Work and Energy

Work and Energy
Kinetic energy with mass ‘m’ and velocity ‘v’ is
2 mv²
1/2 mv
2m⁄v²
1/2 mv²
Author: rikazzz Comment
Work and Energy
A temperature rise in the environment that disturbs life is called
water pollution
nuclear pollution
thermal pollution
traffic pollution
Author: rikazzz Comment
Work and Energy
A form of energy given by hot bodies is called
heat energy
kinetic energy
chemical energy
nuclear energy
Author: rikazzz Comment
Everyday Science
The energy that comes from the Sun is called
thermal energy
chemical energy
solar energy
nuclear energy
Author: rikazzz Comment
Work and Energy
When a force acting on a body displaces it in the direction of a force than
uniform velocity occurs
uniform speed occurs
work is done
equilibrium take place
Author: rikazzz Comment
Work and Energy
Sunlight and water power are the sources of energy which are
renewable
very harmful
fossils
destroyable
Author: rikazzz Comment
Work and Energy
If some energy given to a system, then energy in the required form obtained is always
less than the given energy
equal to the given energy
greater than the given energy
none of above
Author: rikazzz Comment
Work and Energy
If a stone of mass 500 g strikes the ground with velocity of 20 ms^-1 then kinetic energy at that point is
10 J
40 J
75 J
100 J
Author: rikazzz Comment
Work and Energy
Fossil fuels are usually
ethanol
mercuries
potassium nitrate
hydrocarbons
Author: rikazzz Comment
Everyday Science
The energy coming directly from magma is called
mechanical energy
geothermal energy
heat energy
electrical energy
Author: rikazzz Comment

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