For each of the following application problems, set up an initial value problem that would model the situation. you must then solve exactly one of the ivps for (b), (c), or (d), and answer the accompanying question. (a) a 400-gal tank is initially filled with brine (salt-water mixture) containing 50 lb of salt. brine containing 1 lb of salt per gallon enters the tank at the rate of 5 gal/s, and the well-mixed brine in the tank flows out at the same rate. find the amount (t) of salt in the tank at time t. (b) a 250-gal tank is initially filled with brine (salt-water mixture) containing 100 lb of salt. brine containing 3 lb of salt per gallon enters the tank at the rate of 7 gal/s, and the well- mixed brine in the tank flows out at the rate of 9 gal/s. find the amount (t) of salt in the tank after 1 minute.
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Physics, 22.06.2019 06:00
What are atoms of the same element with varying number of neutrons
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An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.
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Physics, 23.06.2019 02:20
Aman is trying to drag a small tree that he cut down. if the static coefficient of friction of the tree on the ground is 0.5 and the tree weighs 670 n, what is the minimum amount of horizontal force that the man will need to apply so that the tree will start moving? o a. 465 n o b. 230 n o c. 670 n o d. 335 n
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For each of the following application problems, set up an initial value problem that would model the...
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