U-Shaped Tube and Manometer Physics Quiz

What happens to the liquid levels in a U-shaped tube when the tube initially contains a single liquid?

• Levels are different in each branch
• Levels are exactly the same
• Levels depend on tube diameter
• Levels change randomly

When a second immiscible liquid is added to one branch of a U-tube, what determines the relationship between their heights?

• Tube diameter
• Liquid viscosity
• Density ratio (ρ2/ρ1)
• Temperature

What is the primary purpose of a manometer?

• Measuring liquid volume
• Measuring gas pressure
• Measuring temperature
• Measuring electrical current

When gas pressure is greater than atmospheric pressure, what happens in a manometer?

• Liquid levels remain unchanged
• Free branch liquid level rises
• Free branch liquid level drops
• Liquid completely exits the tube

Why is water often preferred in small pressure measurements?

• High density
• Low density
• High viscosity
• Electrical conductivity

In the equation PA = PB, what does 'P' represent?

• Power
• Momentum
• Pressure
• Potential energy

What does the formula Δ P = ρ g h represent?

• Pressure difference
• Gravitational acceleration
• Liquid density
• Height measurement

What is systolic blood pressure typically measured as?

• 80 torr
• 120 torr
• 100 torr
• 60 torr

What is diastolic blood pressure typically measured as?

• 80 torr
• 120 torr
• 100 torr
• 60 torr

When gas pressure is less than atmospheric pressure in a manometer, what occurs?

• Free branch liquid level rises
• Free branch liquid level drops
• Liquid remains static
• Tube pressure equalizes