Solve the following questions.

2. As shown in the figure below, a hydraulic system has two pistons of different diameter and uses a liquid of density p = 850 kg/m'. The smaller piston has a diameter of 2.7 cm and a mass of 1.6 kg and the larger piston a diameter of 14 cm and a mass of 3.3 kg. Determine h, the height difference between the two pistons.f- 3. A 1000- kg car approaches an intersection traveling north at 20.0 m/s. A 1200-kg car approaches the same. intersection traveling east at 22.0 m/s. The two cars collide at the intersection and lock together. Ignoring'agi external forces that act on the cars during the collision, what Is the velocity of the cars immediately after t? collision (magnitude and direction)? Into ice at -18. 0 C? The latent heat of fusion of water IS 3 34 x 105 J/kg The s the specic heat of Ice is 2093 J/kg K. 5. Two moles of an ideal gas are heated at constant pressur {min process. Calculate the work done by the gas