Science & Mathematics - 6 December 2007

2007-12-06 21:18:17 · 7 answers · asked by sohan s 1 in Mathematics

Say if jupiters hurricane hit our earth what would it do to the sea and the planet?

2007-12-06 21:00:29 · 4 answers · asked by Anonymous in Weather

Find the equation of the line that passes through the points (-1,2) and (7,-2).

This is what it says in the book

Midpoint=
=(-2-2) / (7+1)
=-4 / 8
=-1 / 2

The answer is 7+2=-1/2(x-7) or y=(-1/2)x+(3/2)

So i guess i need to express it in y=mx+b
I got lost after finding midpoint -1/2. After that, where did 7+2, (x-7), and (3/2) come from? How do i find them?

2007-12-06 20:51:42 · 8 answers · asked by Mzee 3 in Mathematics

I have a hard time understanding how to start and solve this problem....

Q: Write the nuclear reaction equations for the neutron-induced fission of U-235 to form Xe-144 and Sr-90. How many neutrons are formed in the reaction?

2007-12-06 20:48:46 · 5 answers · asked by ecstyle483 1 in Chemistry

I know there are different blood groups, but in short, what is it that makes them different?

2007-12-06 20:47:29 · 7 answers · asked by C4 Snake 3 in Biology

Q.1 Do bases have H+ ions?if yes,then why are they called bases?

Q.2Which of the following,vanilla,olive and clove can be used as olfactory indicators?

2007-12-06 20:47:20 · 2 answers · asked by lost... 5 in Chemistry

'a' and 'b' are two real numbers such that a+b=1.

Show that:

(a+1/a)^2+(b+1/b)^2 >= 25/2

Thanks for your time and consideration.

2007-12-06 20:45:26 · 7 answers · asked by Amir 1 in Mathematics

so where in mumbai i will get job and what post i can get from this qualification basically iam a scince graduate with 0experience in fiel, any job placement consultant address if u have pls send me

2007-12-06 20:45:22 · 2 answers · asked by maqboolbhatkar123 1 in Engineering

... and by changing the place of its digits we come to another power of 2?

Thanks for your consideration

2007-12-06 20:41:54 · 3 answers · asked by Amir 1 in Mathematics

2007-12-06 20:41:32 · 5 answers · asked by Anonymous in Physics

2007-12-06 20:35:51 · 14 answers · asked by Anonymous in Physics

2007-12-06 20:34:18 · 2 answers · asked by Elizabeth 2 in Chemistry

2007-12-06 20:28:53 · 2 answers · asked by knowledge hunter 1 in Physics

(1.2 x 10^13)(-3.3 x 10^-4) / 7.2 x 10^15

The question says Compute and give my answer in scientific notation.
The answer is -7.64x10^6

But i get -5.5x10^-5 ?

2007-12-06 20:26:39 · 6 answers · asked by Mzee 3 in Mathematics

2007-12-06 20:19:54 · 2 answers · asked by knowledge hunter 1 in Physics

According to 1 Kings chapter 7 verse 23 it says pi=3.00 exactly. (just discovered this 2day!).Now there indeed is one in the eye for all you scientist mathematics interlectual wallas!
All this transcendental nonsense obv comes from heathen meditation stuff. We have proved science is not only ungodly and heretic (bcause it contradickts the bible) but wrong..now we can prove all the maths nonsense with its squiggly greek letters instead of real numbers heresy too. I think we should ban all maths books with stuff from pythagoras an euclid since they were heathens too. I mean even if i aint seen a right triangle with hypotenuse square sides an all doesn't mean they don't exist! If science and math was true how come we ain't all monkees still an why we have ten fingers stead of eight? Lookin for support here brother creationists!

2007-12-06 20:01:21 · 26 answers · asked by alienfiend1 3 in Mathematics

2007-12-06 19:58:51 · 9 answers · asked by Joshleejosh L 1 in Medicine

Heres the thing.
I am baby sitting my 13 year old neice,as well as giving her tution.But there are some questions which she faced difficulty and even i could not slove.
Heres the two questions:
John bought 12 boxes of mango at $60 and each box contains x mangoes.15% of it was rotten and could not be sold.If he sells it for 25 cents each,he would make a profit of 70%,find the number of mangoes in each box.

