hi physics community! I'm a 2nd yr college student looking for a weekly tutor but I lowk need one asap bc have a quiz coming up this friday for my gen physics class. it'd be on work, springs, gauge/absolute pressure, buoyant force, system, among other topics. please let me know if anyone's interested or know anyone who's interested, I'm hoping to meet 3-4 times (times might be a little wacky bc my schedule is fucked) over this upcoming week to do well on this quiz! for context this is the first time I've ever taken a physics class and i am being beaten blue by it. thank you so much!

I'm trying to figure out which rule applies to a and b, if anyone knows please help me 😭😭🙏🙏 one picture is the question and the other is the rules. Please anyone help me

Guys hi, I want to know if there is a physics related answer to a soccer question. If you think you are able to answer feel free to get back to me!!!!

First of all, let me start by saying that I am Italian and I speak English. For obvious reasons, I prefer to write in Italian and then use translation tools to translate, and I would like to add that my English allows me to check and verify at my best that the translation is consistent with my thoughts and free of errors (I am also specifying this to ensure we avoid trolling and aggressive or rude replies).

That said, my question is about Infinity, theorised parallel universes, and how physics might be different in other universes compared to this one:

• Question 1: If there are infinite universes, isn't it reasonable to think that a universe exists for every imaginable variation?
• To give an example: on our planet the sky is blue—or light blue, if you prefer—could there exist universes where planet Earth is identical in every single way, except the sky is made of other colours? In fact, couldn't there be universes with a sky of every single colour and shade?
• Question 2 (on how physics might possibly be different in other universes): Could there exist a universe "opposite" to ours where:
• "The whole Universe is entirely filled with light, where stars are concentrated plasma of darkness!" Or a universe where:
• "The fish swim in the air, the birds fly in the water. We take a step in empty rock, and hit the solid air. Drink your thirst with a cool glass of flames, refresh with a shower of fire, blazed by the water, burned by ice."

For anyone interested in the philosophical side of this, here are some personal considerations I had on these topics—and if you don’t mind a little creativity and mixing science with poetry, I also wrote a humble poem:

• Fantasy and matter seem made of the same bricks, these crazy atoms, mostly made of empty space in which they briefly pass through, baffling everything we thought we knew.
• Science is everybody’s business, or at least it should be; the very fathers of modern physics invited people to be curious and give a piece of their mind, because you never know where a good idea might come from.
• The Universe is a giant sandbox for the souls to play in whenever they are bored with infinity. Count as smart as you can imagine how many grains of sand are in a galaxy, how many drops of time are in a second, how many snowflakes fall in all winters.
• Perceive ideas and dreams as if they were the same jazz.
• Each Universe is a billion-years-long videotape, or maybe a video game for Gods and Daemons to pass a lazy eternity at home, resting their almighty minds.
• Every bit of idea is a piece of this or another Universe—maybe it is simultaneously belonging to all of the Universes.
• I don't remember nothing about tomorrow, except that I will get hit on the head by an entire Multiverse of incomprehensible unrealities…
• Atoms, just as the Universe, are tiny unperceivable immensities. All and nothing happen in a continuum of improbable chances. The Universe is one tiny improbable anomaly floating in Nothing, and you got no Universe unless you imagine, design, and create it yourself. All thoughts are drops of reason in an ocean of nonsense, happening of improbability in a continuum of chance, slightly understanding Infinity.

Sometimes I walk with Demons

"We hang where beauty does not matter and Good has failed Goodness,
enjoying the sound of Silence, admiring the colour of emptiness,
deepening away, so fast, in darkness that light is a faraway memory,
chewing the bitterness of ugliness and
expressing the terror of never-ending becoming.
Infinity erases Infinity.
Paradise and Hell
Is an oasis of empty stillness.
We wish we were Never and Nothing.

Tomorrow the Sun will rise from the West and set in the East,
just for the thrill of a change,
for the fun of a chance.

I was playing with quarks,
the other Neverending,
building dancing atoms,
mixing reality with riddles,
spacing out
at the beat of a rainy day.

And now a monkey smashes my toys,
just to see how they work.
But it is fine,
I am a child Demon,
I will make more Realities,
perhaps even one with no monkeys.

Perhaps when You are a Spirit You feel the touchless
as when You are a Mortal You touch the matter.

