|
Calculate the number of aluminium ions (Al3+) in 0.056 g of alumina (AL203)
|
|
2
|
1673
|
July 3, 2020
|
|
What is Physics,Chemistry and Biology?
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|
2
|
620
|
July 17, 2019
|
|
What is the valency of argon
|
|
2
|
329
|
June 24, 2019
|
|
Compare the properties of electrons,protons and neutrons
|
|
2
|
379
|
June 18, 2019
|
|
Can you please suggest me a science project(a working model) related to physics
|
|
2
|
578
|
June 17, 2019
|
|
Explain the three zones of a flame by taking the example of candle flame
|
|
2
|
439
|
June 17, 2019
|
|
Two identical bullets are fired one by a light rifle and the other by a heavy rifle with the same force. Which rifle will hurt the shoulder more and why?
|
|
2
|
3194
|
September 17, 2018
|
|
Figure shows a conveyor belt transporting a package to a raised platform. The belt is driven by a motor
|
|
1
|
2523
|
March 21, 2018
|
|
A car of mass 900 kg is travelling at a steady speed of 30 m/s against a resistive force of 2000 N, as illustrated in figure
|
|
1
|
4650
|
March 21, 2018
|
|
Four men lift a 250 kg box to a height of 1 m and hold it without raising or lowering it
|
|
1
|
1125
|
March 21, 2018
|
|
A light and a heavy object have the same momentum, find out the ratio of their kinetic energies. Which one has a larger kinetic energy
|
|
1
|
641
|
March 21, 2018
|
|
Show that when a body is dropped from a certain height, the sum of its kinetic energy at any instant during its fall is constant
|
|
1
|
3089
|
March 21, 2018
|
|
Briefly describing the gravitational potential energy
|
|
1
|
610
|
March 21, 2018
|
|
A body thrown at a certain angle to the ground moves in a curved path and falls back to the ground
|
|
1
|
499
|
March 21, 2018
|
|
Two workmen are employed on a building project, as shown in figure
|
|
1
|
766
|
March 21, 2018
|
|
Figure shows, in order, five stages of an athlete successfully performing a pole-vault
|
|
1
|
759
|
March 21, 2018
|
|
Give one example of each of the following: Small mass but high kinetic energy
|
|
1
|
1364
|
March 21, 2018
|
|
A cube of side 5 cm is immersed in water and then in saturated salt solution. In which case will it experience a greater buoyant force
|
|
1
|
1993
|
March 21, 2018
|
|
The velocity of a body moving in a straight line is increased by applying a constant force
|
|
1
|
2654
|
March 21, 2018
|
|
Explain, with the help of an example the difference between the terms thrust and pressure. Which one of the two has same SI unit as that of Forc
|
|
1
|
1616
|
March 21, 2018
|
|
Avinash can run at a speed of 8 ms-1 against the frictional force of 10 N, and Kapil can move at a speed of 3 ms-1 against the frictional force of 25 N. Who is more powerful and why?
|
|
1
|
987
|
March 21, 2018
|
|
A rocket is moving up with a velocity v. If the velocity of this rocket is suddenly tripled, what will be the ratio of two kinetic energies?
|
|
1
|
1790
|
March 21, 2018
|
|
State and explain the experiment for verification of Archimedes’ principle. Name the devices based on Archimedes’ principle
|
|
1
|
8886
|
March 21, 2018
|
|
Derive an expression for kinetic energy of an object
|
|
1
|
4682
|
March 21, 2018
|
|
What types of energy transformation takes place in the following:
|
|
1
|
2428
|
March 21, 2018
|
|
Loaded test-tube placed in pure milk sinks to a certain mark (M)
|
|
1
|
832
|
March 21, 2018
|
|
Give three examples when the object is not displaced in spite of a force acting on it
|
|
1
|
556
|
March 21, 2018
|
|
How is a submarine able to move on as well as go under water?
|
|
1
|
980
|
March 21, 2018
|
|
Give any three applications of Archimedes’ principle
|
|
1
|
2164
|
March 21, 2018
|
|
Observe the diagrams I and II carefully
|
|
1
|
491
|
March 21, 2018
|
