A large tank is filled to capacity with 500 gallons of pure
water. Brine containing 2 pounds o...
![subject](/tpl/images/cats/User.png)
Engineering, 17.03.2020 05:06 mackenziepaige6525
A large tank is filled to capacity with 500 gallons of pure
water. Brine containing 2 pounds of salt per gallon is pumped
into the tank at a rate of 5 gal/min. The well-mixed solution is
pumped out a rate of 10 gal/min. Find the number A(t) of pounds
of salt in the tank at time t. When is the tank empty?
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Engineering
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2
Answers: 3
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?
Answers: 3
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Assuming compressible flow of air and that the measurements are done at flagstaff a pitot static tube that gives the difference of total and static pressure measures 0.35 m of mercury. what is the velocity of air? assume the temperature to be 300k. (submit your excel or matlab calculation sheet)
Answers: 1
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:20
A3-mm-thick panel of aluminum alloy (k 177 w/m-k, c 875 j/kg-k and ? = 2770 kg/m) is finished on both sides with an epoxy coating that must be cured at or above t,-150°c for at least 5 min. the production line for the curing operation involves two steps: (1) heating in a large oven with air at ts,0-175°c and a convection coefficient of h, 40 w/m2. k, and (2) cooling in a large chamber with air at 25°c and a con- vection coefficient of he 10 w/m2.k. the heating portion of the process is conducted over a time interval te which exceeds the ime required to reach 150°c by 5 min (h = r + 300 s). the coating has an emissivity of ? = 0.8, and the temperatures of the oven and chamber walls are 175 and 25°c, respectively. if the panel is placed in the oven at an initial temperature of 25°c and removed from the chamber at a safe-to-touch tempera ture of 37°c, what is the total elapsed time for the two-step curing operation?
Answers: 3
You know the right answer?
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 15.10.2020 18:01
![question](/tpl/images/cats/himiya.png)
Chemistry, 15.10.2020 18:01
![question](/tpl/images/cats/health.png)
Health, 15.10.2020 18:01
![question](/tpl/images/cats/istoriya.png)
History, 15.10.2020 18:01
![question](/tpl/images/cats/fr.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 15.10.2020 18:01
![question](/tpl/images/cats/himiya.png)
Chemistry, 15.10.2020 18:01
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 15.10.2020 18:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
History, 15.10.2020 18:01
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 15.10.2020 18:01