Second Question:
A club comprising of boys and girls has a total of 160 members.If 32 more girls join the club,the percentage of girls will increase by 5%.How many boys are there in the club?

Please help as i have tried sloving the questions but to no avail.(and my neice is getting anxious)

Thanks!(please include working for the questions)

2007-12-06 19:57:56 · 8 answers · asked by ReRe_Sunshine 3 in Mathematics

A point charge q1 is at the origin and second point charge q2 is at infinity. Use a three dimensional system to answer this problem. (x,y and z).

2007-12-06 19:57:10 · 1 answers · asked by duntoktomee 2 in Physics

In October, Comet Holmes "exploded" (maybe not literally---one explanation is that it is simply visible head-on or tail-on; whereas one radio talkshow guest, Richard C. Hoagland, stated he thinks it could have been the focus of an experiment, apparently, to see if an object in distant space could be hit from Earth). Anyway, assuming it literally blew up, what will happen to it? Will it re-form into a comet?

2007-12-06 19:56:40 · 7 answers · asked by The Invisible Man 6 in Astronomy & Space

2 Fe(s) + 3 Cl2(g) 2 FeCl3(s)

Calculate the mass of FeCl3 that is formed if 12.10 g of iron reacts.
i tried it many times, i got 12.10g but that is not the answer.

2007-12-06 19:51:31 · 2 answers · asked by Endiscapable duka ras 1 in Chemistry

1. On a see-saw mass A is 60 kg
and is 1 m from the pivot. Mass B is 30 kg
and mass C is 10 kg. Mass C is 3 m from
the pivot. The see saw is at an angle of 30
degrees from the horizontal. Calculate the
torques of A and C about the pivot and
where you should place mass B for the
torques to balance.



2. As part of a physical therapy program
following a knee operation, a 5-kg object is
attached to an ankle and leg lifts are done as
sketched in the figure. Calculate the torque
about the knee due to this weight for the four
positions shown. from the knee to the weight is 40 cm
the four positions are at 0, 30, 60, 90 degrees.

2007-12-06 19:46:20 · 2 answers · asked by bebop1223@sbcglobal.net 2 in Physics

2007-12-06 19:39:33 · 3 answers · asked by D'Costa... 1 in Engineering

* There are 1000 micrograms in 1 milligram
* There are 1000 milligrams in 1 gram

How many micrograms in 100 grams?

PS - I am sure its pretty easy to calculate, I have worked it out, but just need to double check that my answer is correct.

Cheers!

2007-12-06 19:36:44 · 4 answers · asked by Chimera's Song 6 in Mathematics

A 4.00-g bullet is fired with a velocity of 96 m/s toward a 10.00-kg stationary solid block resting on a frictionless surface.

(a) What is the change in momentum of the bullet if it is embedded in the block?
kg·m/s
(b) What is the change in momentum of the bullet if it ricochets in the opposite direction with a speed of 95 m/s-almost the same speed as it had originally?
kg·m/s

2007-12-06 19:32:31 · 1 answers · asked by Nicky 1 in Physics

if you could show me how you do it step by step i would be very happy thanks

2007-12-06 19:28:32 · 7 answers · asked by Tom Jackson 1 in Mathematics

2007-12-06 19:25:15 · 13 answers · asked by zoeymodelgirl 1 in Astronomy & Space

A string of length L vibrates at its fundamental frequency. The amplitude at a point (1/4)L from one end is 4.10 cm.

What is the amplitude of each of the traveling waves that form this standing wave?


* Can someone help me figure out how to solve this???

2007-12-06 19:24:01 · 3 answers · asked by Professor 1 in Physics

2007-12-06 19:13:47 · 3 answers · asked by abasalon@sbcglobal.net 1 in Earth Sciences & Geology

2007-12-06 19:10:40 · 6 answers · asked by Anonymous in Earth Sciences & Geology