The fact that heavy airplanes can fly through the air, best illustrates,
Pascal’s principle
Superposition
Bernoulli’s principle
Archimedes principle
Which property of the object most determines whether or not an object will float in oil?
weight
density
mass
volume
Choose the device used to measure atmospheric pressure, invented by Torricelli.
thermometer
barometer
altimeter
lactometer
What happens when altitude increases?
pressure increases
density increases
density decreases
both pressure and density increases
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.
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
A stone weighs 25gm in air and 15 gm in water. Calculate the density of the stone?
250gm/cc
2500gm/cc
2.5gm/cc
2.5kg/m3
A 20 kg solid block of Aluminum (ρAl = 2.70 g/cc) is placed in a beaker of water filled to the brim. Some water overflows. The same is done in another beaker with a 20 kg solid block of lead (ρlead = 11.3 g/cc). Does the block of lead displace more, less, or the same amount of water as the aluminum block?
More
Same amount.
Less
There is not enough information.
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.
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
