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Pay your respects /sci/.
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F
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Literally whom
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Literally F
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So I ran across this problem in a test prep book (not homework):
A man can drive 120 miles in either of two ways. Either he can travel at 40 mph the whole way, or he can do the first half at 50 mph and the second half at 30 mph.
I thought they would obviously take the same amount of time, because 50 and 30 average to 40. But the book says the second way takes longer, because of the following:
120 miles / 40 mph = 3 hours
60 miles / 50 mph = 1.2 hours
60 miles / 30 mph = 2 hours
Therefore the second method would take 3.2 hours. Those equations make sense, but I just can't understand how the two methods could possibly be different if the average speed is 40 mph for both (assuming no deceleration time). I know I'm dumb, but what's going on here?
11 Posts / 1 Images
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Because that's not average speed. Average speed is total distance divided by total time. Never get your average speed by adding up speeds and dividing them by n.
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>>8525382
Because speed is distance over time.
It becomes weighted if you try to average them.
If you want to average them correctly use the distance and time.
Also if I had a wood burning stove in my house I would want CO monitors.
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Of all the human behaviors I've encountered, "backtalk" is the most brutish and unrefined one.
Why punish somebody for arguing with you? It's just unreasonable. It's like you're treating them as machines to be used just because you have authority over them. It's barbaric.
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>>8525306
t. 14 year old who mommy just sent to his room
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>>8525312
Mom's dead
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Next time somebody tells me what to do without giving a clear reason or allowing me to argue, i'm gonna repay their stupidity with a broken nose.
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Doing a past paper for my Calc revision. Came across this question (I suck at vector calculus identities)
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I get part i) and ii), but part iii)b) fucked me over.
Here's apparently what the solution is.
I really don't understand how he went from line 3 to line 4. How did he know they were 0? and how did he know it was axb?
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>>8525284
Wow OP for a moment I stared at your pic and couldn't figure out how to solve the first exercises, I got desperate and felt like shit, it was really painful. But then I re-read and figured out I had read it wrong or idk, the point is that I figured out I can solve them effortlessly, thank god I'm not a brainlet, cheers op.
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>>8525353
Nice one. Could you explain the last one to a brainlet like me - in particular, how he gets the 0s and the axb?
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does /sci/ believe in mandatory vaccinations by the government?
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>>8525012
Fuck off with your Reddt bullshit debates.
>>>/trash/ you dumb cunt.
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>>8525013
>hurr this is MYY board
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>>8525012
Why do you faggots think threads like this are welcome here? You have an entire fucking board dedicated to discuss nonsense like this. FUCKING USE IT. >>>/pol/catalog
How can you transfer energy without the use of a projectile? All I can think of is sound and light because I'm not a /sci/ guy. Any thoughts?
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>>8524997
use a battery?
a steam turbine?
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>>8524997
You can use
>Lasers
>Cathode rays
>Protons
Do protons and electron count as projectiles?
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>>8525015
Yes, but for the purpose of this thread we'll say no. Anyways that shit won't work outside a controlled environment.
I'm looking to essentially transfer the energy of a normal bullet without the actual bullet in a real world environment.
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06:12, 06:16
06:12
1
The root digit; a point or a circle, not a duet. Black standard – hover.
2
The fount. Opposite, and polar – the line.
3
The minor – triangular. Wit, a tutor of the second – a quiver.
4
Major, or the square: a fix, a gradient – a scale. Skeleton.
5
Minute integer; agent of a quartet. A note on a blank canvas – a pin.
6
Naught. screw.
7
The enigma; corrival for the root digit. Sinister asylum, the lens.
8
Eclipse number. Opulent mien – a lever.
9
Bone – immaturity. The phobia, temper; a nexus.
10
The flux, a cross of hue and tint, multiplied. The perfect blend; the fly.
06:16
2 (8)
Band (.2).
3 (9)
Bezel (.5).
1 (10)
Lug (.1).
1 – 8
Hard Problems; axioms of numbers 1 – 8. (3)
1
UNIVERSAL
a: Logic, or creativity.
description: 0, or 1
2
VIOLENT
a: I, student.
description: 3/4
3
GENESIS
a: I, scholar.
description: 1/4
4
CONTINUUM
a: Wisdom.
description: 4/4
5
CENTRAL CONTINUUM
a: Wisdom's end.
description: 1/2
6
CONTINUUM END
a: -2
description: 2/2
7
ENIGMA
a: 1
description: 1
8
ECLIPSE
a:
description: 0
0
(Red, Blue, Yellow).
Green, Yellow (White);
Purple, Black, Red, Orange (Beige).
Blue, Blue (Blue).
(Green, Black).
[under construction]
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fart
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>>8524836
>iiii instead of iv for 4
what?
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>humans came from bacteria
>bacteria are far more resilient than humans
>evolution pushes bacteria to become less resilient
Someone explain this to me.
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>>8524781
Multicellular life has certain advantages, such as being less vulnerable to protist predators.
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>>8524781
Humans didn't come from bacteria.
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>>8524781
Is this real? Holy shit.
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Anybody else feel too stupid to be studying what youre studying?
