The U - tube shown has a uniform cross -...

The U - tube shown has a uniform cross - section. A liquid is filled in the two arms up to heights `h_(1) and h_(2)`, and then the liquid is allowed to move. Neglect ciscosity and surface tension. When the levels equalize in the two arms, the liquid will

be at rest

be moving with an acceleration of `g((h_(1)-h_(2))/(h_(1)+h_(2)+h))`

be moving with a velocity of `(h_(1)-h_(2))sqrt((g)/(2(h_(1)+h_(2)+h)))`

exert a net force to the right on the tube

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