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Is pressure a vector quantity?

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प्रश्न

Is pressure a vector quantity?

एक पंक्ति में उत्तर
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उत्तर

Pressure is a scalar quantity.

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अध्याय 4: Fluids - Exercise 3 [पृष्ठ १७७]

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फ्रैंक Physics Part 1 [English] Class 9 ICSE
अध्याय 4 Fluids
Exercise 3 | Q 3 | पृष्ठ १७७

संबंधित प्रश्न

A body X sinks in water, but a body Y floats on water. The density of the body X is ......... than the density of body Y.


The density of aluminium is 2.7 g cm-3 and that of brass 8.4 g cm’3. The correct statement is


Name the S.I. unit of density. How is it related to g Cm-3?


Distinguish between density and relative density.


Which of the following will sink or float on water? (Density of water = 1 g Cm-3)

 body C having density 1100 kg m-3


Differentiate between thrust and pressure.


The diagram below in Fig. 4.12 shows a device which makes the use of the principle of transmission of pressure.

  1. Name the parts labelled by the letters X and Y.
  2. Describe what happens to valves A and B and to the quantity of water in the two cylinders when the lever arm is moved down.
  3. Give reasons for what happens to valves A and B in part (ii).
  4. What happens when the release valve is opened?
  5. What happens to valve B in cylinder P when the lever arm is moved up?
  6. Give a reason for your answer in part (v).
  7. State one use of the above device.

  1. Calculate the height of a water column which will exert on its base the same pressure as the 70 cm column of mercury. Density of mercury is 13.6 g cm-3.
  2. Will the height of the water column in part (a) change if the cross-section of the water column is made wider?

A block of wood is floating on water with its dimensions 50 cm x 50 cm x 50 cm inside water. Calculate the buoyant force acting on the block. Take g = 9.8 N kg-1. 


Complete the analogy.

Downward force : Weight :: Upward force offered by liquid : ______


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