C Suppose: • The vat contains 230 gallons of liquid, which never changes. ● Sugar water with a concentration of 7 tablespoons/gallon flows through pipe A into the vat at the rate of 5 gallons/minute. • Sugar water with a concentration of 3 tablespoons/gallon flows through pipe B into the vat at the rate of 25 gallons/minute. • The liquid in the vat is kept well-mixed. • Sugar water leaves the vat through pipe C at the rate of 30 gallons/minute.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Suppose:
• The vat contains 230 gallons of liquid, which never changes.
• Sugar water with a concentration of 7 tablespoons/gallon flows through pipe A into the vat at the
rate of 5 gallons/minute.
●
Sugar water with a concentration of 3 tablespoons/gallon flows through pipe B into the vat at the
rate of 25 gallons/minute.
• The liquid in the vat is kept well-mixed.
• Sugar water leaves the vat through pipe C at the rate of 30 gallons/minute.
Let S(t) represent the number of tablespoons of sugar in the vat at time t, where t is given in minutes.
(A) Write the DE model for the time rate of change of sugar in the vat:
dS
2530-35
23
X
dt
(B) Solve the differential equation to find the amount of sugar in the vat as a function of time. Your
function will have an arbitrary constant K in it. Assume that K > 0.
S(t)= 250- Ke
X
(C) Suppose that there are 22 tablespoons of sugar in the vat at t = 0. How many tablespoons will be
present 2 minutes later?
42
x tablespoons
O
# 3
3
с
14
$
%
6
&
87
7
O
*
O
✔
C
Transcribed Image Text:Suppose: • The vat contains 230 gallons of liquid, which never changes. • Sugar water with a concentration of 7 tablespoons/gallon flows through pipe A into the vat at the rate of 5 gallons/minute. ● Sugar water with a concentration of 3 tablespoons/gallon flows through pipe B into the vat at the rate of 25 gallons/minute. • The liquid in the vat is kept well-mixed. • Sugar water leaves the vat through pipe C at the rate of 30 gallons/minute. Let S(t) represent the number of tablespoons of sugar in the vat at time t, where t is given in minutes. (A) Write the DE model for the time rate of change of sugar in the vat: dS 2530-35 23 X dt (B) Solve the differential equation to find the amount of sugar in the vat as a function of time. Your function will have an arbitrary constant K in it. Assume that K > 0. S(t)= 250- Ke X (C) Suppose that there are 22 tablespoons of sugar in the vat at t = 0. How many tablespoons will be present 2 minutes later? 42 x tablespoons O # 3 3 с 14 $ % 6 & 87 7 O * O ✔ C
Consider a large vat containing sugar water that is to be made into soft drinks (see figure below).
A
B
Suppose:
• The vat contains 230 gallons of liquid, which never changes.
• Sugar water with a concentration of 7 tablespoons/gallon flows through pipe A into the vat at the
rate of 5 gallons/minute.
• Sugar water with a concentration of 3 tablespoons/gallon flows through pipe B into the vat at the
rate of 25 gallons/minute.
• The liquid in the vat is kept well-mixed.
Sugar water leaves the vat through pipe C at the rate of 30 gallons/minute.
Let S(t) represent the number of tablespoons of sugar in the vat at time t, where t is given in minutes.
(A) Write the DE model for the time rate of change of sugar in the vat:
dS
2530-35
23
X
dt
(B) Solve the differential equation to find the amount of sugar in the vat as a function of time. Your
function will have an arbitrary constant K in it. Assume that K > 0.
S(t)= 250- Ke
X
(C) Suppose that there are 22 tablespoons of sugar in the vat at t = 0. How many tablespoons will be
present 2 minutes later?
M
Transcribed Image Text:Consider a large vat containing sugar water that is to be made into soft drinks (see figure below). A B Suppose: • The vat contains 230 gallons of liquid, which never changes. • Sugar water with a concentration of 7 tablespoons/gallon flows through pipe A into the vat at the rate of 5 gallons/minute. • Sugar water with a concentration of 3 tablespoons/gallon flows through pipe B into the vat at the rate of 25 gallons/minute. • The liquid in the vat is kept well-mixed. Sugar water leaves the vat through pipe C at the rate of 30 gallons/minute. Let S(t) represent the number of tablespoons of sugar in the vat at time t, where t is given in minutes. (A) Write the DE model for the time rate of change of sugar in the vat: dS 2530-35 23 X dt (B) Solve the differential equation to find the amount of sugar in the vat as a function of time. Your function will have an arbitrary constant K in it. Assume that K > 0. S(t)= 250- Ke X (C) Suppose that there are 22 tablespoons of sugar in the vat at t = 0. How many tablespoons will be present 2 minutes later? M
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