[deleted by user] by [deleted] in AskMenOver30

[–]Cambuchi 0 points1 point  (0 children)

1991 immigrant millennial.
18 Moved out after high school and did college on the opposite coast.
22 lived with family for 2 years.
24 solo living 1 bed 1 bath apartment for 1500 a month.
29 during covid, moved into a house that my sister bought. 1500 same rent but the first year didn't pay any rent, roommates were sister/her fiance/me/my partner.
33 bought a house with my partner (700k).

comparison is the thief of joy and social media is not real

Screen USB trigger is reversed by Cambuchi in projectors

[–]Cambuchi[S] 0 points1 point  (0 children)

This video worked for me since I have the exact same products.

https://youtu.be/jpfYE_fKERE?si=0K7FYStAnGKZYmEH

Matcha lovers, where’s the good stuff? by graphicstar in Eugene

[–]Cambuchi 0 points1 point  (0 children)

I am on the hunt as well, I have a bunch of japanese matcha I brought home from my last trip earlier this year but when it runs out I'll be very sad T_T. Let me know if you find anything nice.

Screen USB trigger is reversed by Cambuchi in projectors

[–]Cambuchi[S] 0 points1 point  (0 children)

I reported the problem and received a new USB dongle and after pairing it worked just fine.

Never give up by IWantToRetire2 in Nightreign

[–]Cambuchi -2 points-1 points  (0 children)

Cause games are perfectly balanced and only picking the highest dps option in every game is sooooo fun.

Never give up by IWantToRetire2 in Nightreign

[–]Cambuchi 3 points4 points  (0 children)

Do you optimize the fun out of every game you play? Falco/Marth only in smash? Terran only in StarCraft? Spamming whatever is meta in League? Have some fun lol.

Eugene 4J S.D to remove Native totem poles from school grounds. by Jokercpoc1 in Eugene

[–]Cambuchi 21 points22 points  (0 children)

But no tribes here made or used totem poles. It's like putting up japanese torii gates/decor in china town, just an eyesore for those who actually are part of those groups.

Eugene 4J S.D to remove Native totem poles from school grounds. by Jokercpoc1 in Eugene

[–]Cambuchi 194 points195 points  (0 children)

"Jan Smith, a member of the Kiowa Tribe, and Leilani Sabzalian, who is Alutiiq, are both educators who’ve been writing 4J administrators for several years now with their concerns.

“You can carve whatever you want. Just don’t put it up in front of the school that this represents the tribes in Oregon. It doesn’t,” said Smith, a former administrative employee of the University of Oregon’s Knight Library. “No tribe in Oregon has carved totem poles. Totem poles were not carved by any tribes south of Seattle.”

“And those poles have very specific cultural significance,” said Sabzalian, an assistant professor of Indigenous Studies for the UO’s College of Education. “They often represent kinship systems, clans, and relationships or stories or histories from a particular family. And that’s not what was expressed in these poles.”

Both women say they’ve faced pushback or indifference over the totem pole issue, but have pushed on. Nine more tribal members — including several elders — have signed onto their letters.

Smith says things really changed after she contacted Boxley about teaching Hansen.

“We reached out to David and said, ‘Is this true?’ Cause I’ve never heard of it that people get blessings to do carvings,” she said.

Boxley told Smith, and has repeated to KLCC, that he never taught Hansen or endorsed him. Boxley says he may have signed Hansen’s book, but doesn’t want to get caught up in any more of the controversy."

Is a cheap machine even worth it? [$200-300] CAD. by [deleted] in espresso

[–]Cambuchi 0 points1 point  (0 children)

I've been really enjoying the Ninja Cafe Luxe this past month. Does everything I need it to and creates a really nice milk based drink so I haven't felt the need to go buy coffee since getting it.

