In an electric field, Gauss's law states
in cgs, where E is the electric field and q is the charge enclosed by the area integral,and
]
in MKS, where
is the permittivity of free space and 
is Coulomb's constant.
In a gravitational field,
where g is the gravitational acceleration, G is the gravitational constant, and m is the mass enclosed by the area integral.
(1)
in cgs, where E is the electric field and q is the charge enclosed by the area integral,and
(2)
]
(3)
in MKS, where
is the permittivity of free space and is Coulomb's constant.In a gravitational field,
(4)
where g is the gravitational acceleration, G is the gravitational constant, and m is the mass enclosed by the area integral.
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