Work and Energy

Work and Energy
Mechanical energy possessed by a body is of
3 types
2 types
4 types
5 types
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Work and Energy
When we raised up a hammer, the energy possessed is called
kinetic energy
chemical energy
nuclear energy
potential energy
Author: rikazzz Comment
Work and Energy
The ratio of required form of energy obtained from a system as output to the total energy given to it as input is called its
efficiency
power
stress
strain
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Work and Energy
If the direction of motion of the force is perpendicular to the direction of motion of the body, then work done will be
minimum
zero
maximum
constant
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Work and Energy
In Einstein’s mass-energy equation, c is the
speed of sound
speed of light
speed of electron
speed of Earth
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Work and Energy
The potential energy is given by
w * h
f * s
mv
ma
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Work and Energy
To heat our houses and run industry and transport, we use coal, oil and gas which are termed as
fusions
fossil fuels
chemicals
molecules
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Work and Energy
Electrical energy can be easily supplied to any desired place through
water
pipes
signals
wires
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Work and Energy
Solar energy can also be converted directly into electricity by
solar cars
mercury
plasma
solar cells
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Work and Energy
Fission and fusion are called
molecular reactions
potential reactions
nuclear reactions
heat reactions
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