Search found 22 matches

by talkingturtle101
August 5th, 2017, 6:34 am
Forum: 2017 Question Marathons
Topic: Fast Facts B
Replies: 173
Views: 26134

Re: Fast Facts B

Sucrose?

Human Body Part, S, L, I
by talkingturtle101
June 30th, 2017, 10:14 pm
Forum: 2017 Question Marathons
Topic: Fermi Questions C
Replies: 122
Views: 20467

Re: Fermi Questions C

Consider the partial sum of a harmonic series; that is, \sum_{n=1}^{k} \frac{1}{n} = 1 + \frac{1}{2} + \frac{1}{3} + \dots + \frac{1}{k} . What is the minimum k such that the partial sum will be above 12? My Answer|Dang, that was a good question. I have no idea how to do this mathematically, but th...
by talkingturtle101
June 29th, 2017, 8:36 pm
Forum: 2017 Question Marathons
Topic: Fermi Questions C
Replies: 122
Views: 20467

Re: Fermi Questions C

How many watermelons would fit in the South China Sea? Attempt|- Watermelon has a volume of around 10 liters - South China sea has around E11 liters of water - Fermi Answer of 10. Actual Answer|- An average watermelon weighs 20 pounds-ish, or 9,071 grams. - According to [url]http://www.aqua-calc.co...
by talkingturtle101
June 26th, 2017, 6:08 pm
Forum: 2017 Question Marathons
Topic: Fermi Questions C
Replies: 122
Views: 20467

Re: Fermi Questions C

How many complete orbits around its parent star would HAT-P-11b, a "Hot Neptune", make in the time it takes for the average human to run 5 miles without stopping? Complete Orbits?|- I've never heard of it, but it seems like planets of that size wouldn't be too close to their star. So say ...
by talkingturtle101
June 24th, 2017, 2:25 pm
Forum: 2017 Question Marathons
Topic: Fermi Questions C
Replies: 122
Views: 20467

Re: Fermi Questions C

Nice Question|- Earth formed 4.6 billion years ago, or 5E9 - It could probably go 1000 kph, or 1E3. - The Earth is around 40000 km in circumference, because light can go around it 7 times per second. This is 4E4. - There's around 8,000 hours in a year, so the earth is 4E13 hours old. - So it would ...
by talkingturtle101
June 23rd, 2017, 1:23 pm
Forum: 2017 Question Marathons
Topic: Fast Facts B
Replies: 173
Views: 26134

Re: Fast Facts B

NeilMehta wrote: Disease - H
Disease, H - Hepatitis

Fruit, D
Nobel Laureate in Physics, M
Chemist, B
Cell Organelle, C
by talkingturtle101
June 23rd, 2017, 1:18 pm
Forum: 2017 Question Marathons
Topic: Fermi Questions C
Replies: 122
Views: 20467

Re: Fermi Questions C

My Answer|- I remember reading somewhere that you could draw a line for 40 miles-ish with one pencil. - The English Channel might be 20 miles wide at its narrowest. So dividing gives 2, Fermi Answer of 0? Actual Answer|- Google says you could draw a line for 35 miles. - At it's narrowest, it's 20.9...
by talkingturtle101
June 21st, 2017, 10:07 pm
Forum: 2017 Question Marathons
Topic: Fast Facts B
Replies: 173
Views: 26134

Re: Fast Facts B

Poisonous Plant, N - Nightshade
Constellation, V - Virgo
Chemist, M - Dmitri Mendeleev

Protein, R?
by talkingturtle101
June 16th, 2017, 12:16 pm
Forum: 2017 Question Marathons
Topic: Fermi Questions C
Replies: 122
Views: 20467

Re: Fermi Questions C

Unome wrote: Btw we need a question to answer :)
Whoops I forgot. During the time it takes Tchaikovsky's 1812 Overture to play, how many times could light go from the Earth to the moon?
by talkingturtle101
June 12th, 2017, 5:24 pm
Forum: 2017 Question Marathons
Topic: Fermi Questions C
Replies: 122
Views: 20467

Re: Fermi Questions C

Bringing this thread back. My Answer|- It would maybe take 500 J of energy to lift a person 1 foot off the ground. - A fan from a desktop could maybe provides 0.1 J, so Fermi Answer of 3 Actual Answer|- It takes 1.36 J to lift one pound one foot off the ground. So if a person weighs 150 pounds, this...

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