Science & Mathematics - 21 September 2006

2006-09-21 15:42:53 · 5 answers · asked by Dom 2 in Chemistry

What would happen if a human were to be outside the space station without a spacesuit, oxygen, or any kind of attachment to the space station?

2006-09-21 15:42:20 · 11 answers · asked by SJ 1 in Astronomy & Space

I need help in answering a question for my 7th grader. The quesion is a fill in the blank and states: One important use of semiconductors in electronics is in ___________.

2006-09-21 15:40:57 · 6 answers · asked by joecool148192 1 in Earth Sciences & Geology

Based on the following structural formula, calculate the percentage of carbon present.
(CH2CO)2C6H3(COOH)

a. 67.4%
b. 64.7%
c. 76.7%
d. 66.7%

30.

What mass of silver chloride can be made from the reaction of 4.22 g of silver nitrate with 7.73 g of aluminum chloride? (Be sure to balance the reaction.)
AgNO3 + AlCl3 = Al(NO3)3 + AgCl

a. 12.7 g
b. 10.7 g
c. 24.9 g
d. 3.56 g

2006-09-21 15:40:57 · 6 answers · asked by Anonymous in Chemistry

2006-09-21 15:38:46 · 13 answers · asked by Jacque L 1 in Astronomy & Space

2006-09-21 15:37:25 · 4 answers · asked by RV 1 in Earth Sciences & Geology

2006-09-21 15:37:15 · 1 answers · asked by BWW 3 in Chemistry

Data shows that people over 50 consume 12,000,000 units of soda each month. Bakers has 40% of market share. If they intro a new line & research shows 10% of those over 50 will purchase. 50% of the increase will be at expense of Bakers. Knowing this how many total units of old plus new will Bakers be expected to sell each month if new soda introduced?
Please show me the formula on how u came up with answer &/or send me your email with the answer! Thank you!

2006-09-21 15:36:48 · 2 answers · asked by luckygirl7721 1 in Mathematics

2006-09-21 15:36:24 · 7 answers · asked by Anonymous in Earth Sciences & Geology

the question is


4x = 12

and I got the answer, but i am not sure if i can remember how to write the formula.. I have to write how i got it in class. any help please

2006-09-21 15:34:59 · 5 answers · asked by Anonymous in Mathematics

The citizens of Paris were terrified during World War I when they were suddenly bombarded with shells fired from a long-range gun known as Big Bertha. The barrel of the gun was 36.6 m long and it had a muzzle speed of 1.41 km/s. When the gun's angle of elevation was set to 45°, what would be the range? For the purposes of solving this problem, neglect air resistance.

2006-09-21 15:34:50 · 4 answers · asked by Anonymous in Physics

2006-09-21 15:34:41 · 6 answers · asked by Monique 1 in Mathematics

i would like to Convert the Cartesian coordinates (-6, 13) to polar coordinates.


iwould like to Firstly, give an exact answer such that r greater than or equal to 0, 0 is less than or equal to pi is less than 2pi

then i would like to find an equivalent (exact) answer with r coordinate negative, in the same manner as above

lastly i would like to give an equivalent (exact) answer with r coordinate positive, but different to my first answer

2006-09-21 15:34:28 · 4 answers · asked by zz06 3 in Mathematics

A 3-kg block, starting from rest, slides down a frictionless incline of length 1.2 m. When it arrives at the bottom of the incline, its speed is vf. At what distance from the top of the incline is the speed of the block ?

2006-09-21 15:33:11 · 2 answers · asked by Anonymous in Physics

2006-09-21 15:31:32 · 11 answers · asked by Monique 1 in Mathematics

The first person to answer correctly gets the 10 points! =D

2006-09-21 15:31:10 · 5 answers · asked by SICK MY DUCK! 1 in Mathematics

How many grams of alcohol with a density of 0.900 g/cm3 will have the same volume as 20.0 g of mercury, with a density of 13.6 g/cm3?
a. 15.1
b. 1.32
c. 1.47
d. 22.2


A 15.0 g sample of hydrated copper sulfate was heated to dryness and the new mass measured to be 9.59 g. Calculate the percentage of water in the hydrated crystal. Express your answer to the correct number of significant digits.

a. 36.1%
b. 36%
c. 64%
d. 80%

2006-09-21 15:30:37 · 6 answers · asked by Anonymous in Chemistry

2006-09-21 15:29:42 · 22 answers · asked by rastgoo_2 2 in Astronomy & Space

a) 3 x -5y=20

b) y=-1/2x+3

c) 2y+3x-15=0

Answer it correctly first and get 10 points! :)

2006-09-21 15:28:36 · 2 answers · asked by SICK MY DUCK! 1 in Mathematics

I know that the presence of Ions allow for conductivity of electrons, I am just wondering why?

2006-09-21 15:27:08 · 3 answers · asked by applejacks 3 in Chemistry

a. (5,-1) and (10,5)
b. (4,-7) and (4,2)
c. (-1, -3) and (-9, 4)

2006-09-21 15:25:52 · 3 answers · asked by SICK MY DUCK! 1 in Mathematics

show me how to factor this step by step and show details.
180(n-2)/n

2006-09-21 15:22:59 · 5 answers · asked by coolkenny45 2 in Mathematics

2006-09-21 15:20:48 · 1 answers · asked by rubab a 1 in Astronomy & Space

Solve the initial value problem and determine how the interval in which the solution exists depends on the initial value C.

y' = -4t / y y(0) = C

Ok, i know how to solve this problem. Its just the other parts of the question that i dont get.

1. "determine how the interval on which the solution exists depends on the initial value C"
How do I find the interval??
How does the interval rely on the initial value C??

please help.

2006-09-21 15:19:00 · 1 answers · asked by khaoticwarchild 3 in Physics

I know it has something to do with like positive neutrons or something. I just forgot.

2006-09-21 15:18:41 · 6 answers · asked by opendoor2011 1 in Physics

Lithium has two naturally occuring isotopes, one of mass 6.02 amu and the other of mass 7.02 amu. Find the fractional abundances for these two isotopes. The atomic weight is 6.941 amu.

2006-09-21 15:17:04 · 4 answers · asked by Anonymous in Chemistry

A helicopter is flying horizontally at 7.7 m/s and an altitude of 16 m when a package of emergency medical supplies is ejected horizontally backward with a speed of 13 m/s relative to the helicopter. Ignoring air resistance, what is the horizontal distance between the package and the helicopter when the package hits the ground?

2006-09-21 15:12:21 · 3 answers · asked by websterpirate1 1 in Physics

2006-09-21 15:09:07 · 16 answers · asked by stevenpdk2000 1 in Physics

2006-09-21 15:08:35 · 2 answers · asked by jolsonut 1 in Physics

2006-09-21 15:08:11 · 7 answers · asked by shy 1 in Weather