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Physics — Second Secondary

Physics — Second Secondary

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Physics — Second Secondary 2026/2027

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Chapter 4: Hydrodynamics — Picture questions (exam style)

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  • Questions count: 1
  • Passing grade: 60%
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1.
A plate of area 0.02 m2 moves at 2 m/s over a liquid layer 1 mm thick with viscosity 0.5 N s m−2 (figure). Which option is correct?
A plate of area 0.02 m² moves at 2 m/s over a liquid layer 1 mm thick with viscosity 0.5 N s m⁻² (figure). Which option is correct?
F = 200 N, force doubles if speed doubles
F = 20.0 N, force doubles if speed doubles
F = 1000 N, force doubles if speed doubles
F = 20.0 N, force doubles if thickness d doubles