With the increase in the weight of an object the pressure
Increases
Decreases
Is not affected
None of these
In which of the following activity, friction is useful?
Driving a car
Hitting a ball with bat
Rowing a boat
Sitting on a chair
The SI unit of pressure is :
Newton
Joule
Watt
Pascal
The atmospheric pressure is due to the:
The sky above our head
Air mass surrounding earth
Gravitational force of sun and other planets
Mass of the earth
1 newton is equivalent to :
1kg m/s
1kg m/s2
1kg2 m2/s2
1g
Sonia dropped some steel pins into a jar of liquid. She then tried to remove the pins using a magnet over the surface of the jar. But she found that pins were not attracted to the magnet. which of the following could be the most likely reason for this?
The jar is made of non-magnetic material
The jar is made of a magentic material
Sonia moved the magnet over the surface of jar too slowly
The pins are non-magnetic
How much force is acting perpendicular to a surface having area of 0.5m2, will produce a pressure of 500 Pa ?
250 N
350 N
450 N
200 N
Pressure is defined as :
force × distance
mass / volume
force / area
mass × acceleration
Barometer is used for measuring :
Liquid pressure
Thrust
Atmospheric pressure
Air temperature
Pressure depends an ............. and ............... . Which information completes the given statement?
Mass, Force
Mass, Volume
Force, Area
Force, Volume
