
T2 Fluid dynamics exercises
Presentation
•
Physics
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8th Grade
•
Practice Problem
•
Medium
Liliana Carrillo
Used 15+ times
FREE Resource
9 Slides • 10 Questions
1
by Liliana BC
2
Fluid dynamics is "the branch of applied science that is concerned with the movement of liquids and gases"
3
Laminar
Turbulent
Transitional
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5
Multiple Choice
What kind of flow shows a line pattern when the fluid moves?
Turbulent
Laminar
Both
None of them
6
Multiple Choice
A high Reynold's number means laminar flow
True
False
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8
9
10
11
12
Multiple Choice
This is the unit to measure Pressure
Newton
Pascal
cubic meter
square meter
13
Multiple Choice
A Pascal is equal to a
m3kg
N m
m2N
kg s2m
14
Multiple Choice
Density is measured in
Newtons
Pascals
m3kg
Cubic meters
15
Multiple Choice
Water flows through a circular tube which transverse section has a diameter of 0.3 m. What speed will the water have inside the tube if the flow is 1.20 m3/s?
17.14 m/s
1.2m3/s
17.14 m2/s
0.07m2
16
Multiple Choice
Water runs through a plumbing with a flow of 0.750m3/s and arrives to every exit of a fountain. At what speed will the water come out of the holes if these have a diameter of 40mm? At what speed would the water come out if the diameter is 120 mm?
100 m/s at diameter of 40 mm
23 m/s at diameter of 120 mm
66.3m/s at diameter of 40 mm
600 m/s at diameter of 120 mm
200 m/s at diameter of 120 mm
10 m/s at diameter of 40 mm
600 m/s at diameter of 40 mm
66.3m/s at diameter of 120 mm
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Multiple Choice
A large full water tank has a circular hole of 3 mm radius, positioned 10 m below the water level in the tank. On top, the tank is not covered. Calculate the speed at which the water will come out and the volume of water to be discharged per time unit.
Velocity 14 m3/s
Volume of water 4x10-4 m/s
Velocity 14 m/s
Volume of water 4x10-4 m3/s
Velocity 10 m/s
Volume of water 4 m3/s
Velocity 14 m/s
Volume of water 2.82x10-5 m3/s
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Open Ended
If the pipe of the previous exercise is connected to a hose and the speed there is 3.8 m/s, what is the diameter of the hose?
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Open Ended
A certain oil with a density of 780 kg/m3 is flowing inside a pipe at a flow rate of 8l t/s and passes through a section of 8.0 cm in diameter, a) what is the speed at which the oil flows? b) If the oil passes through a second section of the pipe with a speed of 6.8 m/s. What is the radius?
by Liliana BC
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