# physics-problems

Physics Final be like

A uniform rod is held at equilibrium by a diamond thumbtack attached to one end and a string attached to the other.

The string is then burned in a sacrificial ceremony dating back to Athens in 400 BCE.

Using the period of the rod’s swing and the godly insight provided by this ceremony, determine the hypothetical moment of inertia of the diamond before it was carved into a thumbtack.

2

4.23.2017 -

Cozying up with some math and physics problem sets… I can’t wait for summer break

Listening to “Palette” by IU

m = F/a therefore E = (F/a)(a^2+b^2)
a denotes centripetal acceleration
a = v^2/r = (2pi*r/T)^2/r = 4pi^2r/T^2
therefore
E = (FT^2/4pi^2r)((4pi^2r/T^2)^2+b^2)

Obviously

ao3 klance fic recs

After making my way through most of the klance tag on ao3 I thought I’d share the ones that have stuck the most with me so far. honestly this fandom is a blessing, these authors are a blessing, these dumb space gays are a blessing. so in no particular order, please, have some klance;

Cheeky by rideahorse / a short and sweet oneshot that involves both kissing and incessant bickering, and honestly with this pair, what more could you ask for. rated T.

official summary: Keith pinches his eyes shut, slamming the book down again and swiveling to face Lance. “Oh my god,” he groans, standing up and crossing the two feet between them before Lance can get out a word. He grabs Lance’s face between his hands (perhaps a bit rougher than needed, but hey, he’s always wanted to slap Lance’s stupid face) and the last thing he sees is an expression of pure surprise before he leans down and presses his lips against Lance’s.It’s a peck, and it lasts a second, and then it’s over. Keith leans back, releasing Lance’s face, and hisses, “There.”

if it takes two by velvetcrowbars / Lance has a confession to make and Keith is a knight in shining armor (sorta). a well written oneshot that Lance is absolutely not going to remember in the morning. rated T.

official summary: After the Sendak attack, Keith and Lance deal with unresolved things. Whatever those might be.“Keith?”“What?” He finally says, safely slipping the piece over Lance’s head with minimal knocking against his temple. He sets the discarded parts on the floor next to the bed.“I have a confession.”

never been kissed by kairiolette / I got a pretty good laugh out of this one, Keith and Lance have a Quality Bonding Moment™ at a local alien burger joint and things may or may not get a little out of hand. not that either of them are really complaining. rated G.

official summary: “You give off the obnoxious popular vibe. The mullet, and the rap sheet, and—the fingerless gloves,” Lance replies, and barrels on before Keith can take it the wrong way. “I’m so handsome, my name’s Keith and I’m a pilot.”“That sounds more like a compliment than an insult,” Keith says slowly, a disdainful quirk to his eyebrows that only spurs Lance on. He tilts his head a bit, his bangs shadowing his face, like he’s assessing a particularly impossible physics problem. “And I don’t like that voice you’re using.”

A Fish And A Bird by Methoxyethane / I loved this fic, adored it to be totally honest. the writing is excellent and the plot is funny while also being meaningful. could alternatively be titled “Keith and Lance take miscommunication to a whole new level and then some”. rated T.

official summary: Lance has a boyfriend. Lance does not realize he has a boyfriend. Keith, understandably, does not react well.

head to head, neck and neck, side by side by kushling / lance actually wins a spar with keith and he is so incredibly baffled that he 100% misses the 5000 implications of keith’s super massive gay crush on him. also, avatar references. definitely worth the read. rated T.

official summary: Lance and Keith both like sparring, Avatar, and each other. They have a hard time admitting it. Pidge makes fun of them. Space swords!!!

Stranded by cyborgtoaster / keith and lance end up being both very cold and very gay, in that order. denial is rampant and i definitely snickered once or twice during this one. rated T.

official summary: On a mission gone wrong, Keith and Lance end up stranded on a barren planet during an unexpected ice storm. Left to their own devices, they have to find a way to keep warm for the night. For once, maybe they can get along and only increase their unresolved feels.

moments of silence by attemptsonwords / really well written and great character capturing. lace is super bi and keith is really really frickin gay, together they both start to put the pieces of their relationship together. rated T.

official summary: Quiet moments between two boys who spend most of their time yelling at the other.

