and cool your hands by blowing hard?
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8 Answers
1in case 1, mouth should be kept wide open
whil in case 2 very less space should be left for air to cum out..
49though it is 9-10 probblem still i think the explanation is adiabatic expansion in second case.
62to be true it is a biology questoin ;)
If i remember correctly what i read ;) :D
49biology?? [125] kaise??
mujhe to ab tak lagta hai thats a q of adiabatic expansion....[1]
149yes that is what i mean by adiabatic expansion???isnt it???
but nishant bhaiya posted it in 9 - 10 forum....and he also insists its a biology quest...so wat possibly can the ans be'???
49and remember it is tru when u pass gas through a narrow opening....of ur..................................mouth only nothing else.....mind it...[3][3][3]
49neways the name of the opic reminds me of hamlet...to warm or not to warm....
like to be or not to be...[3][3]