Science & Mathematics - 5 July 2007

I need this for a sci project, and I have looked everywhere on the net, but nothing. Please be serious, and where is the wax secreted from?

2007-07-05 13:28:15 · 6 answers · asked by A Random Stranger You Meet 4 in Zoology

This problem is tricky because of differing bases and a squared variable.

3^x^2 = 6^(x+4)

Can this equation be solved for x without using a calculator, if it is shown in terms of logarithms?

2007-07-05 13:25:05 · 3 answers · asked by Antonio P 1 in Mathematics

1) Which is a better measure of wifi antenna RECEPTION abilities?

2) Is the answer to question one a measure of both power AND reception? Which is it more a measure of.

Please don't tell me about the logarithms, just in understandable language please.

2007-07-05 13:20:28 · 2 answers · asked by Shellshock 2 in Engineering

At one minute to midnight, a mathematician placed ten balls, numbered one through ten, into a vase and removed the ball marked with the number one.
* At one-half of a minute to midnight, the mathematician placed ten more balls, numbered eleven through twenty, into the vase and removed number two.
* At one-third of a minute to midnight, the mathematician placed ten more balls, numbered twenty-one through thirty, into the vase and removed number three.
* At one-fourth of a minute to midnight,...

At midnight, how many balls are in the vase?

My friend tell me that the answer is "zero". Can you explain ...

His argument is
"Name any ball and I will tell you it is not in the vase. Not only that, but I will tell you the exact moment at which it was removed from the vase "

2007-07-05 13:18:36 · 6 answers · asked by Yash 2 in Other - Science

an ant a cheetah a lion or a elephant?

2007-07-05 13:18:22 · 21 answers · asked by Anonymous in Zoology

2007-07-05 13:13:11 · 12 answers · asked by Maji 3 in Biology

An estimate with an explanation would be ok. Try to solve it without looking up anything.

2007-07-05 13:11:20 · 3 answers · asked by Anonymous in Other - Science

1.Each plant of a certain variety yields 50 seeds in the early fall and then dies. Only 40 percent of these seeds produce plants the following summer and the remainder never produce plants. At this rate, a single plant yielding seeds in 1986 will produce how many plants as descendants in 1989?

2.A figure has a 10-inch piece of string attached to the ends of a 6-inch rod. If the string is pulled so as to form the sides of a triangle whose base is the rod, then the greatest possible area of such a triangle is?
I asked it already and one person got 11.31 but I would like to know the steps.

Thank you.

2007-07-05 13:07:12 · 4 answers · asked by RuleOfTheRose 2 in Mathematics

Are all of them fake or are there ones that are actually true?
did Neil Armstrong really land onthe moon?

Is apollo 13 true?

2007-07-05 13:04:38 · 13 answers · asked by Anonymous in Astronomy & Space

Did they pick a certain sea level or some physical feature near the sea line to measure from?

2007-07-05 13:03:04 · 7 answers · asked by shane c 2 in Earth Sciences & Geology

pat drove from home to school in 3 hours. On the way back, because of the traffic, it took him 1 hour longer and the average speed was 2 mph slower. What was his speed of driving to school ?
a. 4 mph
b. 6 mph
c. 8 mph
d. 10 mph

please explain too
thank you !
xD

2007-07-05 13:01:31 · 10 answers · asked by Anonymous in Mathematics

2007-07-05 12:58:56 · 21 answers · asked by atextreme100 1 in Astronomy & Space

i know it is to different seasons but just think about it

2007-07-05 12:57:53 · 3 answers · asked by Anonymous in Weather

2007-07-05 12:55:50 · 1 answers · asked by Anonymous in Earth Sciences & Geology

how big will it be?

2007-07-05 12:31:30 · 14 answers · asked by capa-de-monty 6 in Astronomy & Space

Seven managers and eight sales representatives volunteer to attend a trade show. Their company can afford to send five people. In how many ways can they be selected if there must be at least one manager and one sales representative chosen?

