11) Seawater contains approximately 3.5% salt by weight, what is the of the seawater containing 3 kg of salt if the density of the seawater is equal to 1030kg/cm³

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!