« previous next »

Author Question: If the population of a country doubles every 25 years, a 1980 population of 10 million will reach 80 ... (Read 89 times)

CharlieWard

  • Hero Member
  • *****
  • Posts: 578
on: Jul 28, 2018
If the population of a country doubles every 25 years, a 1980 population of 10 million will reach 80 million in the year
 
  a. 2005.
  b. 2030.
  c. 2055.
  d. 2080.
  e. 2105.

Question 2

Suppose that we allowed each person 1000 m3 of living space in a large building, with ceiling height 3 m.
 
  To the nearest order of magnitude, how many 1000 m high
  buildings would have to be built to house the entire population of 8.5 x 1014 people on the
  energy-limited Earth if each building's base were 100 km on a side?
  a. 101
  b. 102
  c. 105
  d. 108
  e. 1013


Ksh22

  • Sr. Member
  • ****
  • Posts: 297
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

CharlieWard

  • Hero Member
  • *****
  • Posts: 578
Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


Ksh22

  • Sr. Member
  • ****
  • Posts: 297
Reply #3 on: Jul 28, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth
After the Eruption of Mount St. Helens in 1980 After the Eruption of Mount St. Helens in 1980
Midway Island, an inhospitable atoll acquired in 1867, was valuable as a military base located midwa Midway Island, an inhospitable atoll acquired in 1867, was valuable as a military base located midwa
Race-Ethnicity of the U.S. Population Race-Ethnicity of the U.S. Population
Population Density Population Density
Time vs. USA Population Exponential Time vs. USA Population Exponential
Video: Structures that affect circulation - kidneys, blood volume and venous tone

For a complete list of videos, visit our video library