Pressure
What is the equation for pressure
P = F/A
What is the equation for bouyancy?
F = pVg
What is the equation for density?
p = M/V
What is the equation for Pascal's Principle?
P1 = P2
or F1/A1 = F1/A1
Block A is 20 m below the surface of water, Block B is 40 m below the surface. Which block has a greater pressure on it?
Block B
The force of bouyancy on an object is greater than the force of gravity. What is happening to the object?
Accelerating upward
On a density graph, what is the independent variable?
Volume
What is atmospheric pressure at sea level?
1 ATM
A book exerts a pressure of 3.25 x 10^3 Pa on a table. The book has dimensions of 0.25 x 0.18 m. What is the force of the book on the table?
140 N
85%
What is the density of a 8 m3 object that has a mass of 450 kg?
56.25 kg/m3
Describe Archimede's Principle.
What is the fluid pressure on an object that is 32 m under water.
425,000 Pa
What is the force of bouyancy on an object in water that has a volume of 3.5 m3?
34,335 N
A block has a density of 1300 kg/m3. Which of the following liquids will it float in?
a) Sea Water (1299 kg/m3)
b) Gas (600 kg/m3)
c) Corn Syrup (1330 kg/m3)
Corn Syrup
A car jack is used to lift a car. The large piston has a surface area of 0.004 m2 and the small piston has a surface area of 4.23 x 10-6. A car weighing 2000 N is on the large piston, what force must be applied to the small piston to lift the car?
2.115 N
2 children with a mass of 32 kg and 35 kg are floating in a boat. The boat measures 1.8m x 2.0m x 0.5m and weighs 50 kg. How much of the boat will be underwater?
0.03 m
A block of metal has a density of 5000 kg/m3 and a volume of 0.05 m3. What is its mass?
250 kg
A large tank is filled with water to a depth of 5m. A hole is drilled at 2m. What is the pressure at 2m? If the hole is plugged by a plug with an area of 1.26 x 10^-3 m2, what is the force of water on the plug?
1.96 x 10^4 Pa
24.7 N