Advertisements
Advertisements
प्रश्न
Which of the following will sink or float on water? (Density of water = 1 g Cm-3)
body D having density 0.85 g m-3
Advertisements
उत्तर
Density of water = 1 g Cm-3
Density of body D = 0.85 g m-3 < 1.0 g Cm-3
Density of body D is less than the density of water hence body D will FLOAT on water
APPEARS IN
संबंधित प्रश्न
An object of weight 200 N is floating in a liquid. What is the magnitude of buoyant force acting on it ?
State whether pressure is a scalar or vector?
Complete the following sentence :
Pressure is .................... in all directions about a point in a liquid.
A block of iron of mass 7.5 kg and of dimensions 12 cm × 8 cm × 10 cm is kept on a table top on its base of side 12 cm × 8 cm.
Calculate:
- Thrust and
- Pressure exerted on the table top
Take 1 kgf = 10 N.
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.
Will a body weigh more in air or vacuum when weighed with a spring balance? Give a reason for your answer.
A metal solid cylinder tied to a thread is hanging from the hook of a spring balance. The cylinder is gradually immersed into the water contained in a jar. What changes do you expect in the readings of the spring balance? Explain your answer.
A body weighs 450 gf in air and 310 gf when completely immersed in water. Find
(i) The volume of the body,
(ii) The loss in weight of the body, and
(iii) The upthrust on the body.
State the assumption made in part (i).
What do you mean by buoyancy?
Consider the statement given below and choose the correct option.
Assertion: Water strider slides easily on the surface of the water.
Reason: Water strider experiences less buoyant force.