Drive! by wolfgun / set in an earth-centric au, keith has obviously never attended a child safety course in his entire life since he thinks jumping into a strangers car and screaming “Drive!” is an acceptable escape plan. it’s like a sleepover au but better. rated T.

official summary: “C'mon, c'mon, c'mon! Don’t you know how to drive? With a car like this, you can’t tell me you just love to mosey on down the road like a goddamn geezer,” he taunted. “What is this? Just a bit of daddy’s money and mommy’s rules?”“I’ll show you geezer, mullet-head!"Au Prompt: You’re getting chased by the police and you just jumped in my car and yelled drive, wtf man (except it’s not cops because Lance’s mom would kill him for bringing home a wanted teen)

I’ve got 99 problems and you’re every single one by kitwitt / lace is so deep in denial it’s almost physically painful to witness, keith is so amazingly gay that’s almost physically painful, too. for an explicitly rated fic a majority of the (currently 4/5) chapters are more fluff then smut. well written and witty, keith is a snarky little shit and it’s great. rated explicit.

official summary: “Obviously I’m not gay.” Lance floundered, voice breaking to a higher pitch.
Shiro tilted his head slightly. “But you have a crush on Keith.”

In which Lance fails to mask his attraction to a certain pilot under the ruse of rivalry, and everyone knows but Keith.

Miscommunication and failures by Lance by mikuridaigo / oh man i got a pretty good laugh out of this. collage-student au where Lance fucks up big time and ends up with a seriously pissed off Keith on his ass. literally. rated M.

(it’s Explicit companion piece Disastrophe (I like it rough) is also absolutely worth the read if you’re looking for that kind of thing.)

official summary: When Hunk called the Sunday before the spring quarter began, asking if he wanted to grab brunch with him, Lance said yes; and when Hunk called again, saying that his friend was joining at the last second, Lance didn’t think anything of it.Until said friend was the best sex he’s ever had.Basically Lance is a screw up and fixing this mess was probably going to kill him.

I could absolutely keep going and going and going (and going) because there are so many great klance fics floating around out there. I definitely encourage you to root around in the tag for yourself if you haven’t already. huge shout out to all the voltron fanfiction writers out there, every single one of you are in my heart. every. single. one.

thats all for now kids, tune in next time for more Quality Space Gay™ fanfiction recommendations !

KLANCE FIC RECS

Since i spend every night curled up in a ball at 3 a.m. reading klance fics i thought i would let you guys know some of my favorites !

in no particular order i give you my top klance ao3 fanfictions (that i have come across so far)

I HAVE A TON MORE RECS SO LEMME KNOW IF YOU WANT A PART TWO!!

or even a dan and phil fanfic rec/ a larry fanfic rec

The stages of AP physics homework:
• Getting out book: I totally got it this time! I actually understood the notes today
• Looking at problem: wow that's a long problem, but I can do it.
• Reading problem: what does that even mean?
• Trying problem: ill just write all the variables and wing it
• : we never learned this
• : how do I do this
• : *cries*
• : throws book across room
• : realizes I need the book
• : gets book
• : cries more
• : draws someone jumping off a cliff and label It physics
• : gives up
• : cries more as eats out of sadness
Math!Shawn

grumpy!blushing!mathgeek!cheeky!Shawn there’s a little bit of sexual (making out) content just as a warning. The smut is very light for once.

