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State and define SI unit of power
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2
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2682
|
June 12, 2019
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Which of the following potential energy curves in figure
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1
|
2069
|
December 24, 2016
|
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A boy of mass 50 kg runs up a staircase of 45 steps in 9 s
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3
|
16658
|
January 28, 2018
|
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In an elastic collision of two billiard balls
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1
|
6015
|
December 24, 2016
|
|
State if each of the following statements is true or false
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1
|
2928
|
December 24, 2016
|
|
A trolley of mass 200 kg moves with a uniform speed
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|
1
|
3184
|
December 24, 2016
|
|
Two identical ball bearings in contact with each other
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|
1
|
1291
|
December 24, 2016
|
|
A family uses 8 kW of power
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|
1
|
1391
|
December 24, 2016
|
|
A bullet of mass 0.012 kg and horizontal speed 70 m
|
|
1
|
3261
|
December 24, 2016
|
|
The bob A of a pendulum released
|
|
1
|
1018
|
December 24, 2016
|
|
A molecule in a gas container hits a horizontal wall with speed 200 m
|
|
1
|
846
|
December 24, 2016
|
|
The casing of a rocket in flight burns up due to friction
|
|
1
|
4511
|
December 24, 2016
|
|
If momentum of a body increased by 300%, then what will be percentage increase in momentum of a body?
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|
0
|
4406
|
December 24, 2016
|
|
A vertical spring with constant 200 N/m has a light platform on its top
|
|
1
|
3457
|
December 24, 2016
|
|
A bolt of mass 0.3 kg falls from the ceiling of an elevator moving down with an uniform speed of 7 m
|
|
1
|
1595
|
December 24, 2016
|
|
A body of mass 0.3 kg is taken up an inclined plane length 10 m and height 5 m
|
|
1
|
16161
|
December 24, 2016
|
|
The sign of work done by force on a body is important to understand
|
|
1
|
3209
|
December 24, 2016
|
|
A trolley of mass 300 kg carrying a sand bag of 25 kg is moving uniformly
|
|
1
|
2938
|
December 24, 2016
|
|
In a game of tug of war, one team is slowly giving way to the other
|
|
1
|
3052
|
December 24, 2016
|
|
Find the KE of the boy of 40 kg
|
|
1
|
811
|
November 28, 2016
|
|
Why does a saw become warm when it is used to cut a log of wood?
|
|
1
|
5129
|
November 28, 2016
|
|
A girl pulls a toy with a force of 100 N
|
|
1
|
964
|
November 28, 2016
|
|
A vehicle of 1 tonne travelling with a speed of 60 m/s
|
|
1
|
6810
|
November 28, 2016
|
|
A body of mass 20 kg is raised to the top of a building
|
|
1
|
3207
|
November 28, 2016
|
|
Name two forms of mechanical energy
|
|
1
|
4649
|
November 28, 2016
|
|
Calculate the electricity bill amount for a month of April
|
|
1
|
18163
|
November 28, 2016
|
|
Describe the energy changes involved in the process
|
|
1
|
753
|
November 28, 2016
|
|
What is commercial unit of energy?
|
|
1
|
5195
|
November 28, 2016
|
|
Define kinetic energy of an object
|
|
1
|
3315
|
November 28, 2016
|
|
Discuss whether or not work is done in the following cases
|
|
1
|
3054
|
November 28, 2016
|