The experiment you described, where a balloon is rubbed against a surface and then against another balloon, is best demonstrating how objects with the same charge repel each other. When you rub the balloon against a surface, it becomes charged (usually negatively) due to the transfer of electrons. When two similarly charged balloons are brought close together, they repel each other, illustrating the principle of electrostatic force between like charges.
Look at the drawing of an experiment that requires rubbing a balloon against a surface and then against another balloon.
WALL
Which of the following best describes what the experiment is showing?
How a stationary object stops another object
How objects with the same charge repel each other
How helium works
How balloons
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