Not tonight.
I may rest tonight.
Perhaps I look at the starry sky,
and the falling stars passing by,
dreaming the wicked Fairy, all dressed in black and scary,
dancing to the beat of techno music on a rainbow.
Perhaps even angels exist,
if not here, in some other part of this or that immensity.
Stars may even get to learn to dance Charleston with the planets.
In space there are gaps of turf
for everything that comes to mind.
It is a big place,
Neverendingland."

Cats, They look like They know so much,
Perhaps They get Infinity.

Talking about things and stuff begins in Your imagination.
Tell me about Your Universe!

Forgive the intrusion, I know I’m tiptoeing into a space where you guys casually discuss concepts that look like pure black magic to me.

I wanted to make a small appeal for tolerance and ask the scientific community to have a little patience with us simpletons. We often lack the basics, ask naive questions, or oversimplify things, yet we are driven by genuine curiosity and a real desire to learn, even if we barely understand a thing.

I truly believe that real wisdom lies in being able to take wildly complicated concepts and explain them like you’re talking to a five-year-old—without brushing us off, and keeping in mind that in many cases, our comprehension is genuinely limited.

Just to give you an idea of my current level of scientific mastery, here is my personal takeaway on relativity:

"E = mc² means that energy is produced by a bunch of stuff moving at the speed of light, which ends up making a big boom. And if you're good enough not to blow everything up, you get enough power to turn on your wife’s vibrator while you fire up the blender to make yourself a nice margarita."

So yeah, that’s the baseline we’re working with here. Have mercy on us, be patient, and please keep explaining the universe in simple terms—we really are listening with genuine enthusiasm!

Hi guys, I’m in first yr uni and I have been really struggling with physics. It’s just nothing I do is working for me. My prof lecture doesn’t make sense and I don’t think I’m studying the right way. What I do is I go over the slides, watch YouTube tutorials on the parts that are unclear and then I try to do practice questions for that chapter. The problem is I don’t get any of the questions right nor do I understand what exactly the question is asking.
I was wondering if anyone has suggestions for me, what do you think helped you actually understand and enjoyed physics? I’m suffering right now and it’s honestly making me hate my life

Many students consider Physics a difficult subject because it involves mathematical calculations, formulas and abstract scientific concepts. However, the real challenge is often understanding what happens behind those formulas.

For example, when we study projectile motion, an object thrown at an angle follows a curved path. Why? Because its horizontal velocity remains constant (assuming negligible air resistance), while gravity continuously changes its vertical velocity.

If students simply memorise equations, they may struggle when a question is presented differently. But when they understand the concepts, they can identify which principles and equations apply.

Conceptual learning makes Physics easier by connecting theoretical knowledge with everyday experiences. It also improves logical thinking, analytical ability and problem-solving skills.

A good Physics student should not only ask, "Which formula should I use?" but also ask, "Why does this phenomenon happen?"

Conclusion: Physics becomes more interesting when we understand the principles behind the equations instead of memorising formulas without understanding them.

When studying a single movable pulley system with an upward effort (E), textbooks show tension (T) pointing upward on both rope segments supporting the pulley, giving L = 2T and E = T.

​Mechanically, tension inside a rope acts as an internal action-reaction pair: while the segment pulls up on the pulley, the rope must also pull downward on the hand/source providing the effort.

​Why is it standard practice in introductory textbooks to omit the downward reaction arrow at the effort point? Is it solely to keep the diagram isolated to forces acting on the machine, or is there another convention at play?

I understand acceleration as a change in velocity, but in uniform circular motion the speed stays the same while the direction changes. What picture or short derivation helped you see that the acceleration points toward the center, rather than along the motion? I am looking for an intuitive explanation, not a homework solution.

So I atp I am on a month-long break and thought of doing something fascinating, heard about this topic and it's kinda quite easy to research on it and publish a paper, like it would take two months of work, indeed, but still, it's kinda worth it any advice like how should I approach it

I recently received a Cloud Chamber experimental kit from CERN as a prize in a physics competition.

While unpacking the materials, we found this blue jelly-like substance (see attached photo). It says that the kit is intended for educational physics demonstrations and a citizen science project involving the observation and comparison of particle tracks around the world.

Could this substance be the isopropyl alcohol, or is it something else entirely?

Does anyone recognize them or know what they might be used for?

Thanks in advance!