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10x-06 Balloon Balance

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    During a lightening storm, mass electric fields can build up between the ground and the earth.
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    Let's say that in one particular lightening storm, you have an electric field
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    of 10,000 N/C pointing downwards.
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    Let's say you want to take advantage of this electric field
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    by taking an air-filled balloon that you've recently inflated--
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    that's a balloon, by the way--
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    and rubbing it on your head, because rubbing a balloon on your head
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    actually causes the rubber of the balloon to strip electrons away from your hair
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    and give the balloon a negative charge.
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    By doing this, you're hoping that you can take your balloon and have it suspend itself
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    inside this region of electric fields in such a way that the weight of the balloon downwards
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    is exactly the balanced by an electric force upwards.
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    If we know that the weight of the balloon--or I should say the mass of the balloon--
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    is 30 g, how much charge must you put on the balloon to have it balance perfeclty
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    in this electric field? Enter your answer here in Coulombs.
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    I've set this up in scientific notation,
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    so you can enter your exponent here and the base part of your number here.
Tytuł:
10x-06 Balloon Balance
Video Language:
English
Team:
Udacity
Projekt:
PH100 - Intro to Physics
Duration:
01:06
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