Advertisements
Advertisements
प्रश्न
Explain why Hydrostatic pressure is a scalar quantity even though the pressure is force divided by area.
Advertisements
उत्तर
When force is applied on a liquid, the pressure in the liquid is transmitted in all directions. Hence, hydrostatic pressure does not have a fixed direction and it is a scalar physical quantity.
APPEARS IN
संबंधित प्रश्न
In problem 10.9, if 15.0 cm of water and spirit each are further poured into the respective arms of the tube, what is the difference in the levels of mercury in the two arms? (Specific gravity of mercury = 13.6)
A plane is in level flight at a constant speed and each of its two wings has an area of 25 m2. If the speed of the air is 180 km/h over the lower wing and 234 km/h over the upper wing surface, determine the plane’s mass. (Take air density to be 1 kg m–3).
The unit of pressure is .........
Pressure is reduced if .................... increases.
The unit of thrust is
How is the thrust related to pressure?
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
In a hydraulic lift, the input piston had surface area 30 cm2 and the output piston has surface area of 1500 cm2. If a force of 25 N is applied to the input piston, calculate weight/force on output piston.
Consider the statement given below and choose the correct option.
Assertion: Broad straps are used in bags.
Reason: Broad straps last for long.
A water tank has four taps fixed at points A, B, C, D as shown in the following figure. The water will flow out at the same pressure from taps at
If the same force is made to act on a larger area, the pressure ______.
At higher altitudes, atmospheric pressure is ______.
Assertion: The pressure at the bottom of the sea is lesser than that near the surface.
Reason: The pressure exerted by a liquid depends upon the depth of the liquid and density of the liquid.
Determine the pressure when a force of 200 N acts on the area
- 20 m2
- 8 m2
Give reasons why:
a single nail pricking the body is painful when compared to lying on a bed of nails.
Give reasons why:
cutting edges of knives and axes are sharpened.
All flowing substances, both liquids, and gases are called ______.
Assertion (A): A sleeping mattress is so designed that when you lie on it, a large area of your body comes in its contact.
Reason (R): This reduces the pressure on the body and sleeping becomes comfortable.
Define thrust.
