Post: Ask Me Physics Questions
04-06-2012, 05:51 PM #1
elfmotat
Rᵤᵥ - ½gᵤᵥR ∝ Tᵤᵥ
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07-07-2012, 07:16 AM #29
elfmotat
Rᵤᵥ - ½gᵤᵥR ∝ Tᵤᵥ
Originally posted by epiccJamess View Post
Why can't i fly

why


My guess would be you're too fat and can't afford two seats.

Originally posted by Just4Hax View Post
What are your thoughts on the Higgs boson? And what exactly does that mean, I think I get the basic basic jist of it.


Detection of the Higgs boson is essentially one of the only ways of experimentally confirming the Higgs mechanism, which is an essential part of the Standard Model. The Higgs mechanism is essentially this: particles interact with the Higgs field (a scalar field*) and how strongly they interact with it determines its mass. The Higgs boson is an excitation** of the Higgs field, just like the photon is an excitation of the electromagnetic field. The reason the Higgs is so hard to detect is because of its mass - it's extremely massive for a fundamental particle. The more massive the particle, the harder (more energy required, i.e. E=mc²) it is to create. It also decays very rapidly.


*Scalar field - every point in space (x,y,z) is assigned a value Φ. Basically, you tell me the point P=(x,y,z) that you're talking about, and I'll tell you the corresponding value Φ.
**Excitation - basically the field is "excited" or more energetic. A part of the field becomes energetic and sort of "breaks off" as a particle.

Originally posted by RedFlowz View Post
A football is kicked at an 50 degree angle to the horizontal , travels a horizontal distance of 20m before hitting the ground. What is the initial speed?


Well, the vertical distance from the ground as a function of time is the following:

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So to find the time t at which the ball hits the ground, we simply set y(t)=0:

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Now, the horizontal distance is given by:

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So now we simply plug in the time we found above to get the horizontal distance the ball it traveled when it hit the ground:

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(I made use of the fact that 2sin(x)cos(x)=sin(2x).) Now we simply solve for the initial velocity in terms of the angle and distance traveled:

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If you plug in 50 degrees for θ and 20m for x, you should get approximately v_0=14.1 m/s^2.
07-07-2012, 11:01 AM #30
Just4Hax
"I will speak ill of
Originally posted by elfmotat View Post
Detection of the Higgs boson is essentially one of the only ways of experimentally confirming the Higgs mechanism, which is an essential part of the Standard Model. The Higgs mechanism is essentially this: particles interact with the Higgs field (a scalar field*) and how strongly they interact with it determines its mass. The Higgs boson is an excitation** of the Higgs field, just like the photon is an excitation of the electromagnetic field. The reason the Higgs is so hard to detect is because of its mass - it's extremely massive for a fundamental particle. The more massive the particle, the harder (more energy required, i.e. E=mc²) it is to create. It also decays very rapidly.


*Scalar field - every point in space (x,y,z) is assigned a value Φ. Basically, you tell me the point P=(x,y,z) that you're talking about, and I'll tell you the corresponding value Φ.
**Excitation - basically the field is "excited" or more energetic. A part of the field becomes energetic and sort of "breaks off" as a particle.

Alright thanx. I've also heard some speculate this could help link things on a quantum level to the larger scale forces. Does that have any weight?
07-21-2012, 11:41 PM #31
Shepleklet
u mad cuz ur ***git
Originally posted by elfmotat View Post
Ask me questions about physics and I'll respond to the best of my ability.


This is probably going to sound like a retarded question, but since the Higgs boson is the the only particle in the standard model not to be found yet, it really interests me. Anyway - since it's the "mass giving" particle, and humans contain mass (so does any physical object), does that mean that the higgs boson can be potentially found inside us / inside any object? Or is it more of a type of thing that gives something mass and then just fucks off and hides like a quantum pussy?
07-23-2012, 07:02 PM #32
elfmotat
Rᵤᵥ - ½gᵤᵥR ∝ Tᵤᵥ
Originally posted by Shepleklet View Post
This is probably going to sound like a retarded question, but since the Higgs boson is the the only particle in the standard model not to be found yet, it really interests me. Anyway - since it's the "mass giving" particle, and humans contain mass (so does any physical object), does that mean that the higgs boson can be potentially found inside us / inside any object? Or is it more of a type of thing that gives something mass and then just fucks off and hides like a quantum pussy?


The Higgs was actually found, as of this July.

It's not the Higgs-boson itself which gives particles mass, it's the fact that other particles interact with the Higgs field. The Higgs-boson is just an energetic part of the field, which allows experimenters to confirm the existence of the Higgs field. You're not going to find any Higgs-bosons in your body (it takes an absurd amount of energy to create them and they decay very rapidly), but every particle with mass in your body does interact with the Higgs field.
08-11-2012, 11:18 PM #33
ResistTheSun
In Flames Much?
What is next after the higgs boson ? Smile
Can fate be explained ?
08-21-2012, 10:05 PM #34
I've wondered this for a while- How is antimatter created? Although I'm guessing this is more Chemistry than Physics.

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