Fermi Questions C

Test your knowledge of various Science Olympiad events.
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Re: Fermi Questions C

Postby TheChiScientist » May 2nd, 2018, 12:52 pm

Attempt
Given how the moon normally raises tides by 5ft? I would guess that as more mass is added the more the raise goes by. Not doing any "real" math here but logic tells me it would be 100+ times as Fort Collins is above sea level? Final fermi answer 1.8x10^3

Answer
I presume that the more moons you add it would increase by 16.5 meters and Fort Collins is 1525 meters above sea level then it would take about 91 moons thus a fermi answer of 1x10^3 if you round up. :)

How many earth moons would it take to equal the mass of Jupiter?
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Re: Fermi Questions C

Postby Name » May 2nd, 2018, 1:34 pm

TheChiScientist wrote:How many earth moons would it take to equal the mass of Jupiter?


Attempt
Mass of Jupiter E27 and moon is 7E22 so E4


Answer
Jupiter's mass is closer to 2E27 but same answer E4


What is the Gravitational attraction of the moon and Jupiter
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Re: Fermi Questions C

Postby TheChiScientist » May 2nd, 2018, 2:12 pm

Name wrote:
TheChiScientist wrote:How many earth moons would it take to equal the mass of Jupiter?


Attempt
Mass of Jupiter E27 and moon is 7E22 so E4


Answer
Jupiter's mass is closer to 2E27 but same answer E4


What is the Gravitational attraction of the moon and Jupiter

Earth moon I pressume? :?:
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Re: Fermi Questions C

Postby Name » May 2nd, 2018, 2:13 pm

TheChiScientist wrote:
Name wrote:
TheChiScientist wrote:How many earth moons would it take to equal the mass of Jupiter?


Attempt
Mass of Jupiter E27 and moon is 7E22 so E4


Answer
Jupiter's mass is closer to 2E27 but same answer E4


What is the Gravitational attraction of the moon and Jupiter

Earth moon I pressume? :?:


Yes
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Re: Fermi Questions C

Postby NeilMehta » May 4th, 2018, 11:21 am

Since no one has posted a question, I guess I'll go ahead:

What percent of all deaths in history have been caused by shark attacks?
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Re: Fermi Questions C

Postby Unome » May 4th, 2018, 11:52 am

NeilMehta wrote:Since no one has posted a question, I guess I'll go ahead:

What percent of all deaths in history have been caused by shark attacks?

Attempt
~9e10 deaths in all of history. Annual deaths are ~e7 of which perhaps ~e2 (probably less than by a bit) die of shark attacks each year, so e-5 of the population dies of shark attacks - extrapolate to get Fermi Answer: 5

Actual
The actual proportion of current deaths caused by shark attacks is ~1.3e-6, so multiplying that by a total deceased population of ~101 billion yields ~1.3e5 so Fermi Answer: 5

How many more people are diagnosed with esophageal cancer each year in the US than are diagnosed with mesothelioma?
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Re: Fermi Questions C

Postby PM2017 » May 4th, 2018, 12:34 pm

Unome wrote:
NeilMehta wrote:Since no one has posted a question, I guess I'll go ahead:

What percent of all deaths in history have been caused by shark attacks?

Attempt
~9e10 deaths in all of history. Annual deaths are ~e7 of which perhaps ~e2 (probably less than by a bit) die of shark attacks each year, so e-5 of the population dies of shark attacks - extrapolate to get Fermi Answer: 5

Actual
The actual proportion of current deaths caused by shark attacks is ~1.3e-6, so multiplying that by a total deceased population of ~101 billion yields ~1.3e5 so Fermi Answer: 5

How many more people are diagnosed with esophageal cancer each year in the US, compared to those diagnosed with mesothelioma?

How can you get anything more than 2 for a percentage?
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Re: Fermi Questions C

Postby Unome » May 4th, 2018, 3:28 pm

PM2017 wrote:
Unome wrote:
NeilMehta wrote:Since no one has posted a question, I guess I'll go ahead:

What percent of all deaths in history have been caused by shark attacks?

Attempt
~9e10 deaths in all of history. Annual deaths are ~e7 of which perhaps ~e2 (probably less than by a bit) die of shark attacks each year, so e-5 of the population dies of shark attacks - extrapolate to get Fermi Answer: 5

Actual
The actual proportion of current deaths caused by shark attacks is ~1.3e-6, so multiplying that by a total deceased population of ~101 billion yields ~1.3e5 so Fermi Answer: 5

How many more people are diagnosed with esophageal cancer each year in the US, compared to those diagnosed with mesothelioma?

How can you get anything more than 2 for a percentage?

I've reworded my question to make it more clear.
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Re: Fermi Questions C

Postby Name » May 4th, 2018, 3:48 pm

Unome wrote:
PM2017 wrote:
Unome wrote:
Attempt
~9e10 deaths in all of history. Annual deaths are ~e7 of which perhaps ~e2 (probably less than by a bit) die of shark attacks each year, so e-5 of the population dies of shark attacks - extrapolate to get Fermi Answer: 5

Actual
The actual proportion of current deaths caused by shark attacks is ~1.3e-6, so multiplying that by a total deceased population of ~101 billion yields ~1.3e5 so Fermi Answer: 5

How many more people are diagnosed with esophageal cancer each year in the US, compared to those diagnosed with mesothelioma?

