2013 Semifinal Exam Part A 5 Question A4 A graduated cylinder is partially filled with water;a rubber duck floats at the surface.Oil is poured into the graduated cylinder at a slow,constant rate,and the volume marks corresponding to the surface of the water and the surface of the oil are recorded as a function of time. 500 111111111 x Volume mark at water surface 450 o Volume mark at oil surface 400 350 300 0 250 0 200 150 100 50 0 1 2 3 456 78 910 Time(min） Water has a density of 1.00 g/mL;the density of air is negligible,as are surface effects.Find the density of the oil. Copyright C2013 American Association of Physics Teachers2013 Semifinal Exam Part A 5 Question A4 A graduated cylinder is partially filled with water; a rubber duck floats at the surface. Oil is poured into the graduated cylinder at a slow, constant rate, and the volume marks corresponding to the surface of the water and the surface of the oil are recorded as a function of time. 0 1 2 3 4 5 6 7 8 9 10 0 50 100 150 200 250 300 350 400 450 500 Time (min) Volume (mL) Volume mark at water surface Volume mark at oil surface Water has a density of 1.00 g/mL; the density of air is negligible, as are surface effects. Find the density of the oil. Copyright c 2013 American Association of Physics Teachers