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A vertical U-tube of unifom inner cross-section contains
mercury
both the area. A glycerin (P² 1.3 g/cm3].
column
of length in 10cm is introduced into one
of the arm oil of density 0.8 g/cm3 is poured into the other
arm untill
the upper surfaces of the oil
and glycerin are in the same horizontal level. find
the length of
the oil column
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Explanation:
A rectangular object of mass 6 kg is taken to a height of 20 m from the ground.
Calculate the potential energy gained by this object. Take g = 10 m/s?.
Show three different paths through which the object can be taken to this height. Also
calculate the potential energy for all these three paths and write your conclusion.
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