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A hydraulic lift is used to jack a 870kg car 12 cm off the floor. Thediameter of the output piston is 18 cm, and the input force is 250N.
(a) What is the area of the input piston?
m2
The work done by an external force to move a 6.50 uC charge from point a to point b is 0.0240 J. The charge started from rest, Find the potential difference, Vba between points
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