Answered: Solve the Application of Differential…

Engineering

Civil Engineering

Solve the Application of Differential Equations

Sustainable Energy

2nd Edition

ISBN:9781337551663

Author:DUNLAP, Richard A.

Publisher:DUNLAP, Richard A.

Chapter2: Past, Present, And Future World Energy Use

Section: Chapter Questions

Problem 6P: The total world population in 2012 was about 7 billion, and Figure 2.11 shows that at that time the...

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Concept explainers

Quantity takeoff

Quantity takeoffs (QTO) are precise estimates of the materials and labor costs required to finish a construction project. During the pre-construction phase, an estimator prepares them, breaking down the project into smaller, more manageable parts that are easier to evaluate. These measurements are used to prepare a construction scope bid. Estimators examine the drawings, specifications, and models to figure out different quantities and their costs. Since, the components, their quantity, and price are all included in the model, quantity take-off can be done automatically using Building Information Modelling (BIM). The time taken for completing a construction project can be reduced by the use of quantity takeoff. These takeoffs are also called material takeoffs and construction takeoffs.

Question

Subject: DIFFERENTIAL EQUATIONS Solve the Application of Differential Equations The population in the United States of America was 2460 Million in 1950 and 3040 Million in 1960 to model the population of the world in the second half of the 20th Century. (Assume that the growth rate is proportional to the population size.) What is the relative growth rate k? Use the model to estimate the world population in 1993 and to predict in this year 2020.

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