Science & Mathematics - 19 January 2007

2007-01-19 12:14:20 · 4 answers · asked by sailorzfire 1 in Chemistry

what type of spider is it? we've always been curious and always think they're black widows

2007-01-19 12:14:09 · 3 answers · asked by hatchet juggalette 3 in Zoology

Ok, i know everything about charged particles attracting if they're opposites, but if earth is neutral, what provides the force to pull the neutrons from the clouds(negative cahrge) to earth and create lightnign?

Is the answer polarization? im kinda confused help plz

2007-01-19 12:13:24 · 14 answers · asked by Anonymous in Physics

2007-01-19 12:13:05 · 6 answers · asked by jimmy f 1 in Mathematics

The equation for the reaction described in the question is NH4Cl (s) --> NH3 (g) + HCl (g)

Any help is appreciated!

2007-01-19 12:11:18 · 2 answers · asked by Random G 3 in Chemistry

I am getting confused by this problem and really need an explaination of how to work this one out. please will someone help me?

2007-01-19 12:11:16 · 7 answers · asked by flower67 1 in Mathematics

2007-01-19 12:10:18 · 9 answers · asked by Anonymous in Mathematics

My husband thinks that because identical twins have different finger prints then they don't have identicle DNA. I thought that identical twins were the same egg and same sperm but later the egg splits into two after being fertillised. This would make the twins have exactly the same DNA wouldn't it? Every finger has a different print on it, I mean your 8 fingers and thumbs would have different prints.

2007-01-19 12:10:09 · 12 answers · asked by gemwi 2 in Biology

When goofing around with a magnet, one will find that some small stuff (with some Fe in it) will become magnetized (to whatever degree).

What would be required to magnetize something of pretty substantial size - like a fire hydrant or a manhole cover or the side of a car ?

All kinds of stuff could be magnetized - just for laughs - if it's practical to do so. (I don't need admonitions about the potential damage/problems that magnets can cause).

And would it stay magnetized ?

2007-01-19 12:08:16 · 2 answers · asked by roland_reardon 2 in Physics

When goofing around with a magnet, one will find that some small stuff (with some Fe in it) will become magnetized (to whatever degree).

What would be required to magnetize something of pretty substantial size - like a fire hydrant or a manhole cover or the side of a car ?

All kinds of stuff could be magnetized - just for laughs - if it's practical to do so. (I don't need admonitions about the potential damage/problems that magnets can cause).

And would it stay magnetized ?

2007-01-19 12:06:06 · 4 answers · asked by roland_reardon 2 in Engineering

OKay, pleeeassse don't attack me, i don;t mean to insult christianity, god, or anything like that, i just want to ask an honest question. For the people who belive in the possibility of aliens, have you ever thought, that a person who came to earth so...enlightened, so advanced in his thought of peace for humanity, and claimed to be so understanding....maybe its possible he's an alien....but don't think of 'alien' as little green men. you have to think of it in other terms, like, of another matter in the universe...err, it kinda hard to explain my reasoning for my question, but please try to understand without being blatantly mean!

2007-01-19 12:03:46 · 11 answers · asked by Anonymous in Astronomy & Space

expanding isothermally from the initial pressure of 5 atmosphers to the final pressure of 3 atmospheres ,at the temperature of 0 C?

2007-01-19 12:02:27 · 1 answers · asked by zizi m 1 in Chemistry

2007-01-19 11:58:15 · 2 answers · asked by goring 6 in Astronomy & Space

2007-01-19 11:56:28 · 1 answers · asked by ryan s 1 in Other - Science

Oscar, Dodong,and Jimmy are three friends. Their last names are Santos, Paterno and Ramos, but necessarily in that order.
They all spent shopping one Saturday. Oscar spent exactly twicw as much as Dodong; and Dodong spent exactly twice as much as Jimmy. Santos spent exactly P12.65 more than Ramos.
What is each person's full name?

2007-01-19 11:55:56 · 3 answers · asked by turnip_heart331 2 in Mathematics

Many people are interested in losing weight through exercise. An important fact to consider is that a person needs to burn off 3,500 calories more than he or she takes in to lose 1 pound, according to the American Dietetic Association. The following table shows the number of calories burned per hour (cal/h) for a variety of activities, where the given value are based on a 150 pound person.

Joggin - 5 mi/h then 740 cal/ h

then my question is
How many hours of jogging at 5 mi/h would be needed for a 200-pound person to lose 5 pounds? (Again, assume calorie consumption is just enough to maintain weight, with no activity.)

2007-01-19 11:52:44 · 4 answers · asked by Pushpendra C 1 in Mathematics

2007-01-19 11:52:33 · 3 answers · asked by bpaulyg 1 in Engineering

2007-01-19 11:51:13 · 6 answers · asked by Baby~D R 1 in Chemistry

2007-01-19 11:48:59 · 5 answers · asked by goring 6 in Astronomy & Space

make hypothesis about the effect of temperature on reaction rate.

2007-01-19 11:46:23 · 2 answers · asked by help ^_^ 1 in Chemistry

at 20 C from 1 to .3 atmosphere of pressure.

2007-01-19 11:46:20 · 1 answers · asked by Anonymous in Physics

The lower the price, the better, but interested in all responses.

2007-01-19 11:44:43 · 4 answers · asked by mindundermatter 1 in Mathematics

please explain and i mean the planet (plus i dont need websites.....)

2007-01-19 11:42:43 · 8 answers · asked by LuvNatalie 3 in Astronomy & Space

I have a project Due and i need to know what it is in easy sentences.

2007-01-19 11:42:36 · 3 answers · asked by Anonymous in Earth Sciences & Geology

2007-01-19 11:41:20 · 3 answers · asked by Anonymous in Physics

The integral of 1 / Sqrt(1+x^3)

2007-01-19 11:41:18 · 3 answers · asked by Scythian1950 7 in Mathematics

are we infact nt living a 24 hour day bt either more or less? does this mean in teory we are loosing time, are ancestors used time 2 roughly gauge the time of day and are presnce in the year but, in modern times the difference between bein a minutelate can change are day completely, so are we infact owed time?

2007-01-19 11:39:39 · 20 answers · asked by jay jay 1 in Mathematics

ok so the planarian belongs to the same phyum as the what and what?

2007-01-19 11:39:20 · 2 answers · asked by ajhkgfhjdfgksj 5 in Biology

(y-8) + (1 /y-8)
I got y-8 / 1

Im not sure please heLPP!!
Thankyou very very much

2007-01-19 11:37:52 · 3 answers · asked by coolman 1 in Mathematics

If Earthquake 1 measures 7.3 on the Richter scale, and Earthquake 2
measures 8.3 on the Richter scale, how many times bigger was Earthquake
2 than Earthquake 1? (Rephrased: By what factor was Earthquake 2 bigger
than Earthquake 1?)

2007-01-19 11:36:54 · 7 answers · asked by stefanie n 1 in Mathematics