A300 mm diameter rigid cylinder contains 800 mm depth of water at the bottom, 500 mm depth of oil above the water and 200 mm of atmospheric air on top. if the air pressure is slowly increased to 1 mpa, gage, how much downward movement will occur in the air-oil interface? the values of bulk modulus are: 2050 mn/m2 for oil and 2075 mn/m2 for water.

A)-in the process of engineering design, explain the contribution of material selection. b)- explain the procedure of synthesis as is employed in engineering design. c)- is there any relationship between ergonomics and engineering design? explain. d)- safety consideration in engineering design includes human, product and the enviroment . explain how safety will be incorporated into the design?