Fluids Question Preview (ID: 54140)


Static And Dynamic, Pressure, Density, Gauge Pressure, Buoyanc Bernoulli's Equation, Flow Rate. TEACHERS: click here for quick copy question ID numbers.

Ethanol (desnity 789kg/m3) flows in a pipe at a velocity of 1m/s and at a presssure of 101.3 kPa. How far must the pipe drop in height to achieve a pressure of 2 atm? Assume the pipe has a constant area.
a) 2.0 m
b) 13.1 m
c) 15.1 m
d) 3.1 m

A car driver measures a tire pressure of 220 kPa. What is the absolute pressure in the tire?
a) 321 kPa
b) 119 kPa
c) 101 kPa
d) 220 kPa

What is the difference between the pressure on the bottom of a pool and the pressure on the water surface?
a) Rho*g*h
b) Rho*g/h
c) gh/Rho
d) 0

What is the pressure caused by a force of 50 N on a square of wood with a length 6m and a width of 5m
a) 1.67 Pa
b) 3.21 Pa
c) 16.7 Pa
d) 23.1 Pa

Calculate the buoyant force of a sphere of radius 4m if it is completely submerged in water
a) 320000 N
b) 6500 N
c) 3200 N
d) 650000 N

Water enters a pipe with a velocity of 5m/s. If the pipe gets wider...
a) The velocity decreases
b) The velocity increases
c) The flow rate decreases
d) The flow rate increases

What does the buoyant force depend on?
a) Depth
b) Volume of the object
c) Density of the object
d) Density of the fluid

What are the units of flow rate?
a) m/s
b) kg m/s
c) kg /s
d) kg s/m2

Calculate the total pressure on a diver who is 32 m below the surface of the water.
a) 14.9 kPa
b) 256 kPa
c) 324.6 kPa
d) 414.9 kPa

Which of the following is a true statement?
a) The rate of fluid flow depends on the height of the pipe
b) A 3kg box will have a smaller buoyant force than a 1 kg box
c) A low density fluid will have a higher flow rate than a high density fluid.
d) None of the above

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