1. A patient is given sucrose intravenously. Her venous pressure is 18 mm Hg, and the elevation difference between the
intravenous needle and sucrose bottle is 0.80 m. If the rate of
sucrose flow is to be 2.0 mL/min, what should the diameter of
the 4.0-cm-long needle be? Assume the sucrose has the same
viscosity and density as blood.​

You want to move a heavy box with mass 30.0 kg across a carpeted floor. you pull hard on one of the edges of the box at an angle 30∘ above the horizontal with a force of magnitude 240 n, causing the box to move horizontally. the force of friction between the moving box and the floor has magnitude 41.5 n . what is the box's acceleration just after it begins to move