Asked by Anonymous
After rubbing a balloon against someone's hair, a balloon has accumulated a static electric charge. The air inside the balloon has the same density as the air outside of the balloon, and the balloon itself
weighs 1.41mN. How many free electrons are there on the surface of the balloon if an electric field of magnitude 4.97x10^11N/C is required to keep the balloon floating at a constant height?
weighs 1.41mN. How many free electrons are there on the surface of the balloon if an electric field of magnitude 4.97x10^11N/C is required to keep the balloon floating at a constant height?
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