Water flows through a pipe of varying cross-section. If the velocity of flow is 0.24 m/s at a cross- section of 5`cm^2`, what will beits velocity at a cross-section of `10 cm^2`?

What is the unit for measuring nuclear cross section.

Water is flowing steadily through a horizontal pipe of non- uniform cross-section. The pressure of water is 4xx10^4 at a point, where cross-section is 0.02m^2 and velocity of flow is 2ms^-1 . What is the pressure at a point, where cross-section reduces to 0.01m^2 ?

Two equal drops of water are falling through air with a steady velocity of 0.1m/s. if the drops coalese, what will be its velocity?

Water flows horizontally through a pipeline of varying cross-section. At two points A and B, the diameters are 0.6 m and 0.2m. The pressure difference between the points is 1m. Column of water. Calculate the volume of water flowing per second.

Explain the following : How does the resistance of a wire vary with its area of cross-section?

A body of mass 2kg moving with velocity 10 m/s collides another body of mass 500 g and moving with velocity 4 m/s. After collision if the 2nd body attains velocity of 8m/s, what will be the velocity of first body?

A current of 10 ampere passes through a wire having cross-sectional area 1mm^2 . The number of free electron peer 1m^3 of the conductor is 10^(28) . Find the drift velocity of electron.

If the length of a wire is doubled and cross-sectional area is halved, what happens to the resistance?

Two equal drops of water are falling through air with a steady velocity of 10 cm/s. If the two drops recombine to a single drop, what will be the terminal velocity