Thermal Propert...

Water flowing out of the mouth of a tap and falling vertically in stream line flow forms a tapering column, i.e., the area of cross-section of the liquid column decreases at it moves down. Which of the following is the most accurate explanation for this?

A tank is filled with water upto a height H. Water is allowed to come out of a hole P in one of the walls at a depth h below the surface of water Fig. Express the horizontal distance X in terms of H and h.

A small spherical solid ball is dropped in a viscous liquid. The variation of its velocity with distance travelled in the liquid is said to be given by curves A, B, C and D. its journey in the liquid is best described in the curve shown by

In a cylindrical vessel containing liquid of density ρ, there are two holes in the side wall at heights h₁ and h₂ respectively such that the range of efflux at the bottom of the vessel is same. The height of a hole, for which the range of efflux would be minimum, will be

Air is streaming past a horizontal air plane wing such that its speed is 120 ms^–1 over the upper surface and 90 m/s at the lower surface. If the density of air is 1.3 kg/m³, find the difference in pressure between the top and the bottom of the wing. If the wing is 10 m long and has an average width of 2m, what will be the Gross lift on the wing?

In Vander Waal’s equation the critical pressure Pc is given by

At room temperature, the rms speed of the molecules of a certain diatomic gas is found to be 1930 m/s. The gas is

An ideal gas is found to obey an additional law VP² = constant. The gas is initially at temperature T and volume V. When it expands to a volume 2 V, the temperature becomes

The extension in a string obeying Hooke’s law is x. The speed of sound in the stretched string is υ. If the extension in the string is increased to 1.5 x, the speed of sound will be