• Being almost late to your further math lesson and scanning the room for an empty seat
• The only available seat is next to that tall, constantly frowning boy that doesn’t have any friends.
• Sitting down next to him and smiling shyly at him when he frowns down at you.
• Your teacher deciding it would be a fantastic idea to pair people off for  group projects on algorithms.
• Shawn questioning the teacher’s decision and asking how one can make a group project about algorithms.
• Shawn frowning when the teacher tells him to just do the work and stop questioning his authority.
• You turning to Shawn and smiling again to try and get the big grumpy guy to stop frowning.
• Shawn simply pushing his glasses up his nose and telling you to get to work.
• You see him making a mistake and tell him so.
• He frowns at you
• “It’s not wrong.”
• “It’s so wrong even Einstein is turning over in his grave.”
• “How dare you bring Einstein into this?”
• Constant arguing, but in a friendly way. Shawn sometimes getting so worked up that he starts blushing.
• You make it your life mission to make him blush.
• When you write a test you two are always top of the class. sometimes he’s first sometimes you’re first.
• Everyone in the class, teacher included, finds you two very entertaining.  yet scary.
• Sexual Tension™️
• Recognising each other as fellow math enthusiasts and deciding to study together.
• Spending hours on end talking about physics, math, chemistry, science in general.
• Arguing: which theory makes more sense?
• Slowly but surely progressing into Unbearable Sexual Tension™️
• The teacher lets you two study in the math classroom, because you are his favourite students.
• You’re writing on the blackboard, explaining to him your method which he says is the wrong method.
• Shawn crossing his arms and frowning down at you when he realises you’re right.
• Refusing to acknowledge it.
• Arguing. Him looming over you, smirking. You’re getting all worked up because he refuses to say you’re right even though he knows you are. (He’s a little shit let’s be real here)
• Somehow ending up pressed up against the blackboard, Shawn wrapping your legs around his waist.
• His lips hovering over yours, waiting for you to rejecting him. (Fat chance of that happening)
• Messy kisses, his fingers digging into your hips, your fingers ruffling his curly hair.
• Grinding against his crotch, huffed breaths leaving Shawn as his cheeks heat up.
• Kissing his jaw as he grinds against you. His glasses fogging up.
• Before things get too heated in the middle of a classroom you break it off.
• His glasses slid down his nose a little and you can’t help adjusting them.
• Shawn asking you out, grumbling and stuttering, blushing because he stuttered then frowning because he blushed.
• Walking into class the next day and kissing the top of his fluffy head, the entire class gasping did she really kiss his head? does she want to die?
• Shawn blushing just a little bit but mostly smirking because damn straight he’s got a hot girlfriend and all those single losers that judged him can suck it now.
• Shawn not even hiding the hickey on his neck.
• Just because you’re dating doesn’t mean you are going to argue any less.
• The private study sessions somehow always end with Shawn’s glasses all steamy and your hair all messed up.
• Shawn frowning at a physics problem. You cup his chin with one hand, turning it towards you. Kissing the frown, then smoothing out the wrinkles on his forehead.
• “There, all ironed.”
• “Ironed?”
• “You looked like an old shirt. A cute old shirt though.”
• “Really? An old shirt?” *flat voiced, disbelieving Shawn*
• Shawn getting all flustered when you talk about math because your eyes sparkle and you smile so prettily.
• You asking him what has him all fidgety and blushy. Shawn mumbling grumpily.
• *mumble grumble* you *blushy mumble grumble*
• The entire class not understanding how Grumpy McFrowny turns all smiley and blushy around you.
• Someone pointing it out.
• Shawn giving them The Death Stare. The classmate shrinking back and wondering why they ever thought it would be a good idea to point that out.
• You gently touching his arm to get Shawn to release the guy from The Death Stare.
• Grumpy Cat Mendes melting under your touch.
• Shawn sometimes riling you up on purpose during your study sessions. You guys sitting on your bed, Shawn disagreeing on purpose. Smiling like an idiot because damn he loves you.
• You catching on and kissing that smile off his face.
• So much making out, crumpled math notes and pulling textbooks from under your butt.
•  Shawn whispering “I love you” into your ear. It’s a secret that only you’re allowed to know about.

for my little sponge @foleyftmendes I hope you enjoy it.

i cant concentrate on this physics problem bc the fucking toy has an ahegao face

2

17.05.2017 //

my finnish test got cancelled due to some difficulties so now i have plenty of time to study for it as we are going to have it on friday on instead( who am i even kidding, i won’t study eh)

now i’m trying to tackle some physics problems and oh boy it isn’t going that well :“)

Studying for an upper-division classical mechanics midterm...So lonely...

