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23 Nov 2019
<p>A 200-mL beaker that is half-filled with water is on the left pan of balance, and a sufficient amount of sand is placed on the right pan to bring the balance to equilibrium. A cube 4.0cm on an edge that is attached to a string is then lowered into the water until the cube is completely submerged, but not touching the bottom of the beaker. A piece of brass of mass <em>m</em> is then added to the right pan to restore equilibrium. What is <em>m</em>?</p>
<p>A 200-mL beaker that is half-filled with water is on the left pan of balance, and a sufficient amount of sand is placed on the right pan to bring the balance to equilibrium. A cube 4.0cm on an edge that is attached to a string is then lowered into the water until the cube is completely submerged, but not touching the bottom of the beaker. A piece of brass of mass <em>m</em> is then added to the right pan to restore equilibrium. What is <em>m</em>?</p>
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Elin HesselLv2
17 Sep 2019