Fermi Questions Marathon

[hmcginny]

So to Lily's question, lets say there are E6 manuals and field guides printed and you can print E2 from each tree, so E4 trees are used in the production. Each tree produces maybe E3 moles of oxygen an hour. Lets say each tree would live for another E2 years so thats +E4 moles per day and E7 per year, so E9 moles of oxygen per tree and E13 moles of oxygen total. That could be totally off, I have no idea how much oxygen they actually produce.

How many domesticated cats and dogs are there in the world?

[coolio12]

These questions are all quite interesting...

How many pennies would fit inside of an Olympic-sized swimming pool?

[Angstrom]

One per person sounds about right - for the Western world. In other parts of the world, other animals are more popular (goats, horses, etc.) - this making the global average less than 5/7 per person, making it 1 billion is E9. I defer coolio's question to someone else because I tire of fantasy size fillings.

[OldSpice]

Assumed dimensions of pool: 50m x 50m x 5m
Volume: E4 cubic meters
I know a roll of pennies (50 pennies) is about 10 centimeters long by a centimeter wide: E1 cubic centimeters
E6 cubic centimeters per cubic meter.
5E6 pennies per cubic meter

E10 pennies would fill an olympic swimming pool.

What fraction of the US land area is paved?

[hmcginny]

ok so the US is around E6 square miles and thus E12 square meters. but none of that really even matters because with all the highways and stuff I would guess that at least .5% of the area is covered so -2. If anything, that number might be a little high.

How many seconds ago did the Jurassic Period end?

[OldSpice]

ok so the US is around E6 square miles and thus E12 square meters. but none of that really even matters because with all the highways and stuff I would guess that at least .5% of the area is covered so -2. If anything, that number might be a little high.

How many seconds ago did the Jurassic Period end?

The Jurassic Period was about E8 years ago, and there's about E7 seconds in a year, so about E15 seconds.

How many crayons are produced per year in the world?

[hmcginny]

ok so production=consumption and crayons are primarily used by children. There are 7E9 people in the world and probably around -E9 kids who use crayons. Each kid probably uses E1 crayons per year so E10 crayons produced per year. The fact that some use closer to E2 is insignificant because there is a large portion who don't use them at all/don't have access to them.

How many clocks are there in New York City?

[cngu23]

ok so production=consumption and crayons are primarily used by children. There are 7E9 people in the world and probably around -E9 kids who use crayons. Each kid probably uses E1 crayons per year so E10 crayons produced per year. The fact that some use closer to E2 is insignificant because there is a large portion who don't use them at all/don't have access to them.

How many clocks are there in New York City?

Population in new york is like 1E7
Each person has at least 2 clock
So there are 2E7 clocks in NYC

How many essays are written each day by students in high schools across the United States?

[quizbowl]

ok so production=consumption and crayons are primarily used by children. There are 7E9 people in the world and probably around -E9 kids who use crayons. Each kid probably uses E1 crayons per year so E10 crayons produced per year. The fact that some use closer to E2 is insignificant because there is a large portion who don't use them at all/don't have access to them.

How many clocks are there in New York City?

Population in new york is like 1E7
Each person has at least 2 clock
So there are 2E7 clocks in NYC

How many essays are written each day by students in high schools across the United States?

I remember there being 1.5E7 high school students in America, and I'd say on average they'd write maybe 3 in a week, so thats about (3/5) per student per day, so I'd say 7.

How many pounds of peanut butter would it take to cover the entire floor of the Grand Canyon?

[cngu23]

ok so production=consumption and crayons are primarily used by children. There are 7E9 people in the world and probably around -E9 kids who use crayons. Each kid probably uses E1 crayons per year so E10 crayons produced per year. The fact that some use closer to E2 is insignificant because there is a large portion who don't use them at all/don't have access to them.

How many clocks are there in New York City?

Population in new york is like 1E7
Each person has at least 2 clock
So there are 2E7 clocks in NYC

How many essays are written each day by students in high schools across the United States?

I remember there being 1.5E7 high school students in America, and I'd say on average they'd write maybe 3 in a week, so thats about (3/5) per student per day, so I'd say 7.

How many pounds of peanut butter would it take to cover the entire floor of the Grand Canyon?

I'd say the volume of the GC is about 4E10 square meters?
One pound of peanut butter is like 5E-3 square meters

So its like 8E12 pounds

How many math problems are done each day by students in the United States? (elementary, middle, high) school