Even took time off work to study the next 3 days…3 chapters left…

How to Stay Organised

It can be difficult to stay organised and on top of things, especially at college/uni, but it is a crucial skill! Why? It reduces stress, helps you get things done (on time) and produce better work. We all know how difficult it is to balance a social life, grades and getting enough sleep, and, while achieving at all three is (sometimes) impossible, being organised brings you a couple of steps closer.

2) Start early. I know, procrastination is beautiful and seductive, and you have two weeks until your essay is due, but start early! As soon as you get an assignment or task, start working on it. Even if it’s just reading thoroughly through the task, start as soon as you can. If you have any questions or problems, you will have enough time to get them answered.

3) File your work weekly. It reduces both physical and mental clutter. I write my class notes on loose leaf paper, then, at the end of the week, I put them all in a big, ringbinder file. It keeps my backpack light and I know exactly where to find my notes when I need to refer back to them.

4) Colour-code if it’s not distracting. Some people find colour-coding too distracting, time-consuming and ineffective. Other people find it impossible to live without. Some people are in between. Figure out where you are on the spectrum and choose a system that works for you.

5) Do a little every day. It’s so much easier to stay organised if you break big tasks down into smaller ones and tackle a small task every day. I personally find this to be the most effective in reducing my stress, since I don’t have this huge “OH MY WORD I NEED TO STUDY” panic hanging over me. Sometimes all I need is two or three hours of studying throughout the day during the week to ensure that I don’t need to spend 12 hours on Sunday afternoon freaking out to finish my physics problem set.

6) Schedule time to relax, screen-free. I am as addicted to and in love with the internet as much as any tumblr user, but I’ve recently found that taking an hour every day to relax, without my laptop, phone or watching TV is really beneficial. Do some yoga, pray, read, daydream, draw…whatever doesn’t feel like work. I’ve come to realise that mindless tumblr scrolling isn’t actually all that relaxing. I still love it, but it’s simply not effective in clearing my mind. Having an hour to refresh my mind completely has been a game-changer, and it helps me feel more mentally organised by reducing mental clutter.

I hope these are helpful! If you have any questions, feel free to message me or send me an ask! You can also find my studyinstagram @ munirastudies. Happy studying!

xx Munira

He’s Like the Mona Lisa

Marinette sighed, staring at the back of Adrien’s head as though it was a particularly difficult physics problem. Which she supposed it was.

‘Why…’ she pondered for the millionth time since she had discovered his secret.

'Why don’t Chat and Adrien look alike?’

cheeky lil sprace soulmate au for yall!

The lines started appearing when Race was seventeen. One moment in class, he was working through a few physics problems, completely focused, and the next, he was staring at the black line on his arm. It was thin and scratchy like a ballpoint pen, and didn’t seem to follow any discernable pattern. Race watched in shock at the line continued slowly across the top of his forearm before coming to a close back at the start. He stared at the shape, trying to find any meaning in it, before realizing that it looked a little bit like a dog. After uncapping his pen, Race drew a quick face on what may or may not have been a dog, along with a bone.

Hello, I am writing a 'Apocalypse' story that also has mythical creatures in it and I am unsure how strong I should make them compared to humans. One of the main characters is a 16 year old Elf who was trained since he was ten, and I don't want him to be too strong. Elfs can use Runes and subtle illusions in my story. I am unsure on the power levels of other Mythical creatures (like Fae, Ghouls, Centaurs, Merpeople and Chimera) as well.

They should be as strong as the story requires. There is no concrete answers here, just world building, which is, ultimately, on you.

Let’s start with your main character. Elves (or Elfs, if you prefer) aren’t real, so they don’t age at a fixed rate. Which means, saying he’s 16 years old isn’t that useful. I understand the intent behind your statement, but it’s probably important to step back for a minute.

If we’re taking D&D’s setting basics, and running with those, a 16 year old elf is a small child. Conversely, D&D’s perfectly happy to call a 16 year old human an adult. This is, of course, assuming your setting’s elves aren’t completely ageless, come into existence fully matured, and then never change.

