An object has a weight of 4 N in air, 3 N in water and 2.8 N in a salt solution. If the density of water is 1000 kg m-3, the density of the salt solution isA. 830 kg m-3B. 1070 kg m-3C. 1200 kg m-3D. 1430 kg m-3SolutionShow solution >> The answer is C.This is a problem that requires the application of Archimedes’ principle. The object has a weight of 4 N in air. Because the upthrust on the object