Choose the device used to measure atmospheric pressure, invented by Torricelli.
thermometer
barometer
altimeter
lactometer
Which property of the object most determines whether or not an object will float in oil?
weight
density
mass
volume
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
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.
The fact that heavy airplanes can fly through the air, best illustrates,
Pascal’s principle
Superposition
Bernoulli’s principle
Archimedes principle
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
A liquid has a specific gravity of 0.357. What is its density?
357 kg/m3
643 kg/m3
1000 kg/m3
3570 kg/m3
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
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
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.
