WorksheetsAerodynamics - HW - PHYS
Total questions: 14
Worksheet time: 13mins
As the water falls from tap, its speed increases and cross sectional area:
Decreases
Increases
become zero
becomes Constant
Turbulent flow is
Unsteady and regular
Steady and regular
Unsteady and irregular
Steady and regular
Water emerges from a horizontal pipe of varying cross section. If it enters to the pipe with a velocity 0.2 m/s where the area of cross section is 0.5 m^2 and leaves at the end of pipe having area of cross section 0.2 m^2, what is the velocity of water coming out of the pipe?
0.2 m/s
0.5 m/s
0.4 m/s
0.25 m/s
Bernoulli’s equation is obtained by applying law of conservation of ___________.
Mass
Energy
Momentum
Force
Water flows through a garden hose with an inner diameter of 2.0 cm at a speed of 3.0 m/s. What is the speed of the water when it exits through a nozzle of diameter 1.0 cm?
12m/s
0.015m/s
0.005m/s
6m/s
Water enters a horizontal pipe of area 0.05 m² with a speed of 2.5 m/s. It then passes through a section where the pipe narrows to 0.02 m². What is the speed of the water in the narrower section?
6.25m/s
0.0025m/s
0.125m/s
1.25m/s
A fluid flows at 1.8 m/s in a section of pipe with area 0.03 m². If the flow speed increases to 4.5 m/s downstream, what is the radius of this circular section?
0.012m
0.06m
1.8m
0.3m
CHALLENGE: A pipe has a cross-sectional area of 0.015 m², and water flows through it at a speed of 4.0 m/s. What is the volume flow rate of the water?
0.06m3/s
267m3/s
0.00375m3/s
1.8m3/s
A pipe has three sections:
Section 1: area = 0.04 m², velocity = 2.0 m/s
Section 2: area = 0.02 m²
Section 3: velocity = 1.0 m/s
Find:
a) Velocity in section 2
b) Area in section 3
a) 4m/s
b) 0.08m2
a) 2m/s
b) 0.04m2
a) 8m/s
b) 0.02m2
a) 4m/s
b) 0.01m2
Where is the air speed greater, above or below the wing?
Above
Below
If the static pressure is lower above the wing and higher below the wing, what will the airplane do?
It will lift
It will sink
Neither lifts nor sinks
CHALLENGE: If a hairdryer blows a stream of air between two soda cans hanging side by side, the soda cans will ____________________.
rise
move away from each other
move towards each other
not move
Where is the static pressure greater, above or below the wing?
Above
Below
