|
A 50 kg of girl wearing high heel shoes balances on a single heel. The heel is circular with a diameter 1.0 cm. What is the pressure exerted by the heel on the horizontal floor?
|
|
0
|
4583
|
August 20, 2016
|
|
The density of the atmosphere at sea level is 1.29 kg m-3. Assume that it does not change with altitude. Then how high would the atmosphere extend?
|
|
0
|
7906
|
August 20, 2016
|
|
What is the pressure on a swimmer 10 m below the surface of a lake?
|
|
0
|
9580
|
August 20, 2016
|
|
The excess pressure inside a soap bubble is thrice the excess pressure inside a second soap bubble. What is the ratio of volume?
|
|
0
|
3666
|
August 20, 2016
|
|
Explain why it is difficult to make mercury enter a fine thermometer tube?
|
|
0
|
1483
|
August 20, 2016
|
|
A man is sitting in a boat which is floating in a pond. If the man drinks some water from the pond, what will happen to the level of water in the pond?
|
|
0
|
7174
|
August 20, 2016
|
|
A barometer kept in an elevator accelerating upwards reads 76 cm. What will be the possible air pressure in the elevator?
|
|
0
|
6017
|
August 20, 2016
|
|
A barometer kept in an elevator accelerating downward read 76 cm. What will be the possible air pressure in the elevator?
|
|
0
|
1798
|
August 20, 2016
|
|
If a small ping-pong ball is placed in a vertical jet of water or air, it will rise to a certain height above the nozzle and stay at that level. Explain
|
|
0
|
2924
|
August 20, 2016
|
|
How does the burner of a gas work?
|
|
0
|
753
|
August 20, 2016
|
|
How does an atomiser work?
|
|
0
|
2447
|
August 20, 2016
|
|
What is an ideal fluid?
|
|
0
|
4767
|
August 20, 2016
|
|
What are absolute pressure and gauge pressure?
|
|
0
|
1527
|
August 20, 2016
|
|
What is atmospheric pressure ? Give its different units
|
|
0
|
1142
|
August 20, 2016
|
|
Derive equation of continuity
|
|
0
|
16110
|
August 20, 2016
|
|
Show that a liquid in a state of equilibrium of rest exerts a force perpendicular to the surface only
|
|
0
|
2660
|
August 20, 2016
|
|
Velocity of water in a river is less on the bank and greater in the middle. Why?
|
|
0
|
2354
|
August 20, 2016
|
|
What is equation of continuity?
|
|
0
|
645
|
August 20, 2016
|
|
Define centre of buoyancy
|
|
0
|
539
|
August 20, 2016
|
|
What is indicated by sudden fall in barometric pressure?
|
|
0
|
509
|
August 20, 2016
|
|
What is column pressure?
|
|
0
|
641
|
August 20, 2016
|
|
What is specific gravity?
|
|
0
|
1210
|
August 20, 2016
|
|
Name the material in whose capillary, water will descent instead of rising
|
|
0
|
1844
|
August 20, 2016
|
|
A wooden block is on the bottom of a tank when water is poured in the contact between the block and the tank is so good that no water gets between them. Is there a buoyant force on the block?
|
|
0
|
1242
|
August 20, 2016
|
|
A liquid cannot withstand a shear stress. How does this imply that the surface of liquid at rest must be level, i.e., normal to the gravitational force?
|
|
0
|
760
|
August 20, 2016
|
|
The dams of water reservoir are made thick near the bottom. Why?
|
|
0
|
1214
|
August 20, 2016
|
|
How can we check whether the barometric tube contains air or not?
|
|
0
|
1081
|
August 20, 2016
|
|
Why is the reading of a mercury barometer always less than actual pressure?
|
|
0
|
2369
|
August 20, 2016
|
|
Why is mercury used in barometer?
|
|
0
|
2942
|
August 20, 2016
|
|
If a drop of water vapour is introduced in a mercury barometer, how will the barometric height change?
|
|
0
|
1529
|
August 20, 2016
|