|
What is meant by transformation of energy?
|
|
1
|
1880
|
November 28, 2016
|
|
The human heart does 1.5 J of work in every beat
|
|
1
|
4943
|
November 28, 2016
|
|
A mass of 20 kg is dropped from a height of 5 m
|
|
1
|
1017
|
November 28, 2016
|
|
The power of a motor pump is 60 W
|
|
1
|
2972
|
November 28, 2016
|
|
The power of a motor pump is 5 kW
|
|
1
|
3085
|
November 28, 2016
|
|
A child drops a stone of 1 kg from the top of a tower
|
|
1
|
4058
|
November 28, 2016
|
|
How is work done by a force measured?
|
|
1
|
2301
|
November 28, 2016
|
|
Given below are-a few situations
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|
1
|
2045
|
November 28, 2016
|
|
Why do we say that a lift delivers more power
|
|
1
|
1135
|
November 28, 2016
|
|
When an arrow is shot, from where does the arrow acquire its kinetic energy?
|
|
0
|
3965
|
November 28, 2016
|
|
Calculate the total energy consumed
|
|
1
|
555
|
November 28, 2016
|
|
Find the ratio of their kinetic energies
|
|
1
|
1075
|
November 28, 2016
|
|
Find the work done by porter on the luggage
|
|
1
|
859
|
November 28, 2016
|
|
Seema tried to push a heavy rock of 100 kg for 200 s but could not move it
|
|
1
|
3865
|
November 28, 2016
|
|
A man holding a bucket of water on his head stands stationary
|
|
1
|
3276
|
November 28, 2016
|
|
At the bottom of the waterfall, water is warmer than at the top. Give reason
|
|
0
|
1382
|
November 28, 2016
|
|
A coolie lifts a box of 15 kg from the ground to a height of 2 m
|
|
1
|
5549
|
November 28, 2016
|
|
Define potential energy
|
|
1
|
1679
|
November 28, 2016
|
|
A boy lifts a suitcase of 20 kg from the ground to a height of 1.2 m
|
|
1
|
2994
|
November 28, 2016
|