Advertisements
Advertisements
Question
Define the term relative density of a substance.
Advertisements
Solution
RELATIVE DENSITY: “is the ratio of the density of a substance to the density of water at 4° C.”
Or
RELATIVE DENSITY “is the ratio of the mass of the substance to the mass of an equal volume of water at 4° C.”
APPEARS IN
RELATED QUESTIONS
Fill in the blank with suitable word :
It is the................. force which makes objects appear lighter in water.
Complete the following sentence :
Pressure of a liquid at a given depth is .................. To the density of the liquid.
Two cylindrical vessels fitted with pistons A and B of area of cross-section 8 cm2 and 320 cm2 respectively are joined at their bottom by a tube and they are completely filled with water. When a mass of 4 kg is placed on piston A, Find:
- the pressure on piston A,
- the pressure on piston B, and
- the thrust on piston B.
What do you understand by the term upthrust of a fluid? Describe an experiment to show its existence.
Prove that the loss in weight of a body when immersed wholly or partially in a liquid is equal to the buoyant force (or upthrust) and this loss is because of the difference in pressure exerted by liquid on the upper and lower surfaces of the submerged part of body.
Select the correct option.
The unit Nm2 is the unit of
The base of the cylindrical vessel measures 300 cm2. Water is poured into it up to a depth of 6 cm. Calculate the pressure of water on the base in the vessel.
Is thrust a scalar or vector quantity?
State whether true or false. If false, correct the statement.
The weight of fluid displaced determines the buoyant force on an object.
Write about buoyant force.
