1.A barge is 60ft long, 20ft wide, and 8ft deep. When empty, it weighs 210,000lb, and its center of gravity is 1.5ft above the bottom. Is it stable when floating in water?
2.A mixture containing 45 wt% benzene and 55 wt% toluene is fed to a distillation column. An overhead stream of 95 wt% benzene is produced, and 8.0 % of the benzene fed to the column leaves in the bottom stream. The feed rate is 2,000 kg/hr. Determine the overhead mass flow rate and mass flow rates of benzene and toluene in the bottom stream. What is the molar flow rate of the feed stream to the column?
3.You are hitting a nail with a hammer (mass of hammer =1.8lb) the initial velocity of the hammer is 50 mph (73.33 ft/sec). The time of impact is .023 sec. Assuming the nail heads directly in the -j direction, what is the magnitude of the force exerted on the hammer from the nail?