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CBSE Notes 2011-2012 » IX-Science-Term2

Work and Energy

An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass is 3.5 kg. Both sp...

Multiple choice question

An iron sphere of mass 10 kg has the same diameter
as an aluminium sphere of mass is 3.5 kg. Both
spheres are dropped simultaneously from a tower.
When they are 10 m above the ground, they have
the same

A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a levelled road. The wor...

Multiple choice question

A girl is carrying a school bag of 3 kg mass on her
back and moves 200 m on a levelled road. The work
done against the gravitational force will be
(g = 10 ms_2)

Which one of the following is not the unit of energy ?

Multiple choice question

Which one of the following is not the unit of energy ?

The work done on an object does not depend upon the

Multiple choice question

The work done on an object does not depend upon the

Water stored in a dam possesses

Multiple choice question

Water stored in a dam possesses

An elevator with load, weighing 500 kg is moving up with a velocity of 0.2 ms-1, The power of the mo...

Multiple choice question

An elevator with load, weighing 500 kg is moving
up with a velocity of 0.2 ms-1, The power of the
motor in horse power is (1 H.P. = 746 watt)

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