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प्रश्न
Complete the following sentence :
Pressure at all points at the same depth is ....................
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उत्तर
Pressure at all points at the same depth is the same
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संबंधित प्रश्न
What do you understand by the term upthrust of a fluid? Describe an experiment to show its existence.
A small block of wood is completely immersed in (i) water, (ii) glycerine and then released. In each case, What do you observe? Explain the difference in your observation in the two cases.
Two spheres A and B, each of volume 100 cm3 is placed on water (density = 1.0 g cm−3). The sphere A is made of wood of density 0.3 g cm−3 and sphere B is made of iron of density 8.9 g cm−3.
- Find:
- The weight of each sphere, and
- The upthrust on each sphere.
- Which sphere will float? Give reason.
A body of mass 3.5 kg displaces 1000 cm3 of water when fully immersed inside it. Calculate:
- the volume of body,
- the upthrust on body and
- the apparent weight of body in water.
A homogeneous block floats on water (a) partly immersed (b) completely immersed. In each case state the position of centre of buoyancy B with respect to the centre of gravity G of the block.
The blood pressure reading of a patient is recorded 160/100. Express the lower pressure in SI units.
[Take density of mercury as 13.6 × 103 kgm−3 and the value of ‘g’ as 10 ms−2]
Is thrust a scalar or vector quantity?
Complete the analogy.
Downward force: Weight:: Upward force offered by liquid: _____
State whether true or false. If false, correct the statement.
The weight of fluid displaced determines the buoyant force on an object.
Complete the analogy.
Downward force : Weight :: Upward force offered by liquid : ______
