Which property of the object most determines whether or not an object will float in oil?
weight
density
mass
volume
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
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
One piston in a hydraulic lift has an area that is twice the area of the other. When the pressure at the smaller piston is increased by ∆p the pressure at the larger piston:
increases by 2∆p
increases by ∆p/2
increases by ∆p
increases by 4∆p
At constant temperature, the relationship between the volume (V) of a given mass of gas and its pressure (P) is
V = k P
P = kV
PV = k
V/P = k
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
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
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
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
