Fermi Questions C

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Re: Fermi Questions C

Post by TheChiScientist »

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
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

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TheChiScientist wrote: How many earth moons would it take to equal the mass of Jupiter?
Mass of Jupiter E27 and moon is 7E22 so E4
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

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Name wrote:
TheChiScientist wrote: How many earth moons would it take to equal the mass of Jupiter?
Mass of Jupiter E27 and moon is 7E22 so E4
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

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TheChiScientist wrote:
Name wrote:
TheChiScientist wrote: How many earth moons would it take to equal the mass of Jupiter?
Mass of Jupiter E27 and moon is 7E22 so E4
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

Post by NeilMehta »

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

Post by Unome »

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?
~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
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

Post by PM2017 »

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?
~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
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

Post by Unome »

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?
~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
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

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Unome wrote:
PM2017 wrote:
Unome wrote:
~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
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

Post by PM2017 »

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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