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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
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1
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42479
|
February 29, 2024
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Calculate the number of aluminium ions (Al3+) in 0.056 g of alumina (AL203)
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1
|
9815
|
July 3, 2020
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What is Physics,Chemistry and Biology?
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1
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1200
|
July 17, 2019
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What is the valency of argon
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1
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743
|
June 24, 2019
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Compare the properties of electrons,protons and neutrons
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1
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1183
|
June 18, 2019
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Can you please suggest me a science project(a working model) related to physics
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1
|
1118
|
June 17, 2019
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Explain the three zones of a flame by taking the example of candle flame
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1
|
3091
|
June 17, 2019
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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?
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1
|
5563
|
September 17, 2018
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Figure shows a conveyor belt transporting a package to a raised platform. The belt is driven by a motor
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0
|
13693
|
March 21, 2018
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|
Four men lift a 250 kg box to a height of 1 m and hold it without raising or lowering it
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0
|
3640
|
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
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0
|
1872
|
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
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0
|
10299
|
March 21, 2018
|
|
Briefly describing the gravitational potential energy
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0
|
3398
|
March 21, 2018
|
|
A body thrown at a certain angle to the ground moves in a curved path and falls back to the ground
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0
|
1487
|
March 21, 2018
|
|
Two workmen are employed on a building project, as shown in figure
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0
|
11836
|
March 21, 2018
|
|
Figure shows, in order, five stages of an athlete successfully performing a pole-vault
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0
|
5753
|
March 21, 2018
|
|
Give one example of each of the following: Small mass but high kinetic energy
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0
|
4934
|
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
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0
|
4847
|
March 21, 2018
|
|
The velocity of a body moving in a straight line is increased by applying a constant force
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0
|
5087
|
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
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0
|
3421
|
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?
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0
|
1837
|
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?
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|
0
|
3770
|
March 21, 2018
|
|
State and explain the experiment for verification of Archimedes’ principle. Name the devices based on Archimedes’ principle
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|
0
|
16566
|
March 21, 2018
|
|
Derive an expression for kinetic energy of an object
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0
|
46960
|
March 21, 2018
|
|
What types of energy transformation takes place in the following:
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0
|
8211
|
March 21, 2018
|
|
Loaded test-tube placed in pure milk sinks to a certain mark (M)
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0
|
1588
|
March 21, 2018
|
|
Give three examples when the object is not displaced in spite of a force acting on it
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|
0
|
4068
|
March 21, 2018
|
|
How is a submarine able to move on as well as go under water?
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|
0
|
1970
|
March 21, 2018
|
|
Give any three applications of Archimedes’ principle
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|
0
|
4160
|
March 21, 2018
|
|
Observe the diagrams I and II carefully
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|
0
|
11657
|
March 21, 2018
|