I am rarely satisfied with the answers I come up with in my HW so I end up googling around for a better solution after trying for a while. It makes me feel really pretty stupid once I see how easy the answer is.
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>>8524704
not in university, but im too stupid/lack of background to study what i would like to preferably continue to study and so i'm stuck with second tier.
what do you study?
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>>8524709
>Informatik (German version of CS)
pls be nice
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>>8524704
I wonder what degree has the biggest proportion of people who feel like this. I'd guess something like maths/physics but I'm not completely sure.
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What's his fucking problem?
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not enough burgers
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He got a B on analysis as an undergrad so ever since he has dedicated his life to getting his former professor fired by tearing down the theory of ZFC and Cantor
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>>8524503
not tame enough
Anonymous
Tried to talk to a recruiter for dev position. Flat out rejected me as a pure math major 2016-12-08 05:06:32 Post No.8523779
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Tried to talk to a recruiter for dev position. Flat out rejected me as a pure math major 2016-12-08 05:06:32 Post No.8523779
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Tried to talk to a recruiter for dev position. Flat out rejected me as a pure math major
Anonymous
2016-12-08 05:06:32
Post No. 8523779
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I went to a career fair today to talk to a start up company that has been successful. They acquired a new building downtown and have funds to hire a lot of devs.
First recruiter I spoke to said they don't require you to know X language coming in, but focus on data structures & algorithms. I thought cool, I have a chance of being hired. He introduced me to another guy.
I told him I was interested in a junior dev position and told him about a ML project I worked on. He flat out told me I would not be a good fit for his team, that he would not hire me. He said he needed 2-3 years of experience with an arrogant smug on his face. For some reason he got super defensive and started semi-yelling at me.
I asked him what he recommended so I could get experience and yelled "I DONT KEEP UP WITH OTHER COMPANIES, I ONLY FOCUS ON WHAT MY TEAM IS DOING. I WOULDN'T HIRE YOU. YOU ARE NOT A GOOD FIT. YOU NEED 2-3 YEARS OF EXPERIENCE."
He started to walk off and would't even let me get a word in. I told first recruiter I thought they hired based on aptitude and not X skill sets and he was baffled by what happened.
Fuck this. Why can't I get a dev job as math major when I have programming experience? I literally am crushing my CS courses too.
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>>8523779
>He said he needed 2-3 years of experience with an arrogant smug on his face
>I DONT KEEP UP WITH OTHER COMPANIES, I ONLY FOCUS ON WHAT MY TEAM IS DOING. I WOULDN'T HIRE YOU. YOU ARE NOT A GOOD FIT. YOU NEED 2-3 YEARS OF EXPERIENCE
>He started to walk off and would't even let me get a word in.
Translation: "I only hire H1B pajeets. I'm only here so I can trick the government to gibbing moar visas"
https://www.youtube.com/watch?v=TCbFEgFajGU
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>>8523779
Sounds like you dodged a bullet tbqh. That's fucking weird behaviour for a career fair
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>>8523868
Thanks. I think he had in mind who he wanted to hire and when he heard I was looking for "junior" positions he nope'd out. But he did it in a very rude way and definite way.
WHERE ARE THEY NASA
REEEEEEEEEEE
Didn't Juno get to Jupiter months ago? What's the hold up, gimme dat high res!
Cassini is heading out soon so for god sakes give us some good shit already
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>>8523441
Didn't the have engine trouble that lead to them skipping some of the photography?
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>>8523441
Meanwhile Cassini still doing good work.
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>>8523441
Nasa are doctoring them as ususal.
Anonymous
No mathematician or scientist has debunked Oyibo's GAGUT 2016-12-08 02:35:05 Post No.8523392
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No mathematician or scientist has debunked Oyibo's GAGUT 2016-12-08 02:35:05 Post No.8523392
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No mathematician or scientist has debunked Oyibo's GAGUT
Anonymous
2016-12-08 02:35:05
Post No. 8523392
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https://www.amazon.com/Grand-Unified-Theorem-Everything-Fundamental/dp/1590338359
https://www.youtube.com/watch?v=tMElOY-G2qw
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What is GAGUT?
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>>8523392
GAGUT is amazing, it is a true and proven theorem.
I have gained a deeper understanding of things like gravitational lensing or quantum vacuum fluctuations by studying GAGUT.
GAGUT is the key.
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>>8523431
hahha
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https://www.washingtonpost.com/news/energy-environment/wp/2016/12/07/trump-names-scott-pruitt-oklahoma-attorney-general-suing-epa-on-climate-change-to-head-the-epa
>Trump to name Scott Pruitt, Oklahoma attorney general suing EPA on climate change, to head the EPA
I've never felt this level of rage before.
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>>8523374
>I've never felt this level of rage before
"waaahhh someone believes something different than I do"
go fuck yourself
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>>8523380 climate change isn't a "belief" anymore. With the amount of evidence we have denying climate change is like denying gravity.
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How could anyone accept anything as non-obvious as the axiom of choice as a fucking axiom?
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>>8522906
It's obvious if you aren't a brainlet.
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>>8522906
Who the fuck makes these "memes"? The majority of them are cringy as fuck and use the shittiest grammar you can possibly imagine.
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because it doesn't lead to any inconsistencies with the other axioms