What is the magnetic energy density in a volume where the magnetic field is $4.0 \mathrm{mT}$ ?
A) $3.2 \times 10^{-3} \mathrm{~J} / \mathrm{m}^{3}$
B) $13 \times 10^{-3} \mathrm{~J} / \mathrm{m}^{3}$
C) $6.4 \mathrm{~J} / \mathrm{m}^{3}$
D) $3.2 \mathrm{~J} / \mathrm{m}^{3}$
E) $13 \mathrm{~J} / \mathrm{m}^{3}$

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The Answer of  What is the magnetic energy density in a volume where the magnetic field is $4.0 \mathrm{mT}$ ?
A) $3.2 \times 10^{-3} \mathrm{~J} / \mathrm{m}^{3}$
B) $13 \times 10^{-3} \mathrm{~J} / \mathrm{m}^{3}$
C) $6.4 \mathrm{~J} / \mathrm{m}^{3}$
D) $3.2 \mathrm{~J} / \mathrm{m}^{3}$
E) $13 \mathrm{~J} / \mathrm{m}^{3}$

What Is the Magnetic Energy Density in a Volume Where 4.0mT4.0 \mathrm{mT}4.0mT

What Is the Magnetic Energy Density in a Volume Where $4.0 \mathrm{mT}$