It’s worth remembering, when you’re building a fantasy setting, that you control all of the variables. Sure, your human characters should, probably, come across as mostly human, in most cases, but even that’s not set in stone. Accusations that Aragorn is unrealistic are fairly rare, and this is a character who’s in his 80s. (And, yes, there’s an entire internal justification for that, but Tolkien’s race of Men aren’t really human. They’re another flavor of mythical beings, like his elves and dwarves. Aragorn is a step further from that, but the point stands.)

When you’re talking about elves, that’s a very open topic. Depending on your source of inspiration, that could be anything from beings that are basically human characters, that have access to very advanced magic or technology (and no, this isn’t an oblique Stargate reference), a variety of fae, normal people who’ve been altered by some release of magical energy, or just another sentient species wandering your world. It’s up to you to define who and what they are, in your setting.

This also spills over into what sets them apart from a “normal” character. What your elves are is influenced by what you want to talk about. (Because your main character is an elf, their nature is far more important than if they were a minor side element in your setting.) Once you have that, then you can start to extrapolate how your elves are different from other beings in your setting. This could be as simple as your character being lumped in with the other mythical beasts and viewed as a different flavor of monster by the people he’s trying to save (or not), or it could be a coming of age story. This will seriously influence what your elves are. How alien they are. How they age. What their society looks like. It also affects how strong they are. Depending on what you’re creating, it’s entirely possible your character is already a superhumanly powerful engine of destruction by 16, whether he has the emotional maturity to handle that or not. In turn, that would seriously influence how elves are perceived by others in your setting. Or, he could still be a small child. Where he lands between these points is something that needs to fit the story you’re trying to tell.

To varying degrees, the same is true of the other creatures in your world. If they’re supposed to be incredibly powerful, to the point that normal beings can’t even slow them down, the apocalypse is an extinction event in motion, then that’s your answer. If they’re more of an environmental hazard that a well equipped group can deal with, again, that’s your answer. If they’re a nuisance that only becomes a serious problem in large numbers, you get the idea. In practice, you’ll probably want a mix of these things, depending on what your setting needs. It’s entirely reasonable that you’ve got fairly common threats like ghouls that can be dealt with, while still having far more powerful beings like titans or leviathans wandering the world wrecking things. How these interrelate will be influenced by the story you want to tell.

World building starts with the idea of wanting to tell a story, and having a vague idea of what you want to talk about. Then extrapolating a world that supports those ideas. Finally, you go back through and start nailing down the fine details, like, “how powerful are these monsters?” or, “how did people react to their arrival?”

This leaves me in a slightly awkward place: without knowing what you’re trying to do, you’re asking for some of the final detail work without knowing what you wanted to do in broader strokes.

At a very basic level, the more powerful the creatures are, the more severely isolated human communities will be. I’m using power as an aggregate here, endless swarms of easily dispatched monsters that will overwhelm and obliterate can be more effective than a skyscraper sized behemoth that shrugs off any injury.

At the extreme end, humans may be restricted to a handful of small enclaves, and extinction could be imminent. On the other hand, you could easily have a setting where survivors have retaken and fortified entire cities, with heavily armed caravans wandering between, and smaller enclaves scattered across the world.

It’s entirely possible you’re setting up an environment like The Witcher. There are monsters, but they’re more of a pest than a real threat, and the apocalypse which unleashed them on the world is a dim memory.

There’s an old cop-out answer on physics exams, “the problem cannot be solved with the available information.” That seems to apply here. When you’re building your world, you have the  ability to shape it to fit your narrative. Think about the kind of story (or stories) you want to tell in it, and build your setting accordingly.

-Starke

Hi, I need a little help. I'm 16 and few months ago started being interested in astronomy. I haven't made a big progress since then, because I don't know where to start. I'm quite good at maths, not so "strong" at physics, but I don't have lot of problems with this subject. What and where should I learn at first? (I started "brief history of time", found "crash course" and csuDH course, but didn't start them). My knowledge of astronomy is very very low, so I'd be thankful for your advice!

