1.What is the weight of a 10-ft3 tank of oxygen if the oxygen is pressurized to 400 psia, the tank itself weighs 100 lbf, and the temperature is 700F?
2.A 1200-kg car moving at 20 km/h is accelerated ata constant rate of 4 m/s2 up to a speed of 75km/h. What are the force and total time required?