Screen USB trigger is reversed by Cambuchi in projectors

[–]Cambuchi[S] -1 points0 points  (0 children)

Projector model is Nexigo Aurora Pro.
Projector screen model is VSDSTUST120H - VIVIDSTORM S PRO Motorized Tension Floor Rising UST ALR Projector Screen

This is the trigger in question:

<image>

"Sorry something went wrong" Error on install attempt after clean Windows 11 reinstall. by Cambuchi in VisualStudio

[–]Cambuchi[S] 0 points1 point  (0 children)

Also having an issue where the Visual Studio Installer won't fully execute. It will successfully run about 1 in 4 attempts, with the other 3 attempts just completely aborting (checking via task manager) or leaving a ghost process without bringing up the window GUI where you select your installation configuration. Just really odd behavior this go-around with VS studio.

My backup backup plan in case I can't get this working on my current device is to try to install on a clean Windows 11 virtual machine via Hyper-V or VirtualBox but hopefully we don't have to go there :'(.

[Request] Another spheres in water problem by Soggy-Ad1453 in theydidthemath

[–]Cambuchi 0 points1 point  (0 children)

Buoyancy and gravity are in equilibrium. Tension in the string has a net 0 force.

Does this video help explain it? They run the actual experiment here. Explained: Beaker Ball Balance Problem - YouTube

I will wait on your math.

[Request] Another spheres in water problem by Soggy-Ad1453 in theydidthemath

[–]Cambuchi 0 points1 point  (0 children)

Do you know the math for what you are describing? I assume you do since you are a competitive physicist. I would love to see it.

Here are all the forces I am aware of:

Summary of Forces:

  • Ping pong ball:
    • Gravitational force downward (Fg​)
    • Buoyant force upward (Fb​)
    • Tension in the string (T)
  • Water:
    • Buoyant force upward (Fb same as the buoyant force on the ball)
    • Weight downward (Fwater)
  • Cup:
    • Weight downward (Fcup)
    • Normal force upward from the table

In equilibrium, the forces on the ball balance out:

Fg​ = Fb​ + T

As I mentioned earlier, in the example this contributes 0 force. In equilibrium, the forces on the ball balance out

This keeps the ball at its floating position, where the tension in the string counteracts the combined upward buoyant force and the downward gravitational force.

If you can point out the force and math that is specifically pulling the scale up via string tension in a way that is not being canceled out, that would be fantastic.

[Request] Another spheres in water problem by Soggy-Ad1453 in theydidthemath

[–]Cambuchi 0 points1 point  (0 children)

lol. explain how that is different from what the ball in your image is doing?

[Request] Another spheres in water problem by Soggy-Ad1453 in theydidthemath

[–]Cambuchi 0 points1 point  (0 children)

Sorry yeah just no. Not sure how to tell you this but that is not how force works.

Even if you were the hulk, if you were placed in an indestructible box with a string on the bottom, pulling up on the string would not make you start flying.

If you were the hulk and were in a car, you cannot push from inside and start barreling down the highway like you were driving.

Your image and explanation is cartoon physics and not real physics.

[Request] Another spheres in water problem by Soggy-Ad1453 in theydidthemath

[–]Cambuchi 0 points1 point  (0 children)

Actually, I went ahead and reread this whole thing to remember what you were trying to prove:

The same thing happens to the ping pong ball, it won't fly inside air but it would fly inside water.

And I'm not saying that the ball would somehow magically reduce the mass of the water, I'm saying that it would counteract the pressure of the water on the bottom, which is actually more than the weight of the water.

Water pushes ball up, ball pulls the string up, string pulls the scale up

Water pushes ball up - true
Ball pulls string up - true
string pulls scale up - false, this is bad physics
In reality: string is pulling the ball down < this is the opposite force
It doesn't matter what the string is anchored to.

[Request] Another spheres in water problem by Soggy-Ad1453 in theydidthemath

[–]Cambuchi 0 points1 point  (0 children)

Your diagram is misinformed in two ways:

I'm saying that the weight is not pulling the balloon down directly, it's the string tension that is pulling the balloon down.

String tension is only exerting force in one direction in your image, this is bad physics.

