|
(a) Liquid drops are spherical in shape. Why?
|
|
2
|
4309
|
February 16, 2021
|
|
By using Stokes law, derive an expression for terminal velocity. On what factors does it depend?
|
|
1
|
45379
|
September 2, 2019
|
|
Which of the following properties could be used to solve the following equation? x - 4 = 12
|
|
0
|
632
|
March 19, 2018
|
|
Explain why :(a) To keep a piece of paper horizontal, you should blow over, not under it
|
|
1
|
4765
|
August 20, 2016
|
|
(a) Explain Magnus effect, in case of spinning ball
|
|
1
|
4165
|
August 20, 2016
|
|
In deriving Bernoulli's equation, we equated the work done on the fluid in the tube to its change in the potential and kinetic energy
|
|
1
|
3505
|
August 20, 2016
|
|
What is the pressure difference between the two ends of the tube?
|
|
1
|
1515
|
August 20, 2016
|
|
An air bubble of radius r rises steadily through a liquid of density p at the rate of v. Neglecting density of air, find the coefficient of viscosity of liquid
|
|
0
|
4741
|
August 20, 2016
|
|
In Millikan's oil drop experiment, what is the terminal speed of an uncharged drop of radius 2.0 x ${{10}^{-5}}$ m and density of 1.2 X ${{10}^{3}}$ kg ${{m}^{-3}}$?
|
|
1
|
4037
|
August 20, 2016
|
|
Figures (a) and (b) refer to the steady flow of a (non-viscous) liquid. Which of the two figures is incorrect ? Why?
|
|
1
|
1542
|
August 20, 2016
|
|
In a test experiment on a model aeroplane in a wind tunnel, the flow speeds on the upper and Tower surface of the wing are 70 m${{s}^{-1}}$ and 63 m${{s}^{-1}}$ respectively. What is the lift on the wing if its area is 2.5 ${{m}^{2}}$
|
|
0
|
1776
|
August 20, 2016
|
|
Why do cloud float in the sky?
|
|
0
|
2368
|
August 20, 2016
|
|
Why are the cars and aeroplanes given stream line shape?
|
|
0
|
655
|
August 20, 2016
|
|
Bernoulli's theorem holds for incompressible, non-viscous fluids. How is this relationship changed when the viscosity of the fluid is not negligible?
|
|
0
|
2159
|
August 20, 2016
|
|
Is Bernoulli's theorem valid for viscous liquid?
|
|
0
|
1398
|
August 20, 2016
|
|
What is Torricelle's law?
|
|
0
|
576
|
August 20, 2016
|
|
Write any two points of steamlines
|
|
0
|
636
|
August 20, 2016
|
|
Does it mat ter if one uses gauge instead of absolute pressure in applying Bernoulli's equation?
|
|
0
|
866
|
August 20, 2016
|
|
Can Bernoulli's equation be used to describe the flow of water through a rapid flow in a river?
|
|
0
|
1841
|
August 20, 2016
|
|
What is the terminal velocity of a body in a freely falling system?
|
|
0
|
2000
|
August 20, 2016
|
|
The diameter of ball X is twice of that of Y. What will be the ratio of their terminal velocities in water?
|
|
0
|
2361
|
August 20, 2016
|
|
Where and why high viscosity liquids are used in trains?
|
|
0
|
2674
|
August 20, 2016
|
|
If water in a flask and caster oil in other are violently shaken and kept on a table, then whilch one will come to rest earlier?
|
|
0
|
638
|
August 20, 2016
|
|
Derive an expression for the radius of interference when two soap bubbles of different radii are in contact
|
|
0
|
2870
|
August 20, 2016
|
|
Derive the formula for rise of liquid in a capillary tube (Ascent formula)
|
|
0
|
74411
|
August 20, 2016
|
|
Explain surface energy. Establish its relation with surface tension
|
|
0
|
13658
|
August 20, 2016
|
|
Find the excess pressure:
|
|
1
|
11981
|
August 20, 2016
|
|
Explain why small drops of mercury are spherical and large drops become flat?
|
|
0
|
4476
|
August 20, 2016
|
|
Two capillaries of same length and radii in the ratio 1:2 are connected in series
|
|
1
|
4134
|
August 20, 2016
|
|
A U-shaped wire is dipped in a soap solution and removed
|
|
1
|
2056
|
August 20, 2016
|