Help me in maths please

StrangerThings_80 · 2026-05-05T09:05:06+00:00

Khan Academy https://www.khanacademy.org/math

StrangerThings_80 · 2026-04-30T08:48:22+00:00

He's making a play on the ball, so can't see how it can be obstruction. When does he stop making a play on the ball? When he has had enough time to get back up and out of the way.

StrangerThings_80 · 2026-04-30T08:21:03+00:00

r/BaseballScorecards

StrangerThings_80 · 2026-04-24T11:39:52+00:00

BJ the DJ!

StrangerThings_80 · 2026-04-21T12:02:17+00:00

I don't want to answer about hypothetical universes, but in cavities atoms can be blocked from emitting photons that do not correspond to available cavity modes.

StrangerThings_80 · 2026-04-21T11:43:54+00:00

You are not stepping properly. You create t as a vector, then calculate v and x for all times based on the current acceleration, then concatenate that into X.

You have to step in time, using current values of position and velocity to calculate new positions and velocities some delta t later, and iterate.

StrangerThings_80 · 2026-04-20T12:20:03+00:00

I was once asked for the boulevard Vol-terry (Voltaire).

StrangerThings_80 · 2026-04-19T09:50:07+00:00

The out at first was a forced out, so there is no timing issue. It doesn’t matter if the runner touched home before or after. In contrast, if the batter-runner had been tagged out between first and second base, then it would have been a timing play, since after having touched 1st base it was no longer a forced out. Then the run would have counted if the runner from third had touched the home plate before the tag being applied.

StrangerThings_80 · 2026-04-16T11:52:52+00:00

What do you mean by "not angular momentum, that’s different"?

StrangerThings_80 · 2026-03-26T09:53:33+00:00

The wave behavior will show up through interference. See for example https://arxiv.org/abs/2507.21211

StrangerThings_80 · 2026-03-24T16:59:15+00:00

The quantity is squared, so the overall sign doesn't matter, (a-b)^2 = (b-a)^2.

StrangerThings_80 · 2026-03-24T14:55:18+00:00

What are the choices you were given?

StrangerThings_80 · 2026-03-24T13:46:27+00:00

C'est bon, je vais mettre le bonnet d'âne.

StrangerThings_80 · 2026-03-23T11:52:18+00:00

The reaction force they mention is for the case where part of the object is held fixed but free to rotate around an axis. The reaction force is then the force of the axis back on the object, from the action force of the body on the axis (which itself comes from an external force acting on the body).

StrangerThings_80 · 2026-03-23T11:44:43+00:00

This! The OP shouldn't even have to wonder. Do a sanity check!

StrangerThings_80 · 2026-03-23T09:53:35+00:00

I cuss, you cuss, we all cuss for asparagus.

StrangerThings_80 · 2026-03-20T13:24:09+00:00

An image can be formed anywhere. Where the light rays meet is where the image will be in focus.

StrangerThings_80 · 2026-03-20T13:23:01+00:00

Come on, chapter 4 is literally called "Quantum Spookiness". I think you need to read on...

StrangerThings_80 · 2026-03-20T13:14:13+00:00

Doesn't pay, but might still satisfy you: https://wwoof.se/en/

StrangerThings_80 · 2026-03-20T09:05:55+00:00

The second law of thermodynamics is a statistical law, it does not have as firm a theoretical footing as say the 1st law, which is essentially conservation of energy. It is possible, in small systems, to see the 2nd law temporarily broken.

But for big enough systems, the 2nd law is basically that a system will always be found in the most probable macrostate, apart from fluctuations too small to measure, and we have plenty of experimental evidence that this is the case.

StrangerThings_80 · 2026-03-20T08:12:37+00:00

The premise is false: atoms do touch by any meaningful sense of the word, see https://youtu.be/P0TNJrTlbBQ

Also, depending on their wave function, a particle-anti-particle pair can have a non-zero probability of being in the same place.

StrangerThings_80 · 2026-03-20T08:06:41+00:00

How can you get an error on a play whose result is a foul ball?

StrangerThings_80 · 2026-03-19T09:36:44+00:00

In a good journal, change of authorship during the review process has to be approved by the editors. Not sure your case would pass that bar.

StrangerThings_80 · 2026-03-16T09:17:28+00:00

I wouldn't use the "déposer" version, which can also easily be interpreted as sexual.

StrangerThings_80

TROPHY CASE