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Homework Statement Compress air vessel has a volume of 10 ft3 .Cooling coils holds its temperature at 68F. The pressure now in the vessel is 100 psi. Air is flowing in at the rate of 10 lbm/hr.How fast is the pressure increasing? The Attempt at a Solution What I have done is...

another attempt Suppose the concentration at time t is c(t) so c(0)=10kg/m3 . You have c ′ (t)=(−10m 3 /min) /1000m 3 c(t) so c(t)=ke(−t/100) for some constant k and from the starting condition k=10kg/m 3 so c(t)=10e(−t /100 )kg/m 3. :smile:

finally i have done Every minute we remove 1% of the salt. So the concentration at t minutes is (0.99^t)*(10 kg/m^3). if anyone can give another solution pls post

can you give me the equation? Because this question was given by my fluid teacher

ok what i have done is that: when 10m3/min fresh water entered into tank 10 m3/min of mixture leaves the tank now in 1 minute 100 kg of salt is being removed from the tank so conc. of effluent is 10kg of salt/m3 in 1 minute, in 2 min it 9.9 kg/m3 of salt and decreases approx 0.1 after every...

drain problem? Homework Statement A tank has 1000 m3 of salt solution. The salt concentration is 10 kg/m3. At time zero, salt-free water starts to flow into the tank at a rate of 10 m3/min. Simultaneously salt solution flows out of the tank at 10 m3/min, so that the volume of the solution...