A syringe is filled with water up to volume 20cm^(3). The area of cross-section of the cylinder is5cm^(2). The syringe is held vertically and its 90gm piston is pushed upward by external agent with constant speed. A water beam coming out of the small nozzle (hole area 1mm^(2)). Neglecting friction and viscous nature of water, find the work done by the agent [in 10^(-2)] in fully emptying the syringe. (take g=10 m//s^(2))

A syringe is filled with water up to volume 20cm^(3). The area of cros

1.	A syringe is filled with water up to volume 20cm^(3). The area of cross-section of the cylinder is5cm^(2). The syringe is held vertically and its 90gm piston is pushed upward by external agent with constant speed. A water beam coming out of the small nozzle (hole area 1mm^(2)). Neglecting friction and viscous nature of water, find the work done by the agent [in 10^(-2)] in fully emptying the syringe. (take g=10 m//s^(2))
Answer» Solution :Height of water COLUMN `=20/5=4cm` MASS of water `=20gm` By work energy theorem `W_("ext")=/_\U_("piston")+/_\U_("water")+KE_("water")=8xx10^(-2)`JOULE

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