I noticed a bunch of people who've gotten a lot of tests coming up soon, myself included, and thought I should make a fyreball for people to ask their questions about physics, english, french, math, whatever, and other people would answer them. Sort of like Yahoo's Answers, but Fyreball-style!
Anyway, there are several rules:
No spamming.
No swearing. If you think someone is wrong, then correct them politely and tell them the right answer.
Oh yeah, to tell someone the answer, make sure to specify their name, or else no one will know who you're talking to.
Okay, I have my own question.
In science, what are the factors that affect the viscosity of a fluid and explain it in detail.
thanks!
Delta0Medusa
i learned that last year, hold on...(sprints to find textbook)
Deacon
To begin - this will not be in detail - but temperature is one of the main factors that affects viscosity of a fluid. This is because the bonds between molecules may be affected by temperature...part of the larger piece of chemistry that a substance may move between different states of matter based on temperature (water >ice / water >steam).
In some lubricants, the viscosity of the fluid (i.e the rigidity of its molecular bonds) can double within a change of +- 5 C.
Delta0Medusa
Ok i got it...o, it looks like Deacon beat me to the punch
reporned44
lol :P
anyway thanks deacon
this fyreball wouldn't exist if i were listening in class...
Delta0Medusa
Delta0Medusa
I would not have lost a pound running around looking for my old textbook, if you had paid attention...
reporned44
hey - at least you burned some calories.
Delta0Medusa
Husker
How come when I put quadratic equations(i.e. x^2+5x+25) into my TI-83 calculator it comes out as some decimal(becomes 59.390625) instead of a simplified equation?
Delta0Medusa
Chimerea
Because you don't have a casio calculator. Everyone knows that TI-83's are terrible. Casio is the ruler of the calculator world.
LackOKnowledge
maybe because you're using radial mode
1337 LOLSER
Does anyone really listen in class? I really just think of getting back at people. Cheating. AND most of all HALO3.
Night Reaper5
good point boo\mbed spartan i'm just zoned out because i'm so bored i will usually think abbout halo3 or look at pretty girls :p
Night Reaper5
whoops i meant bombed spartan
reporned44
unfortunately Night Reaper5, there are no pretty girls in my class D:
all of them are butt ugly
Kiefs
"How come when I put quadratic equations(i.e. x^2+5x+25) into my TI-83 calculator it comes out as some decimal(becomes 59.390625) instead of a simplified equation?"
Because it puts it into a decimal automatically, that calculator doesn't put it in lowest radical. Just manually use the quadratic formula, not that hard.
Husker
ok then,id like to see you work and assemble 16 blocks with 4 expressions each,matching the equal ones with each other.And I mean not problem and answer.i mean two different expressions that are equivalent,meaning you do 64 of those problems and relook and match. that seem easy to you?
DeusJZ
In reply to reformed44:
You're lucky. Our high school isn't co-ed.
I have a question:
What is the probability of a sword of .5 inches missing a target 1.5 inches wide of 7 inches (square) if you were to try 29 times?
Kamahl
"Because it puts it into a decimal automatically, that calculator doesn't put it in lowest radical. Just manually use the quadratic formula, not that hard."
You can use the >Frac option in the math menu, but if it contains surds, use the quadratic formula.
Kiefs
"ok then,id like to see you work and assemble 16 blocks with 4 expressions each,matching the equal ones with each other.And I mean not problem and answer.i mean two different expressions that are equivalent,meaning you do 64 of those problems and relook and match. that seem easy to you?"
you should have put that down with your problem, then I would have faced it differently.
Husker
Ok,can someone give me an in depth explanation of Einstein's theory of Relativity?
Husker
Add some text...The concept of mass–energy equivalence unites the concepts of conservation of mass and conservation of energy, allowing rest mass to be converted to forms of active energy (such as kinetic energy, heat, or light) while still retaining mass. Conversely, active energy in the form of kinetic energy or radiation can be converted to particles which have rest mass. The total amount of mass/energy in a closed system (as seen by a single observer) remains constant because energy cannot be created or destroyed and, in all of its forms, trapped energy exhibits mass. In relativity, mass and energy are two forms of the same thing, and neither one appears without the other.
Husker
Mass–energy equivalence says that when a body has a mass, it has a certain energy, even when it isn't moving. In Newtonian mechanics, a massive body at rest has no kinetic energy, and it may or may not have other (relatively small) amounts of internal stored energy such as chemical energy or thermal energy, in addition to any potential energy it may have from its position in a field of force. In Newtonian mechanics, none of these energies contributes to the mass.
In relativity, all the energy which moves along with the body adds up to the rest energy of the body, which is proportional to the rest mass of the body. Even a single photon traveling in empty space has a relativistic mass, which is its energy divided by c2. If a box of mirrors contains light, the mass of the box is increased by the energy of the light, since the total energy of the box is its mass.
Although a photon is never "at rest", it still has a rest mass, which is zero. If an observer chases a photon faster and faster, the observed energy of the photon approaches zero as the observer approaches the speed of light. This is why photons are massless. They have zero rest mass even though they have varying amounts of energy and relativistic mass. But, systems of two or more photons moving in different directions (as for example from an electron–positron annihilation) may have zero momentum over all. Their energy E then adds up to an invariant mass m = E/c2, when they are considered as a system.
This formula also gives the amount of mass lost from a body when energy is removed. In a chemical or nuclear reaction, when heat and light are removed, the mass is decreased. So the E in the formula is the energy released or removed, corresponding to a mass m which is lost. In those cases, the energy released and removed is equal in quantity to the mass lost, times c2. Similarly, when energy of any kind is added to a resting body, the increase in the mass is equal to the energy added, divided by c2.
Husker
In physics, quantum mechanics is the study of the relationship between quanta and elementary particles. Among other relationships the valence shell electrons and photons are quantized. Quantum mechanics is a fundamental branch of physics with wide applications in both experimental and theoretical physics. Quantum theory generalizes all classical theories, including mechanics, electromagnetism (except general relativity), and provides accurate descriptions for many previously unexplained phenomena such as black body radiation and stable electron orbits. The effects of quantum mechanics are typically not observable on macroscopic scales, but become evident at the atomic and subatomic level.
reporned44
this is in a layman's point of view, but i think it's when you're moving, time gets distorted and moves slower. like if you're moving at the speed of light, time would pass by very slowly.
Husker
i thought it means as you move faster you get heavier or something,so it would be impossible to achieve lightspeed.
Kiefs
Time stops when you reach the speed of light (3.00x10^8 m/s)
Of course time is just a unit of measurement.
defnop
is time Cyclical ???? ha ha no one knows but i would assume not.
SpankyMcTrolly
Cool fyreball! Yeah isnt it weird...time doesnt exsist. all it is, is a measurement that man created.