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physics doubt

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mmanikandan:
hello sir

this is manikandan and i have a doubt in physics.....please help me out



25.When you whistle out air, on to your palm held close to your mouth the air fills cold but, when you blow out air from your mouth keeping it wide open the air feels hot why?

elemis:
Consider this your final warning. I will have you banned if you attempt to make another duplicate thread.

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