A. A cylindrical disk of wood weighing 50.0 [N] and having a diameter of D = 20.0 [cm] floats on a liquid of density p = 0.850 [g/cm³]. The cylinder of liquid is h = 50.0 [cm] high and has a diameter that is the same as that of the wood. What is the gauge pressure halfway down the liquid? h

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter15: Fluid Mechanics
Section: Chapter Questions
Problem 20P: A tank with a flat bottom of area A and vertical sides is filled to a depth h with water. The...
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2. My neck, my back (Likido)
A.
A cylindrical disk of wood weighing 50.0 [N] and having a diameter of D =
20.0 [cm] floats on a liquid of density p = 0.850 [g/cm³]. The cylinder of liquid is h =
50.0 [cm] high and has a diameter that is the same as that of the wood. What is the
gauge pressure halfway down the liquid?
h
B.
For your science exhibit, you want to make a block of wood float at the
interface between a layer of oil of unknown density Poil, and water (Pwater =
1000 [kg/m³]) inside a container as shown. The density of the wood is Pwood =
950. [kg/m³]. What must be the density of the oil so that only 40.0% of the wood is
submerged in water?
C.
Water (Pwater = 1000. [kg/m³]) is flowing through a
bent cylindrical pipeline shown. The radii of the pipe at points
1 and 2 are 0.300 [m] and 1.00 [m], respectively. The volume
flow rate through the pipeline is 3.50 [L/s]. If the pressure at
point 1 in the pipe is 350 [kPa], what is the pressure at point
2, located 5.00 [m] above point 1?
1
2
wood
Liquid
D
Oil
wood
water
5.00 [m]
Transcribed Image Text:2. My neck, my back (Likido) A. A cylindrical disk of wood weighing 50.0 [N] and having a diameter of D = 20.0 [cm] floats on a liquid of density p = 0.850 [g/cm³]. The cylinder of liquid is h = 50.0 [cm] high and has a diameter that is the same as that of the wood. What is the gauge pressure halfway down the liquid? h B. For your science exhibit, you want to make a block of wood float at the interface between a layer of oil of unknown density Poil, and water (Pwater = 1000 [kg/m³]) inside a container as shown. The density of the wood is Pwood = 950. [kg/m³]. What must be the density of the oil so that only 40.0% of the wood is submerged in water? C. Water (Pwater = 1000. [kg/m³]) is flowing through a bent cylindrical pipeline shown. The radii of the pipe at points 1 and 2 are 0.300 [m] and 1.00 [m], respectively. The volume flow rate through the pipeline is 3.50 [L/s]. If the pressure at point 1 in the pipe is 350 [kPa], what is the pressure at point 2, located 5.00 [m] above point 1? 1 2 wood Liquid D Oil wood water 5.00 [m]
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