Mechanical Properties of Fluids

Related Questions

• Radius of a soap bubble is increased from $R$ to $2R$ work done in this process in terms of surface tension is

  ---

• When two soap bubbles of radius ${{r}_{1}}$and ${{r}_{2}}$ $({{r}_{2}}>{{r}_{1}})$ coalesce, the radius of curvature of common surface is

  ---

• The weight of an aeroplane flying in air is balanced by

  ---

• The force required to take away a flat circular plate of radius 2 cm from the surface of water, will be (the surface tension of water is 70 dyne/cm)

  ---

• A thin metal disc of radius $r$ floats on water surface and bends the surface downwards along the perimeter making an angle $\theta$ with vertical edge of the disc. If the disc displaces a weight of water $W$ and surface tension of water is $T$, then the weight of metal disc is

  ---