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mylen [45]
4 years ago
8

A newly constructed fish pond contains 1000 liters of water. Unfortunately the pond has been contaminated with 5 kg of a toxic c

hemical during the construction process. The pond's filtering system removes water from the pond at a rate of 200 liters/minute, removes 70% of the chemical, and returns the same volume of (the now somewhat less contaminated) water to the pond. Write a differential equation for the time (measured in minutes) evolution of:'

Mathematics
1 answer:
Airida [17]4 years ago
4 0

Answer:

The question has some other details missing, but here are the details ;

Write a differential equation for the time (measured in minutes) evolution of:

a) The total mass (in kilograms) of the chemical in the pond dm/dt =

b) The concentration (in kg/liter) of the chemical in the pond: dc/d t=

c) The concentration (in grams/liter) of the chemical in the pond: dc/dt =

d) The concentration (in grams/liter) of the chemical in the pond, but with time measured in hours: dc/dt =

Step-by-step explanation:

The detailed steps from first principle and the solution of each differential equation is as shown in the attached file.

starting from Concentration = mass/volume ; mass = volume x concentration, and then find the differential of both sides to generate the solved differential equation.

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Explanation:

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3 years ago
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lisabon 2012 [21]

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2 years ago
Help me to do this math question ​
viva [34]

Answer:

b) q

c) 7a

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Step-by-step explanation:

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3 years ago
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What is the measure of ∠ADC in quadrilateral ABCD?
Andreyy89

we know that

The quadrilateral ABCD is a isosceles trapezoid. The properties of the isosceles trapezoid are as follows:

-The lower base angles are congruent.



So

m∠A=m∠D

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m∠D+m∠C=180°

therefore

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<u>the answer is</u>

The measure of angle ADC is 115°

4 0
3 years ago
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Today: Tuesday, 12th January 2021

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