Hello!
16 is a perfect time to start thinking about options in astronomy. Actually that was approximately the time I started to realize that astronomy/astrophysics is something I want to do in the future. :)

First of all - congratulation! You´ve already started! :) You need to have an idea about what would you like to do in the future. If it is an astronomy field - excelent! Now, next step is to know your options - I don´t know where are you from, but I guess there is a university nearby which is offering a study of astrophysics. Mostly studying astrophysics at university requires GCSE or graduation in mathematics and physics and good school results - but you need to find out by yourself, because every educational system is quite different and I don´t know how it goes in your country.
After you choose a university you want to study in, you should do next step which is realizing what are your options after you´ll finish university. I recommend you this website —> here <— you can read something about how to plan your education in astronomy/astrophysics and some tips. —> here <— is a website where many astronomers/astrophysicists are looking for jobs.  Also you can check this site —> here<— where you can find another list of jobs in this field

(I´ve answered similar questions not long time ago, so you should check it out >> here << and >> here << )

## GET INTO IT!

The fun way to learn something about a field of astronomy is to check out astronomy websites…These are my favourite:
NASA
Space.com
ESO
CERN
New Scientist
Physics-Astronomy

If you prefer something more personal, try these books:
(These are not hard to understand and they will help you in the beginning)
The Fabric of the Cosmos: Space, Time, and the Texture of Reality
The Elegant Universe: Superstrings, Hidden Dimensions, and the Quest for the Ultimate Theory
The Book of Constellations: Discover the Secrets in the Stars
The Physics Book: From the Big Bang to Quantum Resurrection, 250 Milestones in the History of Physics (Sterling Milestones)
Pale Blue Dot: A Vision of the Human Future in Space
Cosmos
NightWatch: A Practical Guide to Viewing the Universe

If you don´t have energy or if you are not in the mood for reading, try these documentaries:
How the Universe Works
~ The Universe (TV series)
Known Universe
~ Cosmos: A Spacetime Odyssey
~ The Age of Hubble
~ The Year of Pluto

I also derive benefit from youtube videos…you can find many documentaries there and also many astonishing animations, tutorials and even whole lectures which can help you with better understanding math/physics/astronomy problems.
~ Astronomy lectures
~ Physics lectures
~ Math lectures
~ Astronomy animations
~ Astronomy documentaries
~ Physics documentaries

## SOME CONCLUSION

It is important to know your options. Another important thing is to make contacts with people who know things you do not know yet. The next step is to choose what you want to achieve in the future and ensure a procedure which will get you there. Self-education is necessary :)

Don´t worry, you will get there, but it takes time and work!

With love @astrophysicsstudent <3

3.2.17 hi guys! just taking some notes and solving problems in physics. i know i haven’t been active lately, i promise to be more active in the future!

INTP in Physics
• INTP: Don't ask me for help. I have no idea what I'm doing.
• ISTJ: Yet somehow you're passing with a 90.
• ISFP: She has logically bullshitted her way through all the tests.
Tests may solve Einstein’s great riddle

Astronomy experiments could soon test an idea developed by Albert Einstein almost exactly a century ago, scientists say.

Tests using advanced technology could resolve a longstanding puzzle over what is driving the accelerated expansion of the Universe.

Marichat May Day 3 - Homework

Marinette is struggling with physics. Strangely enough Chat Noir stops by her house offering to tutor her. What happens when Marinette’s grade improves but she’s begun to use Adrien’s way of working through a physics problem?

Rated T || 2,537 Words

Cross posted to Ao3 || FF

## Now it Makes Sense

Physics was not Marinette’s strong suit. She excelled in all her other subjects but when it came to physics she was completely lost. Alya had tried to help her but there are only so many times one can fail at trying to study together before “want to study” changes to “want to hang out.” It was during one of those study sessions turned hang outs that Alya told Marinette how good Adrien was at physics. The blogger wiggled her brows at Marinette when she recommended the bluenette ask her crush to tutor her. Marinette dismissed the idea because if she couldn’t speak two words to the boy without stuttering then how was she supposed to ask him questions when she was confused?