Mechanical Properties of Fluids
The velocity of water in a river is 18kmph near the surface. If the river is 4m deep, the shearing stress between horizontal layers of water in Nm−2 is (ηwater=1×10−3pa.s):
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Neglecting gravity, the potential energy of a molecule of a liquid on the surface of a liquid, when compared to the potential energy of a molecule inside a liquid, is:
A water drop is divided into 8 equal droplets. The pressure difference between the inner and outer side of the big drop will be
There is a horizontal film of soap solution On it a thread is placed in the form of a loop The film is punctured inside the loop and the thread becomes a circular loop of radius R If the surface tension of the soap solution be T then the tension in the thread will be
A closed bottle containing water (at 30oC) is carried in a spaceship and place on the surface of the moon. What will happen to the water when the bottle is opened?
The ratio of tensions in the string connected to the block of mass m2 in Fig. A.11 (a)−(b), respectively, is (friction is absent everywhere): [m1=50 kg,m2=80 kg and F=1000N]
Whan a midrib of a coconut leaf, pencil etc. are dipped in water, and taken out, water is seen sticking to them. Why?
A soap bubble with a radius 'r' is placed on another bubble with a radius R (figure) Angles between the films at the points of contact will be:
The work done in increasing the size of a rectangular soap film with dimensions 8 cm×3.75 cm to 10 cm×6 cm is 2×10−4J. The surface tension of the film in N/m is