Balloons and Static Electricity

Instructions
This simulation shows how a balloon and sweater can become statically charged. Drag the balloon over the sweater to charge it.
[list=1][*]Can a balloon be "negatively charged" and still have positive charges on it?[/*][*]Why is the charged balloon attracted to the sweater?[/*][*]Why is the charged balloon attracted to the neutral wall?[/*][*]Why is the charged balloon "more" attracted to the sweater than the wall?[/*][/list]Credits:[br]PhET Interactive Simulations[br]University of Colorado Boulder[br]https://phet.colorado.edu

Information: Balloons and Static Electricity