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Author Question: If the population of a country doubles every 25 years, a 1980 population of 10 million will reach 80 ... (Read 79 times)

CharlieWard

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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

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Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

A


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CharlieWard

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Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


Ksh22

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Reply #3 on: Jul 28, 2018
Great! Please up vote :D


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