Concept explainers
The total world population in 2012 was about 7 billion, and Figure 2.11 shows that at that time the actual world population growth rate was about 1% per year. The figure also shows an anticipated roughly linear decrease in growth rate that extrapolates to zero growth in about the year 2080. Assuming an average growth rate of 0.5% between 2012 and 2080, what would the world population be in 2080? How does this compare with estimates discussed in the text for limits to human population?
Want to see the full answer?
Check out a sample textbook solutionChapter 2 Solutions
SUSTAINABLE ENERGY (LL)
Additional Engineering Textbook Solutions
Foundation Design: Principles and Practices (3rd Edition)
Materials for Civil and Construction Engineers (4th Edition)
Elementary Surveying: An Introduction To Geomatics (15th Edition)
Structural Analysis (10th Edition)
Structural Steel Design (6th Edition)
Elementary Surveying (14th Edition)
- The population of a country as a function of time is shown in the following table. Is the growth exponential?arrow_forward5. A population of 4 million inhabitants grows at a rate of 3% annually.Calculate the population size at the end of 5 years.arrow_forwardThe population of a particular country has a doubling time of 45 years. When will the population be three times its present value?arrow_forward
- The population of a state is 25,600 in the year 1800 and 218,900 in the year 1900. Calculate the expected population in the year 2000 if (a) the growth is linear and (b) the growth is exponential.arrow_forwardDuring the 200O Olympic Games in Sydney, Australia, the total number of medals won by Germany, Australia and China where consecutive integers. Of these countries, Germany won the fewest medals and China won the most. If the sum of the first integer, twice the second integer and four times the third integer is 409, find the number of medals won by Australia.arrow_forwardSuppose nominal GDP is $14 trillion and the money supply is $2 trillion. What is the velocity of money?arrow_forward
- What is the growth rate of a population of 1000 that has 20 births per 100 individuals, and 10 death per 100 individuals? Group of answer choices 0.20 0.30 0.10 10arrow_forward1. The population of the Philippines has doubled in the last 50 years. The population of the Philippines in 1948 was 35 million. On what year will our population triple?arrow_forwardEnvironmental Engineering, disaggregation exponential growth question: Consider the following disaggregation of carbon emissions: Carbon emissions (kg C/year)= [Population] x [Energy (kJ/year/person)] x [Carbon (kg C/Energy (kJ)] Using the following estimates for the United States and assuming growth rates remain constant, 1990 amounts: Population: 2.5 x 108, growth rate: 0.6% Energy: 3.2 x 108 kJ/yr/person, growth rate: 0.5% Carbon emissions: 1.5 x 10-5 kg C/kJ, growth rate: -0.3% Find: a) The carbon emission rate in 2020 b) The carbon emitted in those 30 years c) The total energy demand in 2020 d) the per capita carbon emission rate in 2020arrow_forward
- Question 11 The probability of T=50 year to occur within the next 30 years is?arrow_forwardWhat are the answers on these questions?arrow_forwardQuestion 39 A piece of wood board weighs 864 g and has dimensions 50 mm (tangential) x 25 mm (radial) and 1200 mm (longitudinal). What is the density of that wood piece in kg/m³? Answer:arrow_forward
- Engineering Fundamentals: An Introduction to Engi...Civil EngineeringISBN:9781305084766Author:Saeed MoaveniPublisher:Cengage Learning