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Physics — Second Secondary

Physics — Second Secondary

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Physics — Second Secondary 2026/2027

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Question bank: Chapter 4: Hydrodynamics

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  • Questions count: 3
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1.
Water flows through a pipe of cross-section 8 cm2 at 3 m/s into a section of 2 cm2. The speed there is:
0.75 m/s
6 m/s
12 m/s
24 m/s
2.
A volume flow rate of 0.004 m3/s passes through a section of area 2 cm2. The speed of water is:
2 m/s
8 m/s
20 m/s
200 m/s
3.
Blood flows slowest in the capillaries mainly because:
the capillaries are the longest vessels
their total cross-sectional area is the largest
blood is thicker there
the heart is far away
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