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1.If atmospheric pressure is 1.013 x 105 N/m2 and creates a column of mercury 760 mm...

1.If atmospheric pressure is 1.013 x 105 N/m2 and creates a column of mercury 760 mm high. What is the density of mercury in kg/m3 ?

No units needed.

2.A car jack works when a mechanic uses a force 1.5 N, on a small piston of radius 6 cm. What force can he exert on a larger piston of radius 0.39 m ?

3If atmospheric pressure is 1.013 x 105 N/m2 , what height of water in meters would it create ?   remember density of water is 1000 kg/m3.

No units needed.

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