Can you take the Pressure?

Both beakers contain water filled to the same level. Which statement is correct?

• The base of beaker A experiences larger liquid pressure.

• The base of beaker B experiences larger liquid pressure.

• The bases of beaker A and B experience the same liquid pressure.

What is the formula and unit for pressure due to liquid?

•  $\rho Vg$  [Pa]
  

•  $\rho Vg$  [N]
  

•  $\rho hg$  [N]
  

•  $\rho hg$  [Nm $^{-2}$ ] 
  

Which statement is an incorrect explanation for why it is not practical to construct a barometer with water?

• The column would be too tall.

• The density of water is much higher than that of mercury.

• The water will evaporate.

• The density of water is much lower than that of mercury.

Which quantities also need to be known in order to determine the difference in pressure between the atmosphere and the gas supply?

• density of the gas

• density of the liquid

• cross-sectional area of the tube

• h

Hydraulic systems use natural gas as an enclosed fluid.

• True

• False

A downward force of 10 N is exerted on piston A. What is the upward force on piston B?

• 10 N

• Larger than 10 N

• Smaller than 10 N

• It is not possible to determine.

Sally exerts an 50 N force on the 0.015 m $^2$  brake pedal. What is the area (in m $^2$  ) of the large piston if 2000 N is required to stop the bicycle?

• 3.75 $\times10^{-4}$  

• 3.75 $10^{-3}$ 

• 6

• 0.6

Calculate the pressure of the empty space (not vacuum) above the mercury column in terms of cm Hg. (Note: Atmospheric pressure is 76cm Hg)

• 4

• 0.04

• 0.4

• 0.72

• 0.28

Find the density of oil in kg/m $^3$   given the density of water to be 1.00 $\times$  $10^3$   kg/m $^3$ and air to be 1.23 $\times$  $10^3$   kg/m $^3$ .

• 1.02 $\times10^3$  

• 8.23 $\times10^2$  

• 7.40 $\times10^2$  

• 9.01 $\times10^2$  

Did you enjoy Quizziz?

• Yes!!

• No, I can't take the pressure!