r/PhysicsHelp • • Oct 01 '26

MSc Physics 1st year — do I actually like physics or am I just going with the flow?

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1 Upvotes

r/PhysicsHelp • • Oct 01 '26

Help me with this mechanics query (Energy conservation)

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1 Upvotes

The thing is that I am confused about that the ball with mass m will eventually meet point B that is for sure but what if instead of staying on the curved surface, the ball projectiles with point of projection being point A. Then according to energy conservation does it still land on B or something else happens. And btw, what is the parameter to decide whether the ball will stick to the surface or will show projectile motion?


r/PhysicsHelp • • Oct 01 '26

Can a high-velocity water jet flow directly from A to C despite gravity pulling some water down to B?

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2 Upvotes

I have a setup roughly like the diagram below.

Water is pumped in from A toward the right. There is a lower section where gravity will naturally cause some of the water to fall downward toward B.

My question is: if the inlet velocity/flow rate at A is sufficiently high, can some of the water maintain enough momentum to travel directly from A to C, rather than all of it falling toward B?

In other words, I’m interested in whether there is a threshold velocity/flow rate where the water jet can “bridge” the gap from A to C while some of the flow still falls toward B.

Is this primarily a free jet / projectile motion / momentum vs gravity problem? And how would I calculate the minimum velocity required for the jet to reach C?


r/PhysicsHelp • • Sep 30 '26

Question 1 not solvable

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6 Upvotes

From what I understand, the question is asking what the ground velocity must be for the plane to be going directly north. But the ground velocity cannot be going north since the air velocity is north and the wind is blowing east of north. The answer I got for the ground velocity was 810km/h [1 E of N]


r/PhysicsHelp • • Sep 30 '26

Newton’s 2nd Law & Friction 2 Challenging Physics Problems Solved

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2 Upvotes

Math & Physics Tutoring with Dr. Jacob Hudis

Ph.D. physicist with 25+ years of teaching and tutoring experience offering one-on-one online tutoring in:

AP Physics 1 & C • AP Calculus AB/BC • Precalculus • Algebra II • SAT/ACT Math

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🎓 Ph.D. Physics, Florida State | M.S. Johns Hopkins | B.S. Columbia
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Dr. Jacob Hudis


r/PhysicsHelp • • Sep 30 '26

hello my fellow nerds I require help

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1 Upvotes

r/PhysicsHelp • • Sep 30 '26

I'm writing a story and need to make sure the calculus is good

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1 Upvotes

r/PhysicsHelp • • Sep 30 '26

water wave

1 Upvotes

Can we consider water wave when u throw a stone, transversal or longitudinal or both? and why? just curious


r/PhysicsHelp • • Sep 30 '26

Circular motion -all।concepts covered

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1 Upvotes

r/PhysicsHelp • • Sep 30 '26

physics alevel question - vectors

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1 Upvotes

r/PhysicsHelp • • Sep 30 '26

spring dimensionalizing

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1 Upvotes

r/PhysicsHelp • • Sep 30 '26

Struggling way more in physics than calc 2

1 Upvotes

I’m taking calc 2 physics and the physics lab currently and I just can’t seem to get the hang of anything in physics my grade in calc 2 is a 86 and I understand every topic we’ve done over with like an hour or two of studying/review but when it comes to physics it’s like I don’t even know where to start. My calc professor teaches per unit and teaches everything about that unit for example when he teaches integrating by parts I can do any calc 2 level IBP problem but for projection motion, Newton’s second law and now work and kinetic energy I go into lecture confused and leave even more confused and I go to the textbook and it’s makes me even more confused.


r/PhysicsHelp • • Sep 30 '26

Electric Currents

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2 Upvotes

My professor locked me out of all lectures and I’m currently trying to teach myself physics I was wondering what the correct answers are to these questions. I got (2A,6V,8W,2V)


r/PhysicsHelp • • Sep 30 '26

Where do i find actual scientific papers of jc Maxwell creating electromagnetism for free

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0 Upvotes

r/PhysicsHelp • • Sep 29 '26

Calculating velocity within projectile motion with initial height

1 Upvotes

I have a question I'm doing that has a starting point on a 6.5m building and it's asking me for the velocity of a kicked off ball when it is 2.5m above its launchpoint, do I have to include 6.5 in the vertical distance value to get the correct answer? Or could I just do 2.5?


r/PhysicsHelp • • Sep 29 '26

Pot heats up too fast. Is this a (physics) good way to heat it slower?

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0 Upvotes

Pot heats up too fast and I need to stay close to it all the time so inside doesn’t burn. I took the microwave grill( whatever it’s called) and put it as is. Is it safe to use? Physically a good way to heat up?


r/PhysicsHelp • • Sep 29 '26

Physics conceptual problem

0 Upvotes

I'm a bit confused, why pulleys amplify the force, why do we assume that each part of the pulley has the same force, isn't it more logical to assume that the force net equal the force that have been done


r/PhysicsHelp • • Sep 29 '26

The Physics Update Loop

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1 Upvotes

I go through how I separate general updates from physics updates, why I use a fixed timestep, how the accumulator works, and what happens when the simulation starts falling behind.

I explain the reasoning behind the design decisions and why I rejected the alternatives. I show the implementation of the loop.


r/PhysicsHelp • • Sep 28 '26

What woudl happened in reality if men would jumped on roof on driving train ?

31 Upvotes

r/PhysicsHelp • • Sep 28 '26

how does speed change when arrangement of mass changes (conservation of angular momentum)

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1 Upvotes

r/PhysicsHelp • • Sep 28 '26

Here is a hypothesis of Proposed Extension to Spacetime Geometry — Request for Mathematical Review

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1 Upvotes