How can you get anything more than 2 for a percentage?

I've reworded my question to make it more clear.


A percentage goes up to 100 percent... You can't have 130,000 percent of all deaths be from sharks. E5 is the total deaths/E11 which is -6 or as a percentage -4. Also sources I saw online said the rates of deaths were slightly lower so possibly -5
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Re: Fermi Questions C

Postby PM2017 » May 4th, 2018, 4:00 pm

Name wrote:
Unome wrote:
PM2017 wrote:How can you get anything more than 2 for a percentage?

I've reworded my question to make it more clear.


A percentage goes up to 100 percent... You can't have 130,000 percent of all deaths be from sharks. E5 is the total deaths/E11 which is -6 or as a percentage -4. Also sources I saw online said the rates of deaths were slightly lower so possibly -5

This is a more coherent version of what I was saying.
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Re: Fermi Questions C

Postby Unome » May 4th, 2018, 4:09 pm

PM2017 wrote:
Name wrote:
Unome wrote:I've reworded my question to make it more clear.


A percentage goes up to 100 percent... You can't have 130,000 percent of all deaths be from sharks. E5 is the total deaths/E11 which is -6 or as a percentage -4. Also sources I saw online said the rates of deaths were slightly lower so possibly -5

This is a more coherent version of what I was saying.

Oh I thought it was about my question. What was wrong with my answer? I ended up with ~1/100,000 deaths are from shark attacks and extrapolated from there.
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Re: Fermi Questions C

Postby PM2017 » May 4th, 2018, 4:10 pm

Unome wrote:
PM2017 wrote:
Name wrote:
A percentage goes up to 100 percent... You can't have 130,000 percent of all deaths be from sharks. E5 is the total deaths/E11 which is -6 or as a percentage -4. Also sources I saw online said the rates of deaths were slightly lower so possibly -5

This is a more coherent version of what I was saying.

Oh I thought it was about my question. What was wrong with my answer? I ended up with ~1/100,000 deaths are from shark attacks and extrapolated from there.

Well the question wasn't how many deaths are caused by sharks, so you went too far.
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Re: Fermi Questions C

Postby Name » May 4th, 2018, 4:17 pm

Unome wrote:
PM2017 wrote:
Name wrote:
A percentage goes up to 100 percent... You can't have 130,000 percent of all deaths be from sharks. E5 is the total deaths/E11 which is -6 or as a percentage -4. Also sources I saw online said the rates of deaths were slightly lower so possibly -5

This is a more coherent version of what I was saying.

Oh I thought it was about my question. What was wrong with my answer? I ended up with ~1/100,000 deaths are from shark attacks and extrapolated from there.


The question specifically asked for percentage. According to Google it's 1/3,748,067 or about 3E-7 not E-5 (though sources do change I don't realistically think it's as high as E-5).
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Re: Fermi Questions C

Postby Unome » May 4th, 2018, 4:19 pm

Name wrote:
Unome wrote:
PM2017 wrote:This is a more coherent version of what I was saying.

Oh I thought it was about my question. What was wrong with my answer? I ended up with ~1/100,000 deaths are from shark attacks and extrapolated from there.


The question specifically asked for percentage. According to Google it's 1/3,748,067 or about 3E-7 not E-5 (though sources do change I don't realistically think it's as high as E-5).

oh darn...

Edit:
Unome wrote:How many more people are diagnosed with esophageal cancer each year in the US than are diagnosed with mesothelioma?
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Re: Fermi Questions C

Postby PM2017 » May 4th, 2018, 9:00 pm

Unome wrote:
Name wrote:
Unome wrote:Oh I thought it was about my question. What was wrong with my answer? I ended up with ~1/100,000 deaths are from shark attacks and extrapolated from there.


The question specifically asked for percentage. According to Google it's 1/3,748,067 or about 3E-7 not E-5 (though sources do change I don't realistically think it's as high as E-5).

oh darn...

Edit:
Unome wrote:How many more people are diagnosed with esophageal cancer each year in the US than are diagnosed with mesothelioma?

attempt
Both seem to types of cancers, (-oma signifies cancer) but since I haven't heard of mesothelioma, I would say its rarer. I would think that not more than e5 people are diagnosed with esophageal cancer in the US per year because any higher and you get a significant portion of the population. And I wouldn't think that this other type of cancer occurs less than e3 to e4 types per year. I feel like my initial e5 for esophageal cancer was a bit high, so I'm going to choose 1 instead of 2 as my final answer.


Actual
200,000 people are diagnosed by esophageal cancer in the US annually, and 20,000 with mesothelioma which works out rather smoothly, to a fermi answer of 1


I don't know if you'll be able to verify an answer to this question later, but here goes anyways:
If I had as many copies of the Beowulf, Heaney translation, as would be as long as all the forums posts made on this website since 2008, how much would they weigh? (assume all the books are paperback)
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