Mechanical Properties of Fluids
Two spherical bodies having masses m1,m2 respectively falling in viscous medium the ratio of terminal velocities isv2v1=(m2m1)2/3.
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When a 'U' shaped slider of negligible mass is dipped in a soap solution and lifted, a thin film of soap is formed in the frame. It supports a weight of 2.0 x 10−2 N. If the length of the slider is 40cm, the surface tension of the film of soap is:
The surface tension of soap solution is 0.03 N/m. The work done in blowing to form a soap bubble of surface area 40 cm2, (in J), is
A glass capillary tube of internal radius r=0.25 mm is immersed in water. The top end of the tube projects by 2 cm above the surface of the water. At what angle does the liquid meet the tube? Surface tension of water=0.07 N m−1 and its contact angle is 0.
Calculate the pressure inside a small air bubble of radius 0.01mm situated at a depth of h=20m below the free surface of liquid of density ρ1=103kg/m3,ρ2=800km/m3 and surface tension T2=7.5×10−2N/m. The thickness of the first liquid is h1=15m and h2=25m.
The work done to form a layer of soap solution on a frame of size 10 cm × 10 cm will be (Surface tension of soap solution 3×102 N/m)
A cone of radius R and height H is hanging inside a liquid of density by means of a string as shown in the figure.
A 10 cm long wire is placed horizontally on the surface of the water and is gently pulled up with a force of 2×102N to keep the wire in equilibrium. The surface tension, in Nm−1 of water is
A rectangular tank is placed on a horizontal ground end is filled with water to a height H above the base. A small hole is made on one vertical side at a depth D below the level of water in the tank. The distance x from the bottom of the tank, at which the water jet from the tank will hit the ground is,