Consider a tank containing compressed oxygen for use at a construction site for welding beams. It...

 

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Consider a tank containing compressed oxygen for use at a construction site for welding beams. It starts out hanging above the ground from a crane. Because the tank is exposed to the sun, the gas is hotter than the surrounding air. You are on a job interview at this construction site. As it is being lowered by the crane, the lead engineer tells you that at that instant in time (lets call this the initial state) the tank is 40m above the ground and travelling at 2 m/s toward the ground. She also reports reading that at that instant for the temperature and pressure of the oxygen in the tank as 100C and 1000 kPa, respectively. She then asks you, "If we put the tank inside on the ground floor away from the sun and let it reach 25, for the oxygen in the tank, in units of kJ/kg, what is the..." A. Change in potential energy per mass between the initial state and when it reaches 25C? B. Change in kinetic energy per mass between the initial state and when it reaches 25C? C. Change in internal energy per mass between the initial state and when it reaches 25C? D. Change in total energy per mass between the initial state and when it reaches 25C? Lastly, what is the... E. Specific volume of the oxygen in the tank (units of m/kg)? Consider a tank containing compressed oxygen for use at a construction site for welding beams. It starts out hanging above the ground from a crane. Because the tank is exposed to the sun, the gas is hotter than the surrounding air. You are on a job interview at this construction site. As it is being lowered by the crane, the lead engineer tells you that at that instant in time (lets call this the initial state) the tank is 40m above the ground and travelling at 2 m/s toward the ground. She also reports reading that at that instant for the temperature and pressure of the oxygen in the tank as 100C and 1000 kPa, respectively. She then asks you, "If we put the tank inside on the ground floor away from the sun and let it reach 25, for the oxygen in the tank, in units of kJ/kg, what is the..." A. Change in potential energy per mass between the initial state and when it reaches 25C? B. Change in kinetic energy per mass between the initial state and when it reaches 25C? C. Change in internal energy per mass between the initial state and when it reaches 25C? D. Change in total energy per mass between the initial state and when it reaches 25C? Lastly, what is the... E. Specific volume of the oxygen in the tank (units of m/kg)?