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During car journey the chemical energy is converted to wasted thermal energy for overcoming friction.

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Important Questions on Energy Transformations and Energy Transfers

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Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy
 _____ causes spatial damping of the sound waves.
EASY
Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy
A body is falling from a height h. After it has fallen a height h2, it will possess
MEDIUM
Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy
A body is falling from a height h. After it has fallen a height h2, it will possess:
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Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy
Total energy of an object falling freely towards earth will
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Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy
In the figure shown, a mass comes from A to C there will be
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Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy
When an object starts falling freely, then its:
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Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy
Which of these are energy efficient than filament bulb for generating light.
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Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy
Two objects with same masses have been dropped from a same height at the same time. Which of the following will remain same in case of these objects?
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Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy
A body is falling from a height h. After it has fallen a height h2, it will possess
MEDIUM
Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy
What does the law of conservation of energy convey?
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Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy
Graph is plotted between total energy of freely falling body and height. Which of the following is correct representation. 
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Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy
In order to prove the law of conservation of energy in a freely falling object, Nakul followed the steps:
A : Found P.E. at the height 'h'
B : Used v2=u2+2as and (h-s) to find total energy after a fall of 's' metre.
C : Found K.E. just at the time of landing.
The sequence of steps are :
EASY
Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy
When a body falls freely towards the earth, then its total energy.
HARD
Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy

The system is released from rest with both the spring in unstretched positions. Mass of each block is 1 kg and force constant of each spring is 10 N/m.

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In the equilibrium position, speed of the block placed horizontally is

EASY
Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy

When a body falls freely towards the earth, its total energy

EASY
Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy
When a body falls freely towards the earth, then its total energy
EASY
Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy

Energy can be changed from one form to another. It can be transferred from one object to another. Copy and complete the sentence.

The _____ tells us the function of energy which is wasted.

EASY
Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy
When an object falls freely towards the earth, then its total energy:
EASY
Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy
When an object falls freely towards the earth, then its total energy:
MEDIUM
Physics>General Physics>Energy Transformations and Energy Transfers>Conservation of Energy

For work to be performed, energy must be: