Tuesday, March 9, 2010

Thoughts of Tuesday

Looks like I'm going to Johns Hopkins Bloomberg School of Public Health for my MHS! When I'm not learning how to solve the world's health crisis, you can find me in the streets singing Hairspray...

"Good morning Baltimore
And some day when I take to the floor
The world's gonna wake up and see
Baltimore and me!!!!"

I'm pretty thrilled :-)

Kat sent me this picture:

A couple links:
http://www.dailymail.co.uk/news/article-1255187/Ruling-roost-Hen-thinks-dog-adopts-litter-puppies.html

http://www.marcandangel.com/2010/02/08/29-semi-productive-things-i-do-online/

I play this with my 2nd grader Fabian at the end of tutoring:
http://www.lumosity.com/brain-games/attention-games/lost-in-migration
He hasn't figured out yet that the whole point is to help him be less distracted.
High score: 970.

AV Lent reflections: http://osavol.org/Lent_10/Reflections.html

Conan's daily tweets have become a daily event I eagerly await.
Favorite tweet: "If anyone's curious what I look like with a beard, it's this ?:^(0) Coincidentally, that's also my ATM pin number."

Things I need help with:
1) I'm still working on my plan to get Jack the black lab down the street. I daydream about it often. That reminds me... last week I got his tennis ball accidentally stuck in a short palm tree and he freaked out about it for a good 5 or 6 minutes until he got it down.. it was so funny and sad. Anyway, so far, the only thing I came up with is to leave a note saying I'd take him for walks and stuff... which would then obviously lead to them giving him to me. It's chafa. Any other ideas?

2) Starbucks doesn't carry Tazo Wild Sweet Orange Tea anymore. Where can I find it?

3) A Sporcle quiz got me thinking about ways the world could end. If the world stopped on its axis, would we keep moving (that's a funny image slash horrible), or would gravity keep us on earth? I could be wrong, but I think we're moving at around 1000 mph. That puts our momentum (p) at about 15000 lbs x mi/hr (depending on your mass, which is dependent on how hard you work at Team Diet) because p=mv. I'm a little fuzzy on my physics, so I'm not entirely sure how that relates to f equaling ma.

Wikipedia tells me that this is the derivative for f=ma, and p is in it. Beyond recognizing that this is calculus and that this is definitely in my General Physics I notebook because I ignored Dr. Hones when he told us we didn't need to frantically copy all derivations because we would not understand them (which we clearly did not), I don't know what to do with this. ¿Maybe you do?

So moving on. If the world stopped, our velocity would stay the same, so then the acceleration would be zero.. right? But I think wrong... because first off, that would make force zero as well and that doesn't seem right, and secondly, wouldn't our velocity slow down because there would be some effect of gravity? Gravity is 9.81 m/s^2 and that is where I stop, because I'm not in the mood to convert units or even look up anything anymore for that matter, and I'm still confused about how we can get from mass and velocity to mass and change in velocity to find force, and yeah... ni modo.

ATTENTION SMART PEOPLE: My basic question is.. is that 9.8m/s^2 enough to keep us down if our 150lbs kept going at 1000 mph if the earth stopped? I'm thinking it's probably not...

Wow, that took a lot out of me. I honestly did not anticipate getting into that much thought. But, Junior Retreat got pushed back a week and this has been a great mentally stimulating diversion :-)

5 comments:

  1. Congratulations! The world of graduate school is ever so alluring. Best of luck to you in your future studies.

    Now that you'll be in Baltimore, we can see each other more often! That is, when you're free and desiring to see me. :)

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  2. Congrats again on grad school!

    Also, interesting! Hmmm, so I think this is what would happen if the Earth suddenly stopped rotating:

    1) Things are going to be worse for people closer to the equator (i.e. you!) because they have a higher initial rotational velocity than the rest of us.

    2) The earth stops rotating. All objects (i.e. us!) keep moving on a vector tangent to the earth at the velocity we started at (i.e. really fast!).

    3) The earth's gravity pulls us toward its center of mass. We'll eventually regain contact with the surface and be slowed down by friction (i.e. crashing/skidding to a horrible demise).

    It would be possible to calculate the path of this arc, starting from the initial rotational velocity, which depends on our latitude. We could compare how far people in San Diego would go flying compared to those in Rochester! Also, our individual masses won't have any effect on the situation (this is analogous to how a feather and a 100 lb weight would fall at the exact same rate in a vacuum).

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  3. If Earth suddenly stopped rotating on its axis, I imagine everyone would continue to move counterclockwise (east) at 1000mph (ignoring air friction, trees, buildings, other obstacles, etc).

    As far as the flying off into space thing goes, you need to consider the centrifugal force that is no longer present. I suspect you'd remain on Earth, but would have a painful accident with some stationary object.

    Would you be safe at the polls?

    ps- obv congrats

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  4. Every time someone mentions centrifugal force, I am reminded of a certain awesome comic:

    xkcd.com/123/

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  5. So yea.. i have no thoughts on what would happen if the earth stopped spinning (to think it would come to a complete stop is very out there, i'm not too worried) but I did get a 1275 on the bird quiz thing.. so yea, i'm clearly very smart.

    Congrats again on JHU, I am now going to go to a Red Sox game in Baltimore, and then hang out with you.. just so you know.

    Sucks about the starbucks tea thing.. at least you can still have a good time hanging out in front with a friend, right? So you got that going

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