Open any Physics Book & Ask me any question. I'll solve it in 10 Sec

[BRUCEWAYNE-lqxv]

Voice = robot
Output = robot
Clap= synchronized and sudden
Return value =Chakk de India

[DNYi]

The sudden claps scared the shit out of me😂

[HariomOjha-tbnw]

Depression is shown on their student

Edite : i got 16k like😮😮

[Mr.Borst.Physics]

*Any student (who studies physics) should be able to answer any high school level problem within 2 mins. Excellent work nonetheless. A+*

[priyanshusrivastava]

Motivation ❌
Demotivation ✅

Edit : Thanks for much likes 💀

[SNEHA-ud]

Everyone is watching how he solved the question... But I was watching how he hold the marker 😂😂😅😅😅
OMG 😳 7k likes 😱

[roonitt]

That's simple Bernoulli theorem 💀

[jasonwilliams]

Lots of haters in the comments. Even if you think the question was not difficult it is not easy to stand in front of a class of peers and teachers and allow yourself to be challenged by a random academic question with the risk of embarrassment of being wrong. I salute his confidence and courage.

[sumtensor]

Any physics problem, eh?

Consider a bosonic open string propagating in D-dimensional Minkowski spacetime. We use the light-cone gauge for quantization, which simplifies the analysis by fixing certain gauge degrees of freedom.

1:
(a) Write down the mode expansion for the transverse coordinates X^i(\tau, \sigma) of the open string with Neumann boundary conditions.

2:
(a) Derive the commutation relations for the oscillator modes \alpha_n^i resulting from the canonical quantization of the string.

3:
(a) Show that the mass-squared operator M^2 for the open string can be written as:

M^2 = \frac{1}{\alpha{\prime}} \left( N - a \right)

where N is the level number operator and a is the normal ordering constant.

(b) Determine the value of the normal ordering constant a .

(c) Calculate the mass squared of the ground state and discuss whether it is tachyonic.
(d) Find the mass squared and degeneracy of the first excited states.

4:
(a) Demonstrate that the requirement for anomaly cancellation in the Lorentz algebra leads to the critical dimension D = 26 .

[player]

competitive exams be like :- solve it within 30

[cassusgames]

This is an AP Physics 2 problem (formerly covered in Physics B), and really a high school student would be capable of solving it pretty easily if they had covered fluids. If you look at the actual equation, it’s just stating that A1v1 = A2v2, establishing proportionality as the shape of the pipe changes yet maintains the same volumetric flow rate through having a varying speed. Essentially, what goes in must come out, and the speed changes to maintain that as the shape of the pipe changes.

We don’t have information about the linear flow rate (velocity) directly, but we do have additional information about the pressures between the two points, which we can treat almost like energy but with fluids using Bernoulli’s equation, and they’re used in a similar way to set up equivalence between two points. The rowe there is a constant variable for the density of water.

The problem looks challenging, but if you’re familiar with fluid problems, it’s relatively simple. Once you set up the equations representing the situation, just solve. However, depending on how young this dude is, good on him if he really mastered all of this material and more as a young teenager, being confident enough to solve any problem in a textbook.

Edit - made paragraphs to make the wall of text less of an eyesore

Edit 8 days later: I came back to the problem and decided to do it myself, and I got a different answer than the one at the end of the video. I looked at the kid’s work, then realized halfway in that something looks awfully wrong with Bernoulli’s equation. The video also cuts randomly and doesn’t show the whole process, so I had to find the full video.

After watching that, I realized he actually doesn’t use Bernoulli’s equation and unfortunately does not solve the problem correctly. The main obvious thing that’s visible in the video is that he puts a volume (V) term in front of the pressure very early on when there shouldn’t be one, which makes the problem essentially unsolvable from then on. He used dimensional analysis to try to get a valid equation, but the equation was not equivalent to the one needed. Another subtle thing is that if we’re going from an area of 40 cm to 20 cm, we’d expect velocity to go up, and for Bernoulli’s equation to maintain equivalence, we’d have to write the pressure as going down with a negative sign. Because the terms on both sides have to be equal, since the gravity term is the same, only the pressure term can balance it. We know the pressure changes by 700, just not the sign. Writing it as positive would get us a negative in a term that needs to be square rooted at the end, which tells us something’s wrong and the setup was incorrect.

iPhones are bad for writing all the steps and it looks terrible since I can’t use exponents and subscripts, so I won’t write my steps unless someone really wants them, but the actual answer is in the original video in the comments, and it should be 2732.5 cubic centimeters per second, or at least that’s what I got, and a few other comments did too. The book doesn’t look like it has the per second term in the video, but since it’s a flow _rate, _ there should be one, and the units obviously are so when you look at V(flow rate) = A1v1.

[GdHNightshade]

I did this in my freshman physical science class! Mind you, I struggled. However, this is all just applying Bernoullis principal and can be solved by a simple equation. I don't doubt his genuis. However, a better question to ask would be to explain the way this principal affects fluids in larger systems or while two opposing fluids are being moved through non euclidienne shapes. Although I must admit I am no physicist and this boy has put in a lot more work than i have.

[Mr.unique-xb]

Don't worry friends, , , you can't be like him because you are a normal human being, , , appreciate it!!!

[Goalie]

Give this dude the double rotation question of jee advance bruh

[shouviksingh]

Solve this - A charged particle of mass m and charge q is moving with a velocity v in a uniform magnetic field B. The particle is simultaneously subjected to a uniform electric field E perpendicular to the magnetic field. Using the relativistic Lagrangian formulation, derive the equation of motion for the particle, taking into account the radiation reaction force due to the emission of electromagnetic waves. Assume that the particle's velocity is comparable to the speed of light.

[vikassrivastava]

The sudden claps shows everyone was relieved that he stopped!! 😅😅

[Kiranthakur]

Iam confused how he solved question and student reaction😅😅😅

[अनिर्वचनीयम्]

English + 3 piece suit+ Simple Bernoulli problem=

[us]

There are atleast 15 students whom I known are doing same, this is achieved when children learn scientific concepts instead of learning language concepts...this is simple task....

[msushmitakalla]

Equation of continuity from mechanical properties of fluids it states that the fluid which is flowing through a pipe of variable cross section area in which the fluid velocity remains constant a1v1=a2v2 where av= constant so the sum which he is doing is from equation of continuity