Science & Mathematics - 28 November 2006

A ladder reahces a height of 16 feet on a wall. If the bottom of the ladder is place 4 feet from the wall, what is the slope of ladder as a positive number?

2006-11-28 22:50:18 · 6 answers · asked by Anonymous in Mathematics

2006-11-28 22:42:48 · 5 answers · asked by rajesh k 1 in Engineering

2006-11-28 22:41:59 · 5 answers · asked by Anonymous in Mathematics

2006-11-28 22:38:57 · 9 answers · asked by Anonymous in Earth Sciences & Geology

2006-11-28 22:34:02 · 2 answers · asked by sammylamb 1 in Geography

A) If the valence atomic orbital of an atom are sp hybridized, how many unhybridized p orbitals remain in the valence shell? How many pi bonds can the atom form?

B) How many sigma and pi bonds are generally part of a triple bond?

C) How do multiple bonds introduce ridigity into molecules?

2006-11-28 22:30:40 · 4 answers · asked by pinkpanthergirl 1 in Chemistry

Please use algebra to explain and give me a solution. This is taken from the Idiots Guide to Physics. They say that the answer is x= v0 t +1/2 at squared. why?

2006-11-28 22:30:37 · 6 answers · asked by Microbiologist 2 in Physics

For statements a) through d) use the reaction:


SiCl4(l) + 2Mg(s) --> 2MgCl2(s) + Si(s)



a) Mg is the oxidizing agent

b) SiCl4 is the oxidizing agent

c) Mg is reduced

d) SiCl4 (or Si in SiCl4) is reduced

e) HCl(g) + NH3(g) --> NH4Cl(s) is a redox reaction

f) O3(g)(aq) + NO(g) --> O2(g) + NO2(g) is a redox reaction

2006-11-28 22:29:54 · 2 answers · asked by Whatever 1 in Chemistry

is th pulse rate higher in those whose blood pressure are high ? if so is there any rate ?

2006-11-28 22:29:44 · 8 answers · asked by RK Nair N 1 in Medicine

For the reaction BaCl2 (aq) + ZnSO4 (aq) BaSO4 precipitates out.
Calculate the percent yield (%) if 16.775 g of BaSO4 precipitates
when 2.100 L of 0.0500 M BaCl2 (aq) and 1.920 L of 0.0456 M ZnSO4 (aq) are mixed.

2006-11-28 22:29:18 · 1 answers · asked by Whatever 1 in Chemistry

2006-11-28 22:29:12 · 14 answers · asked by Anonymous in Physics

A student prepares a solution by dissolving 5.98 g of KOH in enough water to make 250. mL of solution.
The student then transfers 27.0 mL of this solution into a 100. mL volumetric flask. Water is then added
up to the 100. mL mark.

2006-11-28 22:28:23 · 1 answers · asked by Whatever 1 in Chemistry

2006-11-28 22:27:23 · 2 answers · asked by allornothindc 1 in Chemistry

2006-11-28 22:24:45 · 3 answers · asked by bob 1 in Mathematics

2006-11-28 22:18:29 · 7 answers · asked by sabu745 1 in Astronomy & Space

The integral of (x + (15/(sin^2(x)))) from pi/6 to pi/2
give the answer in exact form. type pi for pi.
clarify:
∫x+[15/(sin^2(x))] dx [(pi/6), (pi/2)]
Thanks everybody!! :)

2006-11-28 22:17:50 · 1 answers · asked by thesekeys 3 in Mathematics

2006-11-28 22:15:43 · 11 answers · asked by Anonymous in Astronomy & Space

2006-11-28 22:15:13 · 1 answers · asked by Jujeaux 6 in Geography

2006-11-28 22:14:18 · 4 answers · asked by johndeere 1 in Biology

right-angled triangle is required with the hypotenuse of length 18m .if the perimeter of triangle is 40m. determine the lengths of the other two sides.

2006-11-28 22:06:26 · 10 answers · asked by nauris 2 in Mathematics

Aqueous solution of X is an acidic solution. As a chemistry student, describe briefly how you are able to prove that X is an acidic solution. You're not allow to use litmus paper, pH meter or any indicators.

2006-11-28 22:00:20 · 2 answers · asked by colzgirl 2 in Chemistry

2006-11-28 21:59:08 · 2 answers · asked by alain_akira03 1 in Biology

2006-11-28 21:58:35 · 23 answers · asked by Tipsy Dipsy 2 in Other - Science

2006-11-28 21:58:31 · 10 answers · asked by blues2silver 1 in Astronomy & Space

2006-11-28 21:57:16 · 22 answers · asked by frank s 2 in Zoology

Can you help me to find a method for the nth term of the sequence 9000, 8811, 8624, 8439, 8256

2006-11-28 21:46:32 · 6 answers · asked by helen y 1 in Mathematics

2006-11-28 21:44:50 · 2 answers · asked by aviator 1 in Botany

2006-11-28 21:42:14 · 4 answers · asked by CLoud9 3 in Geography

2006-11-28 21:38:47 · 26 answers · asked by Anonymous in Astronomy & Space

2006-11-28 21:37:20 · 7 answers · asked by darkangel_leehom 1 in Zoology