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OpenStudy (anonymous):
How much energy is stored in a room 3.0m by 4.0m by 2.4m due to the earths magnetic field with a strength of 5.0*10^-5 T?
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OpenStudy (vincent-lyon.fr):
Do you know the expression of the magnetic energy density?
OpenStudy (anonymous):
u=B^2/2u?
OpenStudy (vincent-lyon.fr):
Yep! That's it. Now you just have to multiply it by the volume of your room.
OpenStudy (anonymous):
Thank you!
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