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We write an equation for the forces acting on a hydrometer for three cases:

We write an equation for the forces acting on a hydrometer for three cases: 1. floating freely in a liquid of density ρ L at reference temperature T0 ,

We write an equation for the forces acting on a hydrometer for three cases: 1. floating freely in a liquid of density ρ L at reference temperature T0 , 2. suspended from a balance in air, and

We write an equation for the forces acting on a hydrometer for three cases: 1. floating freely in a liquid of density ρ L at reference temperature T0 , 2. suspended from a balance in air, and 3. suspended from a balance while immersed to the identical level as in Case 1, but in a

We write an equation for the forces acting on a hydrometer for three cases: 1. floating freely in a liquid of density ρ L at reference temperature T0 , 2. suspended from a balance in air, and 3. suspended from a balance while immersed to the identical level as in Case 1, but in a liquid of known density ρ T at temperature TT . (Tridecane is the liquid of known

We write an equation for the forces acting on a hydrometer for three cases: 1. floating freely in a liquid of density ρ L at reference temperature T0 , 2. suspended from a balance in air, and 3. suspended from a balance while immersed to the identical level as in Case 1, but in a liquid of known density ρ T at temperature TT . (Tridecane is the liquid of known density, hence the subscript “T”.) Note that TT need not be equal to the hydrometer

We write an equation for the forces acting on a hydrometer for three cases: 1. floating freely in a liquid of density ρ L at reference temperature T0 , 2. suspended from a balance in air, and 3. suspended from a balance while immersed to the identical level as in Case 1, but in a liquid of known density ρ T at temperature TT . (Tridecane is the liquid of known density, hence the subscript “T”.) Note that TT need not be equal to the hydrometer reference temperatureT0 .

We write an equation for the forces acting on a hydrometer for three cases: 1. floating freely in a liquid of density ρ L at reference temperature T0 , 2. suspended from a balance in air, and 3. suspended from a balance while immersed to the identical level as in Case 1, but in a liquid of known density ρ T at temperature TT . (Tridecane is the liquid of known density, hence the subscript “T”.) Note that TT need not be equal to the hydrometer reference temperatureT0 . Solving the three equations simultaneously yields the data reduction eq