Science & Mathematics - 6 August 2007

Is there a simple home test you can do or do you have to have it tested professionally in a laboratory?

2007-08-06 23:56:44 · 5 answers · asked by dusty 4 in Chemistry

Why is it that when passengers sliding off a car seat on to the ground sometimes experience an electrical shock???

2007-08-06 23:54:37 · 2 answers · asked by sdjfhdkjsfgkuae 2 in Engineering

A star is a sun but its further away from our planet. The sun is our closest star!! Right or Wrong??

2007-08-06 23:52:37 · 27 answers · asked by Yorkshire Gurlie ♥ 3 in Astronomy & Space

then
is n a prime number
If yes how and if no how

2007-08-06 23:34:48 · 4 answers · asked by arpit m 2 in Mathematics

4^(n/2) x c^(n - 1) x 6^(1 - n)

2007-08-06 23:22:35 · 3 answers · asked by Anonymous in Mathematics

The letters r and theta represent polar coordinates. Write each equation in rectangular coordinates (x, y) form.

Let t = theta

(1) r = sin(t) + 1

(2) r = sin(t) - cos(t)

2007-08-06 23:20:09 · 2 answers · asked by journey 1 in Mathematics

i wanna know,,,,,,,,

2007-08-06 23:03:32 · 4 answers · asked by Anonymous in Zoology

2007-08-06 22:57:20 · 2 answers · asked by Anonymous in Physics

i thought air friction was needed to alter the trajectory of a space craft

2007-08-06 22:41:48 · 14 answers · asked by willoug 2 in Astronomy & Space

When your in a plane it looks like your up in the clouds but can you actually touch them ?

2007-08-06 22:39:06 · 18 answers · asked by Anonymous in Weather

there is an association between the colour of olives preferred by respondents and the region in which they live. State your conclusion clearly

Region ....black olives green olives Total
West .......65 .................53 ................118
East ........59 .................76 ................135
South ......48 .................42 ................90
Total .......172 ..............171 ..............343

2007-08-06 22:27:22 · 7 answers · asked by Anonymous in Mathematics

what's really happining in bermoda triangle?

2007-08-06 22:10:38 · 11 answers · asked by Anonymous in Geography

2007-08-06 22:09:43 · 4 answers · asked by JOLLIVIE E 1 in Medicine

2.find the sum of the term from the (n+1)th to the mth term inclusive of a arithemetrical progression whose first term is a and whose second term is b, if m=13,n=3 and the sum is 12a find the ratio b:a

2007-08-06 21:59:34 · 1 answers · asked by sikirutaye 1 in Mathematics

The cost $C, for the production of x units of a certain product is given by C=(x+10)^3 Find the value of x for which the average cost per unit is a minimum and find this minimum average cost

2007-08-06 21:49:56 · 2 answers · asked by Scaryhunter 2 in Mathematics

1. f(x)=3x+5=7
2. f(x)= 3/2x-4=5
3. f(x)=5x-7
4. f(x)= -4/5x+4

2007-08-06 21:47:40 · 2 answers · asked by Anonymous in Mathematics

2007-08-06 21:44:11 · 5 answers · asked by czarie09 1 in Physics

I would like to know if anyone has found the end of a rainbow,if so,where,and when........................

2007-08-06 21:39:09 · 6 answers · asked by pinesy 1 in Weather

here it is: 1 kg of water is heated together with 1 kg of iron. which of these two would require a greater amount of heat?

correct me if i'm wrong. this is what i think: water would require a greater heat because it has a greater heat capacity.

2007-08-06 21:38:40 · 5 answers · asked by lahdeedah20 1 in Physics

2007-08-06 21:34:09 · 5 answers · asked by Anonymous in Chemistry

what did winter mean ?

2007-08-06 21:12:09 · 5 answers · asked by Anonymous in Weather

The function
f(x) = x^(1/3)
is to be tabulated on the interval [1, 10] with constant mesh spacing.
(a) How many points are required for piecewise linear interpolation to yield five decimal places accuracy?
(b) What convenient step size would you choose in practise?

2007-08-06 21:11:10 · 1 answers · asked by David C 1 in Mathematics

once paula came 15mins later and peter saw 6 buses depart. the 2nd time paula came 26 mins later and peter sadly watched 8 buses depart. but the next time peter came 43mins later than paula. How many buses departed the interchange while Paula was waiting for Peter?
find all possible answers
plz help peoples im baffled by this question

2007-08-06 21:06:30 · 2 answers · asked by ninja 2 in Mathematics

There are 7 girls in a bus.
Each girl has 7 bags.
Each bag has 7 big cats.
Each big cat has 7 small cats.
How many nipples are there in the bus?
Note: each cat has 7 nipples.

2007-08-06 21:06:27 · 7 answers · asked by kathi S Niti 1 in Mathematics

2007-08-06 20:58:54 · 4 answers · asked by Anonymous in Weather

2007-08-06 20:57:32 · 9 answers · asked by Anonymous in Weather

2007-08-06 20:49:31 · 11 answers · asked by Anonymous in Geography

1. f(x)=5x-8
2. f(x)= -5/3x+12
3. f(x)=18+3x

2007-08-06 20:48:23 · 2 answers · asked by Anonymous in Mathematics

Find the linear function whose graph is perpendicular to the graph of given equation and passes through the given point.Use the slope-intercept form.
1. 5x+2y=10; (3,-5)
2. 3x+y=5; (2,-4)
3. 5x-3y=7; (8,-2)
4. 3x+8y=4; (0,4)
5. 3x-y=4; (2,7)
6. 2x-y=5; (-1,4)
7. -3x|+y=7; (-3,1)
8. 3x-y=2; (6,-1)

2007-08-06 20:40:22 · 3 answers · asked by Anonymous in Mathematics

it would be appreciated the choices are:
1s2, 2s2,2p6,3s2,3p6,4s1
1s2, 2p1
1s2,2s2,2d2,2p6,3p6

2007-08-06 20:35:58 · 4 answers · asked by Anonymous in Chemistry