PLEASE HELP they relate
2 - What force must be exerted on the master cylinder of a hydraulic lift to support the weight of a 1200-kg car resting on the slave cylinder? The master cylinder has a 3.00-cm diameter and the slave has a 32.0-cm diameter. A) 220 N B) 136 N C) 250 N D) l03 N
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QUESTION18
4(a) - Calculate the buoyant force on a 1.5x10-3 m3 hydrogen balloon. Air density is 1.22 kg/m3 and hydrogen density is 0.1 kg/m3 A) 2.5x10-2 N B) 3.1x10-2 N C) 1.8x10-2 N D) 0.5x1o-2 N