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WorksheetsPHY01 PRELIM EXAM
Total questions: 30
Worksheet time: 2hrs 28mins
At standard temperature and pressure, carbon dioxide has a density of 1.98 kg/m3. What volume does 0.75 kg of carbon dioxide occupy at standard temperature and pressure?
0.38 m3
1.49 m3
3.8 m3
0.86m3
What mass of water (at 4.0 °C) can be contained in a rectangular box whose dimensions are 20.0 cm by 5.00 cm by 2.00 cm? The density of water at 4.0 °C is 1.000 x 103 kg/m3 or 1 g/cm3
5.0 g
200000.0 g
200.0 g
50.0 g
The density of iron is 7860 kg/m3. What is the mass of an iron sphere whose diameter is 1 m? (Volume of a sphere= V =4/3πr 3)
4115.5 kg
0.5236 kg
5114 kg
15011. 6 kg
How much force does the atmosphere exert on one side of a vertical wall 5.00-m high and 12.0-m long? (1 atm= 101325Pa= 1.01 x105 Pa= 101.325 kPa)
6.08 x 106 N
6.08 x 105 N
1688.8 N
1.69 x 106 N
A child wants to pump up a bicycle tire so that its pressure is 3.0 x 105 Pa above that of atmospheric pressure. If the child uses a pump with a circular piston 0.035 m in diameter, what force must the child exert? (Area of a Circle= πr2)
144 N
289 N
120 N
240 N
A gas sample is confined within a chamber that has a movable piston. A small load is placed on the piston; and the system is allowed to reach equilibrium. If the total weight of the piston and load is 50.0 N and the piston has an area of 5.0 x 10-4 m2, what is the TOTAL pressure exerted on the piston by the gas?
Note: Atmospheric pressure is 1.013 X 105 Pa.
Total Pressure= Pexerted + Patmosphere
1 x 105 Pa
2 x 105 Pa
1.4 x 105 Pa
2.4 x 105 Pa
Using the value of atmospheric pressure at sea level, 1 x 105 Pa, estimate the total mass of the earth’s atmosphere above a 10-m2 area.
Note: Force= Weight= mg
1 x 105 kg
5 x 104 kg
5 x 10-5 kg
1 x 10-5 kg
In a classroom demonstration, a 75-kg physics professor lies on a “bed of nails.” The bed consists of a large number of evenly spaced, relatively sharp nails mounted in a board so that the points extend vertically outward from the board. While the professor is lying down, approximately 2000 nails make contact with his body.
How much Force does each Nail exert on the professor's body?
Note : F= W= mg
735 N
0.379 N
0.368 N
1470000 N
A swimming pool has the dimensions shown in the drawing. It is filled with water to a uniform depth of 12.00 m.
Note: The density of water = 1.00 x 103 kg/m3
What is the pressure exerted on the bottom of the swimming pool?
1.18 x 105 Pa
1.18 x 106 Pa
2.19 x 105 Pa
2.19 x 106 Pa
A swimming pool has the dimensions shown in the drawing. It is filled with water to a uniform depth of 12.00 m.
The density of water = 1.00 x 103 kg/m3.
The Atmospheric Pressure = 101325 Pa
What is the TOTAL pressure exerted on the bottom of the swimming pool?
Ptotal = Patm+Pexerted
2.19 x 105 Pa
1.18 x 105 Pa
5.88 x 104 Pa
2.5 x 105 Pa
The amount of force pushing on an area is the definition of ...
Force
Pressure
Volume
Density
Pressure can be measured in Pascals (Pa) or Newtons per square meter.
1 Pa = 1N/m2
TRUE
FALSE
A force is applied in a closed container, the pressure increases the same amount. EX: squeezing a water bottle or toothpaste
Pascal's Principle
Archimedes'
Principle
Bernoulli's Principle
Newton's Principle
What is the PRESSURE in the hydraulic fluid?
1210 N/m2
3025 N/m2
8000 N/m2
484 N/m2
What is the greatest benefit of using hydraulics?
The multiplication of speed
The multiplication of operating time
The multiplication of fuel efficiency
The multiplication of force
The largest barometer ever built was an oil-filled barometer constructed in Leicester, England in 1991. At an atmospheric pressure of 1.013x 105 Pa, the height of the oil column was 12.2 m.
What was the density of the oil used in the barometer?
330 kg/m3
830 kg/m3
846 kg/m3
231 kg/m3
In a car lift, compressed air exerts a force, F1 on a small piston having a radius of 5.5 cm. This pressure is transmitted to a second piston of radius 20 cm as shown in figure above. The mass of the car is 1250 kg.
Calculate the pressure on the smaller piston F1.
Note:
P1= P2
F1/A1= F2/A2
6.25 kPa
97.57 kPa
61.31 kPa
306.56 kPa
What happens to atmospheric pressure as a person goes higher?
Pressure decreases
Pressure increases
Pressure is constant
Pressure fluctuates
Pressure exerted on the bottom of a fluid filled container depends on the container shape.
TRUE
FALSE
Pressure exerted on an object is ALWAYS ________ to the surface.
parallel
perpendicular
sideways
downward
When depth increases, what happens to the pressure?
increases
decreases
fluctuates
remains the same
System that uses fluid to increase a force
machine
hydraulics
mechanical advantage
buoyancy
When a fluid fills a closed container, it exerts pressure
only on the bottom of the container
only on the sides of the container
everywhere inside the container
only on particles within the fluid
A submarine is found 20 meters below the surface of the sea. The density of sea water is 1020 kg m-3 and g = 10 m/s2 .
What is the pressure due to the sea water acting on the submarine?
2.04 x 102 Pa
2.04 x 105 Pa
2.04 x 103 Pa
2.04 x 10-2 Pa
Where is pressure the greatest on the dam?
A
B
C
D
The greatest ocean depths on the Earth are found in the Marianas Trench near the Philippines. Given its depth is 11.0 km and the density of seawater is 1200 kg/m3, How do you calculate the pressure due to the ocean at the bottom of this trench.
1200x10x11
1200x11000x10
1200x11
1200x10
Which of the following factors affect the pressure at the bottom of a container of liquid?
depth of the container
width of the container
temperature of the liquid
color of the liquid
At what depth is the pressure due to water on a diver equal to the atmospheric pressure
[Atmospheric pressure at sea level = 100 kPa;
density of water = 1,000 kg/m3]
1m
10m
20m
100m
Given that the pressure of sea water at the bottom of an ocean is 7.65 × 107 N m−2, calculate the depth of the ocean.
[Density of sea water = 1.02 × 103 kg m−3]
7.5 × 108 m
7.5 × 103 m
7.5 × 104 m
7.5 × 102 m
The density of mercury is 1.36 X 104 kg/m3. What is the mass of a 3.00 X 10-4-m3 sample of mercury?
0.045 kg
4.08 kg
2.94 kg
5.44 kg