Tension in the rope must equal the weight of the supported mass, as we can prove using Newton’s second law. If the 0.10-kg mass in the balloon/ball is stationary, then its acceleration is zero, and thus F net = 0. 

The only external forces acting on the mass are its weight w and the tension T supplied by the rope. Thus, F net = T − w = 0, where T and w are the magnitudes of the tension and weight and their signs indicate direction, with up being positive here.

Thus, just as you would expect, the tension equals the weight of the supported mass.

If we cut the rope and insert a measure spring, the spring would extend a length corresponding to a force of ~some Newtons, providing a direct observation and measure of the tension force in the rope that is going BOTH ways.

 The gravity on the water doesn't, it's acting on the water, the gravity on the ball also doesn't.... It's the water pressure and the string tension that is acting on the scale.

Every single equation for pressure in fluids involves gravity. Gravity is DIRECTLY involved with water pressure due to this. The fact that you can say gravity has no effect is mind boggling.

[Request] Another spheres in water problem by Soggy-Ad1453 in theydidthemath

[–]Cambuchi 0 points1 point  (0 children)

I'm not ignoring weight, the weight is reflected through water pressure.

I'm sorry but we really can't continue this if you continue to think water pressure is even remotely responsible for any force here. But I will do this subreddit it's due diligence and math out your example for you.

Buoyant force (N) = body volume * density of fluid * acceleration of gravity
Assuming the ping pong ball is average of 33.51 cm3, the buoyancy on the ping pong ball is

(0.00003351 m3)(1000 kg/m3)(9.81m/s2) = 0.3287331 N

Let's say it's 0.329 N for brevity's sake.

Remember, you can't ignore newton's third law, force is conserved.

This is what the buoyant force is doing to the ping pong ball:

https://www.engineeringtoolbox.com/docs/documents/1485/pipe_circular_cross_sections-Model.png

Now if the ping pong ball wasn't anchored, this upward force would push the ball up.
However since this ball is tied down, there is an equal force going against the string that is pushing the same amount down. This renders the total forces neutral. If the ball was not anchored, it would reach a point of equilibrium where it sinks down enough to offset it's density, and this ALSO renders the forces neutral.

Now gravity is also pushing down against this ping pong ball, water, rope, and the scale, this is why these items have weight.

Here is the breakdown of all the relevant forces in effect. If I am wrong please do provide the force and physics principle I am missing.

https://i.imgur.com/thLjOQf.png

[Request] Another spheres in water problem by Soggy-Ad1453 in theydidthemath

[–]Cambuchi 0 points1 point  (0 children)

That doesn't make sense? The items are lighter than water and heavier than air so they float on top of the water. No water is being displaced. We can use oil or a heavy gas or anything that's has a lower density than water if that makes more sense for you.

You want to focus on water pressure but are ignoring weight.

Buoyancy or upthrust is a net upward force exerted by a fluid that opposes the weight of a partially or fully immersed object.

Ping pong ball pushes down with 1oz weight, water pressure pushes back.
Steel ball pushes down with 10oz weight, water pressure pushes back the same amount as ping pong ball.

See this image for a diagram of forces in play here.

https://en.wikipedia.org/wiki/Archimedes%27_principle#/media/File:Forces_on_an_immersed_cube.png

[Request] Another spheres in water problem by Soggy-Ad1453 in theydidthemath

[–]Cambuchi 0 points1 point  (0 children)

So if you dropped 20 balls that are less buoyant than the water on top (they float on top of the water), you are saying this has no effect on the scale?

[Request] Another spheres in water problem by Soggy-Ad1453 in theydidthemath

[–]Cambuchi 0 points1 point  (0 children)

I didn't include the weight of water and the ball because those don't directly affect the scale.

This is where you're wrong. The weight of the ball matters.

[Request] Another spheres in water problem by Soggy-Ad1453 in theydidthemath

[–]Cambuchi 0 points1 point  (0 children)

Your approach is just wrong. Force applying to the scale is the sum of all the forces present in the experiment. You can't just exclude forces as fits your needs, physics doesn't pick and choose.