Water flows through a pipe. The diameter of the pipe at point B is larger than at point A. Where is the water pressure greater?
Point A
Point B
Same at both A and B
Cannot be determined from the information given.
A 500 N weight sits on the small piston of a hydraulic machine. The small piston has area 2 cm2. If the large piston has area 40 cm2, how much weights can the large piston support?
25 N
500 N
10000 N
40000 N
The pressure at the surface of the ocean is 1 atm (1 x 105 Pa). At what approximate depth in the ocean water (ρ= 1025 kg/m3) would the absolute pressure be 2 atm?
1 m
10 m
100m
1000 m
Which of the following statements is true of the water in the pipe as the air is blown across the vertical tubes.
The water level in each pipe does not change.
The water level on the left rises and the water level on the right is lowered.
The water level on the left is lowered and the water level on the right rises.
The water level on both sides rises.
What depth of oil (in m), relative density 0.75, will give a gauge pressure of 275000 Pa
37.38
367
0.027
20.2 × 104
Which one of the following expresses the relationship between pressure, volume, and temperature of a fixed amount of gas?
Boyle's law
Charle’s law
Combined gas law
Ideal gas
Which of the following is the best statement of Pascal’s Law?
Pressure on a confined liquid is transmitted equally in all directions
A numerical arrangement where each number is the sum of the two numbers above
Two electrons cannot occupy the same quantum state at the same time
The volume of a gas is directly related to its temperature
A body weighs 30gm. in air, 15gm. in a liquid and 12gm. in water. Calculate the relative density of liquid.
0.8 g/cc
1.2 g/cc
0.8
1.2
The pressure at an underwater depth of 33.7 feet is 2 atmospheres (atm). At what depth would the pressure be 4 atmospheres?
67.4 feet
101.1 feet
134.8 feet
The pressure can never reach 4
Choose the device used to measure atmospheric pressure, invented by Torricelli.
thermometer
barometer
altimeter
lactometer
