Science & Mathematics - 1 February 2007

Find the measures of two complementary angles satisfing th egiven conditions

2007-02-01 16:09:38 · 2 answers · asked by amaneetj 2 in Mathematics

frequency= 1.26e19 s-1
wavelength= 6.0e-5 m


Any help is appreciated!

2007-02-01 16:08:59 · 3 answers · asked by Paul Foglino 1 in Chemistry

2007-02-01 16:08:07 · 1 answers · asked by mamma03 1 in Earth Sciences & Geology

2007-02-01 16:06:34 · 2 answers · asked by chocolateT 2 in Biology

theres a bowl at the forest, but it wont fill any water when rianing.

2007-02-01 16:05:53 · 4 answers · asked by chajen v 2 in Physics

ok last time i asked how long should i let plants listen to music some of you smartasses made some comments about plants not haveing ears but there have been scientific studies sence the 1950 showing that plants respond to music i think it has more to do with the vibations the then actual sound any way if any one has some helpful advice about this it would be greatly apreciated

2007-02-01 16:05:21 · 8 answers · asked by sugerplumprincess 1 in Botany

2007-02-01 16:02:34 · 4 answers · asked by JAN 7 in Physics

2007-02-01 16:02:14 · 21 answers · asked by Anonymous in Zoology

The Diphenhydramine Citrate can be found in Excedrin PM and the Diphenhydramine Hydrochloride can be found in Tylonal's Simply Sleep. What is the difference in the two ingredients?

2007-02-01 16:00:48 · 4 answers · asked by melissa13182 3 in Medicine

How do you turn Y-4=1/3(x-7) into slope intercept form. PLEASE show work.

2007-02-01 16:00:48 · 15 answers · asked by Anonymous in Mathematics

Can anyone explain to me how you do the substitution method to solve a system of equations. For example:

-3x+y=-4
2x-y=1

2007-02-01 16:00:29 · 7 answers · asked by Tony H 2 in Mathematics

my brother has sickle cell anemia. he's 26 i'm 23, is it true that i can carry the trait even though i don't have the disease, because we are so closely related?

2007-02-01 16:00:22 · 6 answers · asked by jenna685 1 in Biology

A copper block rests 30 cm from center of a turntable. Coefficient of static friction between surface and block is 0.53. Turntable starts from rest and rotates at a constant angular acceleration of 0.5 rad/s^2. At what time wil block start to slip? (hint: normal force= weight of block)

2007-02-01 15:59:54 · 2 answers · asked by Anonymous in Physics

2007-02-01 15:59:33 · 5 answers · asked by Funk-Ski Biznez Man 4 in Engineering

2007-02-01 15:57:22 · 3 answers · asked by CR7 3 in Chemistry

I want to major in engineering, but I don't know which one would give me the biggest pay. Since there is a lot of them (civil, mechanical, etc) I was wondering which one had the most opportunities and pay.

2007-02-01 15:57:16 · 5 answers · asked by Sushanta S 1 in Engineering

(6-√8)(6-√8)

i think i calculated it wrong because i got 6-2-2-2-2

2007-02-01 15:57:13 · 4 answers · asked by ,,,,,,, 2 in Mathematics

I can't seem to come up with the right combination of equations to solve this problem. I know that V=IR and P=IV, but I'm not having any luck with the substitutions I'm making. Can anyone give me some guidance on how to approach a problem like this and find two different resistance values? Not looking for the answer, as I need to solve it myself, but I am in desperate need of guidance. Any help would be greatly appreciated!

A light bulb is wired in series with a 132 ohm resistor, and they are connected across a 138.0 V source. The power delivered to the light bulb is 22.7 W. What are the two possible resistances of the light bulb?

low value= ?
high value=?

2007-02-01 15:56:28 · 2 answers · asked by larkinfan11 3 in Physics

could tell me how to do
find the x and y interspets for y= -6x-1

i dont get it please help

2007-02-01 15:54:46 · 10 answers · asked by °The Earth Goddess° 4 in Mathematics

2007-02-01 15:53:22 · 7 answers · asked by kath r 1 in Medicine

2007-02-01 15:53:03 · 2 answers · asked by kath r 1 in Medicine

Consider the plane region bounded by y = e^x, x = 4, and y = 1.

Revolve this region about the line y = -1 and find the resulting volume of the solid.

(Please just provide the integral. That's all I'm having trouble with. Thanks.)

2007-02-01 15:51:21 · 3 answers · asked by Taryn 2 in Mathematics

Define a chemicle bond.

Describe the type of bonding that exists between the atoms in hydrogen molecule, H2

Describe the type of bonding that exists between the atoms in the hydrogen Floride molecule, HF

2007-02-01 15:49:25 · 1 answers · asked by Anonymous in Chemistry

Can someone PLEASE explain to me how to do radical divided by radical problems...such as this one: radical 28 divided by radical 7??? Please, I really do not understand it...in class, I thought it was four, but now getting home and reworking it a different way, I keep getting two...

2007-02-01 15:48:22 · 4 answers · asked by RachelDeeJay 2 in Mathematics

ok well actually i have 2 more integrals that i cant figure out. if i could get some help i would appreciate it.

x^3(e^(x^2))/(x^2 +1)^2

and

ln((x^2)+1)

2007-02-01 15:47:55 · 3 answers · asked by stud muffin 2 in Mathematics

2007-02-01 15:45:30 · 6 answers · asked by JAN 7 in Earth Sciences & Geology

like if you were in a cave at the top of a hill.

2007-02-01 15:44:01 · 5 answers · asked by johnec4 3 in Physics

A house with a 16.2 × 103 ft2 floor area and 8.50 ft high ceilings is to be heated with propane. How many kilograms of propane would be needed to raise the temperature of the air inside the house from 63.0 oF to
73.0 oF ?. In this calculation your are ignoring the temperature of the walls etc.



The moloar specific heat of the air inside the house is 30.2 J mol −1 oC −1
The average density of air over this temperature range can be estimated to be 1.22 g/L.
The molar mass of air is 29.1 g/mol.
There are 28.317 liters in a cubic foot.
The molar heat of combustion of propane is −2220.047 kJ/mol


PLEAASE HELPPP I NEED ANSWER + EXPLANATION IF POSSIBLE :) thankyoooou!

2007-02-01 15:42:00 · 3 answers · asked by Jessica R 1 in Chemistry

I have a spider in my room and I dont want it to die.

2007-02-01 15:41:05 · 18 answers · asked by wichit923 1 in Zoology

"Energy cannot be created or destroyed", and magnets continually exert force. Do they lose their power over time?

And a related question, do atoms gradually lose their energy? I mean, the electrons constantly orbit the nucleus, and that takes energy. What happens if they run out of energy?

2007-02-01 15:40:12 · 12 answers · asked by Coffee-Infused Insomniac 1 in Physics