0
How do historical betas adjusted historical betas and fundamental betas differ?
Wiki User
∙ 10y ago
In the investment world, betas refer to the standard deviation between the stock and the market index average. Historical is based on past performance. Adjusted takes into account factors for a clearer interpretation. Fundamental betas often used for predictions assume that the stock is approaching the index current average.
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
Is beta decay affected by Aluminum?
If you have a material that emitts Beta particles there is nothing that will effect that process. However, once the Betas are emitted you can block them with Aluminum or most anything else. How many you block will depend on how fast the Betas are going and how thick your blocking material is.
What change in mass occurs when a radioactive atom emits an alpha particle?
4 from the alpha. Betas have negligible mass and gammas have no mass.
How can you measure volatility using beta?
You can use Beta to measure market volatility because of beta is the elasticity of a stock change as a result of a change in the market. That is, Beta of a sotck is found by comparing the senstivity of a stock's return to the fluctuations in the market.Beta is found by dividing the product of the covwariances of the stock and market retun by the variance of the market.The bench marks of betas are as followed:a risk free investment such as a Tbill (that is guaranteed a return) will have a beta of 0.A portfolio with risk equivalent to the market has a beta of 1.Given those two bench mark, you can gauge at the volatility of the stock/investment by comparing its beta with those two extremes.
Is the negative meson the same as the beta particle?
No. Beta particles are electrons (sometimes positrons, the antiparticles of electrons, are referred to as betas also). "Negative meson" is not a specific particle. It would be a type of particle which is a) a meson, or two-quark hadron, and b) negatively charged. There are several particles which fit that description, but none of them are electrons (or positrons), which are not hadrons but leptons (a type of elementary particle, not made up of quarks at all). --------------------------------------------------------------- No, a beta particle is an electron or positron. Mesons are not produced by radioactive decay, but appear in nature only as short-lived products of very high-energy interactions in matter and are composed of one quark and one antiquark, bound together by the strong interaction. Charged mesons decay (sometimes through intermediate particles) to form electrons and neutrinos. Uncharged mesons may decay to photons.
Why beta particles are potentially harmful to skin than alpha particles?
Alpha particles have high mass and energy and therefore momentum compared to beta particles. An alpha is a helium nucleus (2+) charge, beta is an electron or positron (1- or 1+ charge). The relative high momentum of the alpha particle means there is potential for more ionisation events compared to beta. The 2+ charge increases the probability of each event.Alphas dump their energy in a shorter distance than beta particles. The property that describes this is called stopping power, S, which is both particle (ie alpha/beta) and stopping material (ie skin or plastic, etc) dependant. Stopping power is the change in energy with respect to the penetration depth in the material.S = dE/dx It's usually given in Mev/cm or eV/cm (as opposed to the J/m SI unit). There are tables of this available on the Internet for various particle and material combinations.This has potentially useful and harmful implications. Usefully, a known alpha source can be stopped readily to avoid harmful effects - by using a shielding material. For alpha this could be a think layer of plastic or foil (or even paper). Alphas stop so readily they are significantly impeded by smoke... and hence the smoke detector still found in many houses. Beta takes a bit more material to stop - 1 cm of acrylic plastic is usually sufficient.Now to the question proper - why beta could damage skin more than alpha. Alpha stops in a really short distance. The top portion of one's "skin" is actually dead cells. The incident alphas are likely to be stopped by the dead cells on the top layer of skin, rather than depositing any significant energy in live tissue. Betas on the other hand will travel a few millimetres or a centimetre into human tissue, so a significant dose would be received by the skin from an external beta source. Of course a high energy alpha may actually have enough energy to penetrate the dead layer in the first place, or you may have just ex-foliated or you may have "thin" skin, so don't try this at home.Is the moral of the story than betas are more harmful? NO. Alphas are pretty safe in a box, but don't swallow them! Alphas may have a reputation of not delivering a large skin dose, but if they get to a place like the bloodstream or the stomach, there's no "dead skin shielding" to stop them so you could be in for some radiation poisoning.Don't eat a smoke detector... the batteries make you really ill.
Where do betas originate from?
Answer. I am not to sure about this but I think Betas originated from China
Can spotted puffers be in aquariums with betas?
no. betas don't get along with any fish, even with other betas. they will kill each other.
What kinds of fish do betas eat?
betas are carnivores.try blood worms.
Will boy betas attacks girls betas?
They will attack if they feel threatened.
Do betas like warm or cold water?
Betas like warm water
Why are batas brown in the wild but not in the pet store?
Betas are brown in the wild because some Betas live in mud, and feed off of flys and small insect's. Betas are livebearers. Betas also somtimes eat other fish.
Are betas poisonous?
No they are not.
What colors are betas?
green
What word has betas in it?
betas. it relates the responsiveness of the returns on individual securities to variations in the return on the overall market portfolio
Are male betas scared of mirriors?
They are not scared. They attack the reflection in the mirror. Male betas are aggressive toward other male betas, so when they see there reflection, they flare up and try to attack the "other fish."
What are five things that betas eat?
#
Why did your beta change color and die?
I think because I have had about a hundred betas and every time they were about to die they changed to a different color. yes they do it happened to all my betas before they died and it said on betas .com so I think so!