Thanks

2007-07-05 12:22:21 · 4 answers · asked by Icobes 2 in Mathematics

1. verify the following identities:
a. sin 2x=2 tan x/1+tan2 x

b. sin 2 0/ sin 0 - cos 2 0/cos 0= sec 0

c. sin (x+y) cos (x-y) +cos (x+y) sin (x-y)=sin 2x

d. cos 2x= cot2 x-1/cot2 x+1

2. derive the identity for sin 3x in terms of sin x

3. using the double-angle formula, find sin 120*

4. simplify the following expressions so that they involve a function of only one angle:
A. sin 80*- sin 10*/sin 80*+sin 10*

b. sin 130* + sin 20*/cos 130* + cos 20*

give checks for the following two questions.

5. use logarithms and the law of tangents to solve the triangle ABC, given that a=21.46 ft, b=46.28 ft, and C=32* 28' 30"

6. use the method explained in Art. 23 to solve the triangle for which the given parts are a=27, b=21, and c=24.

2007-07-05 12:21:24 · 1 answers · asked by . 2 in Mathematics

I have an excess of citric acid and I want to neutralize some smell from some farm animal litter I'm dealing with.

2007-07-05 12:17:04 · 5 answers · asked by Thomas 2 in Chemistry

it gives a man an eraction what would it do to a woman

2007-07-05 12:13:19 · 10 answers · asked by nascar2play 2 in Medicine

l (-6)-0 l

2007-07-05 12:01:59 · 2 answers · asked by blahhhhhh 2 in Mathematics

i read a newspaper today. its talks about a falling feather hits the ground in the same time as a falling rock in vacuum. i thought about that for quite some times. i don't really get it. a feather falls slower than a rock cuz of air resistance. if a rock falls faster even with air resistance, it should fall even faster without air resistance. so is that mean the speed of gravity constant?

2007-07-05 12:01:55 · 12 answers · asked by ۞_ʞɾ_۝ 6 in Physics

Magnets have a magnetic field. If two large magnets are put in a car, and their magnetic fields repel, couldnt that energy be used some how to propel car? Obviously magnetic fields either attract or pull (push away). I would think that if the magnets were big enough, you could somehow use that energy and propel a car and it would have zero emmisions. Or I guess you could use a small motor to push the magnets back and forth to creat this energy. Does this make sense??

2007-07-05 12:01:32 · 10 answers · asked by Andy Green 2 in Physics

HELP ME!!!!!PLEASE

2007-07-05 11:58:16 · 3 answers · asked by Anonymous in Mathematics

1. simplify the following.
sin (90*+X) sin (180*+X)+cos (90*+X) cos (180*-X)

2. solve the following right triangle by logarithms:
A=28* 30', b=18.3

Solve the following oblique triangles

1. a=31, b=15, c=17
2. a=23.47, B=115* 30' C=20* 29'
3. a=134.2, b=84.54, B=52* 9' 11"
4. a=627.7, b=412.2, A=66* 47'

2007-07-05 11:57:03 · 3 answers · asked by . 2 in Mathematics

2007-07-05 11:51:40 · 5 answers · asked by brinsdon2000 1 in Mathematics

2007-07-05 11:51:26 · 6 answers · asked by blahhhhhh 2 in Mathematics

I'm very interested in having the LAP Band surgery. I have a few concerns. I am curious to know if anyone out there can tell me if there is a drug test to take before hand, and if so, will marijuana in my system be a factor in possible denial for the surgery? I just need to know if I should quit before I go for my blood work.

2007-07-05 11:50:45 · 5 answers · asked by Nicole 3 in Medicine

What affect does it have on you?

2007-07-05 11:49:55 · 7 answers · asked by Anonymous in Medicine

2007-07-05 11:48:21 · 6 answers · asked by Leo 1 in Mathematics

I heard that there are 2 methods.

1. Peripheral blood stem cell collection

(MOST current and common method)…..You are given small injections of Neupogen/Filgrastin for 3 to 5 days to force your marrow to overproduce marrow or stem cells which are then released into your circulating blood. The stem cells are collected by removing blood from a vein in your arm, passing it through a filter system, which collects the stem cells and returns the remaining blood to you…a 2 to 3 hour procedure.

2. Marrow harvest….

You are given light general anesthesia so that you feel nothing during the procedure. Only 2% to 3% of your marrow is withdrawn from the large crest of your hipbone through special sterile needles .. a 60 minute procedure. You may go home the same day.

Which one is less painful. What is the success rate of transplantation?

I want feedback from actual donors also. Thanks.

2007-07-05 11:45:39 · 1 answers · asked by NeedInfo 1 in Medicine