Part A A 110-cm-thick layer of oil floats on a 120-cm-thick layer of water. What is the pressure at the bottom of the water layer? Express your answer with the appropriate units. > View Available Hint(s) HA ? ps Value Units Submit Request AnswerPart A A 10-cm-diameter, 30.0-cm-tall steel cylinder (Psteel = 7900 kg/m ) floats in mercury. The What length of steel is above the surface? axis of the cylinder is perpendicular to the surface. Express your answer with the appropriate units. View Available Hint(s) ? Value Units Submit Request AnswerPart A You and your friends are playing in the swimming pool with a 64-cm-diameter beach ball. How much force would be needed to push the ball completely under water? Express your answer with the appropriate units. HA ? F = Value Units Submit Request AnswerThe 70 kg student in (Figure 1) balances a 1100 kg elephant on a hydraulic lift. Part A For help with math skills, you may want to review: Rearrangement of Equations Involving Multiplication and Division What is the diameter of the piston the student is standing on? Express your answer with the appropriate units. Figure View Available Hint(s) LA ? d = Value Units Submit Request Answer 2.0 m OilThe 70 kg student in (Figure 1) balances a 1100 kg Revie elephant on a hydraulic lift. Part B For help with math skills, you may want to review: Rearrangement of Equations Involving Multiplication and Division When a second student joins the first, the height difference between the liquid levels in the right and left pistons is 40 cm. What is the second student's mass? Figure