Advertisements
Advertisements
प्रश्न
The pressure in a liquid at two points in the same horizontal plane are equal. Consider an elevator accelerating upward and a car accelerating on a horizontal road. The above statement is correct in
पर्याय
the car only
the elevator only
both of them
neither of them
Advertisements
उत्तर
the elevator only
The two points in the same horizontal line will not have equal pressure if the liquid is accelerated horizontally. There should be vertical acceleration.
APPEARS IN
संबंधित प्रश्न
Two vessels have the same base area but different shapes. The first vessel takes twice the volume of water that the second vessel requires to fill up to a particular common height. Is the force exerted by the water on the base of the vessel the same in the two cases? If so, why do the vessels filled with water to that same height give different readings on a weighing scale?
For a given thrust, pressure is more on a surface of large j area.
It is easier to hammer a blunt nail into a piece of wood than a sharply pointed nail.
Water in a lake exerts pressure only at its bottom.
1 kgf = .............. (nearly).
Pressure is reduced if .................... increases.
A body weighing 5 kgf, placed on a surface of area 0.1 m2, exerts a thrust on the surface equal to
Calculate the pressure in pascal exerted by a force of 300 N acting normally on an area of 30 cm2.
A beaker containing a liquid is kept inside a big closed jar. If the air inside the jar is continuously pumped out, the pressure in the liquid near the bottom of the liquid will
Find the pressure 200m below the surface of the ocean if pressure on the free surface of liquid is one atmosphere. (Density of seawater = 1060 kg/m3)
Explain the variation of the pressure exerted by liquid with respect to the following factors.
- Amount of liquid
- Depth
- Shape and size of the container
Explain why the cutting instruments are sharpened.
Why dams are made stronger and thicker at the bottom than at the top?
Give reasons why:
a single nail pricking the body is painful when compared to lying on a bed of nails.
Give reasons why:
heavy trucks are fitted with 6 to 8 wheels
In petrol bunks, in what unit is tire pressure measured?
It is easy to compress a gas whereas liquids are ______.
Hot air is ______ dense than ordinary air.
The shape and size of the solids do not easily change.
A vessel filled with water is kept on a weighing pan and the scale adjusted to zero. A block of mass M and density ρ is suspended by a massless spring of spring constant k. This block is submerged inside into the water in the vessel. What is the reading of the scale?
