A boat of area  floating on the surface of a river is made to move horizontaly with a speed of  by applying a tangential force. If the river is  deep and the water in contact with the bed is stationary, what is the tangential force needed to keep the boat moving ? (viscosity of water 0.01 poise)

The slope of the tangent to the curve at is

To find the slope we differentiate the given curve w.r.t x.

The velocity of a small ball of mass m and density when dropped in a container filled with glycerine becomes constants after sometime. What is the viscous force acting on the ball? (density of glycerin is )

Complete the sentence If the height of a capillary is smaller than the height to which water should rise, then…..

By how much depth will the surface of a liquid be depressed in a glass tube of radius  0.2 mm if the angle of contact of the liquid is  and the surface tension is  0.547N? (Density of the liquid is)

A spherical soap bubble of radius 2 cm attached to the outside of a spherical bubble of radius 4 cm . Then what is the radius of the common surface?

To w hat height can mercury be filled in a resell without any leakage if there is a pin hole of diameter 0.1 mm at the bottom of the vessel. (Density of mercury kgm^-3, surface tension of mercury  - Angle of contact with the vessel for mercury=)

amount of energy evolved when eight droplets of mercury ( surface tension 0.55N  ) of radius  each combine into one drop is .......

In a Searle's experiment, the diameter of the wire as measured by a screw gauge of least count 0.1.m, is 110.0 cm, When a weight of 50 N is suspended from the wire, the extension is measured to 0.125 cm by a micrometer of least count 0.001 cmthe maximum error in the measurement of Young's modulus of the material of the wire is....N/m^2?

The compound is known by which of the following name ?

The IUPAC name of the compound
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The IUPAC name of the compound
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The IUPAC name of the given compound
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The IUPAC name of
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The IUPAC name of compound
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A solid sphere of radius  made of a material of bulk modulus K is surrounded by a liquid in a cylindrical container. Amassless piston of area A floats on the surface of the liquid. When a mass M is placed on the pisten to compress the liquid, the fractional change in the radius of the sphere   is.....