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Article #977balloon question
From: Steve Luzader
Date: Fri, 10 Feb 1995 03:01
Date: Fri, 10 Feb 1995 03:01
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The pressure inside a balloon is greater than atmospheric pressure because the total force on the gas inside the balloon is that due to the external air pressure plus the force due to the stretched rubber membrane of the balloon itself. Because of the membrane, the inward force on the gas in the balloon is greater than that due to the external air alone. This is a good place to appeal to the experimental side of physics, too. What happens when a balloon is punctured? Does it just sit there and quietly collapse, or is there an outward rush of air from _inside_ the balloon? We should always encourage our students (and ourselves) to make observations! Steve Luzader Frostburg State University sluzader@fre.fsu.umd.edu
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 16cfd8,3d4443fc7686a50b,start X-Google-Attributes: gid16cfd8,public X-Google-ArrivalTime: 1995-02-09 19:01:51 PST Path: arc1-ca.pugleaf.net!nntp.gmd.de!stern.fokus.gmd.de!ceres.fokus.gmd.de!zib-berlin.de!news.belwue.de!news.rz.uni-ulm.de!rz.uni-karlsruhe.de!news.uni-stuttgart.de!news.rhrz.uni-bonn.de!news.rwth-aachen.de!news.dfn.de!gina.zfn.uni-bremen.de!informatik.uni-bremen.de!nordwest.pop.de!news.hamburg.pop.de!easix!uunet!gatech!paladin.american.edu!auvm!FRE.FSU.UMD.EDU!e2ppluz Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU Newsgroups: bit.listserv.physhare Message-ID: <0098BBF1.35274C20.1340@fre.fsu.umd.edu> Date: Thu, 9 Feb 1995 22:01:51 EST Sender: Sharing resources for high school physics <PHYSHARE@PSUVM.PSU.EDU> From: Steve Luzader <e2ppluz@FRE.FSU.UMD.EDU> Subject: balloon question Lines: 13