Science & Mathematics - 29 June 2007

I reead somewhere that a person can die if they tie a rope or something around their neck and masturbate with it tied around their neck. Does anybody know what this is? Or what it's called?

2007-06-29 16:39:23 · 8 answers · asked by Rest In Pieces 2 in Biology

2007-06-29 16:38:47 · 16 answers · asked by Anonymous in Earth Sciences & Geology

Have you ever gotten in your car after it's spent a long day in the sun. Obviously, darker colors conduct more heat, but is this a result of the color of the car, or the color of seat's leather?

2007-06-29 16:34:19 · 16 answers · asked by maltese!! 1 in Other - Science

my investigatory project is " using charcoal as ballpen ink" that was my investigatory project so can you help me the steps in making that kind of project..

2007-06-29 16:33:49 · 1 answers · asked by <<NiKkO>> 1 in Chemistry

Can a pole bear survive on South Pole?

2007-06-29 16:32:11 · 2 answers · asked by cheng_siu_hung 1 in Earth Sciences & Geology

An open-top box is to be constructed from a 4 foot by 6 foot rectangular cardboard by cutting out equal squares at each corner and folding up the flaps. Let x denote the length of each side of the square to be cut out.
a) Find the function V that represents the volume of the box in terms of x.
Answer:
Function you are looking for is V = 4(3 - x)(2 - x)x = 4x(x -3)(x – 2)

b) Graph this function and show the graph over the valid range of the variable x..
Show Graph here.





c) Using the graph, what is the value of x that will produce the maximum volume?
Answer.

2007-06-29 16:25:56 · 4 answers · asked by minnesotaskeptic 1 in Mathematics

2007-06-29 16:25:21 · 5 answers · asked by Grace 1 in Mathematics

Please explain the step by step procedure to solve to solve this problem.

2007-06-29 16:22:20 · 6 answers · asked by tammy s 2 in Mathematics

The sensitivity of a symptom is the probability that the symptom is present given that the person has a disease.

The specificity of a symptom is the probability that the symptom is not present given that the person does not have a disease.

Suppose the disease is lung cancer and the symptom is cigarette smoking. If we assume 87% of people with lung cancer and 20.9% of people without lung cancer are smokers. What are the sensitivity and specificity in this case? Can cigarette smoking be used as a diagnostic tool for predicting lung cancer? Why?

2007-06-29 16:21:27 · 2 answers · asked by summer 1 in Mathematics

sin –t = –sin t, and

cos –t = cos t.
sin is an odd function, cosine is an even function
What does this mean? would you explain?

2007-06-29 16:17:52 · 2 answers · asked by liangjizong22 1 in Mathematics

I mean, when I die, who's to say the entire universe (people, planets, stars, galaxies) won't die with me?

2007-06-29 16:17:49 · 16 answers · asked by Anonymous in Astronomy & Space

my problem is that I want to double major in EE and Petroleum or EE and Nuclear engineering.
But I don't know wheter it's feasible or not.

2007-06-29 16:13:57 · 7 answers · asked by Jason N 2 in Engineering

Most calculators have 2 different logs on them: log, which is base 10, and ln, which is base e. In computer science, digital computers are based on the binary numbering system which means that there are only 2 numbers available to the computer, 0 and 1. When a computer scientist needs a logarithm, he needs a log to base 2 which is not on any calculator. To find the log of a number to any base, we can use a conversion formula as shown here:

Using this formula, find . Round your answer to the hundredth's place.

2007-06-29 16:13:12 · 3 answers · asked by minnesotaskeptic 1 in Mathematics

Solve: 4^(x + 2) = 200

2007-06-29 16:11:55 · 4 answers · asked by Anonymous in Mathematics

Solve: log2(x) + log2(x + 2) = 3

2007-06-29 16:10:47 · 2 answers · asked by Anonymous in Mathematics

Solve: log4(x^2) - log4(4x - 4) = 0

2007-06-29 16:09:13 · 5 answers · asked by Anonymous in Mathematics

I'm taking a quiz and the only thing it's giving me is "Given a standard normal distrubution find the percent of data that is to the left of 2.53." I've looked in my book and still can't find anything. Can anyone help?

2007-06-29 15:53:24 · 8 answers · asked by gods_sold_out_servent 2 in Mathematics

determine the work done in winding up the last 30.0m of a 150.0 m long rope that has a weight of 2550N

2007-06-29 15:52:48 · 4 answers · asked by Anonymous in Mathematics

I was wondering what happens if you were to take the seeds from a pickle and plant them.. Would you grow cucumbers, pickles or nothing at all?

2007-06-29 15:52:11 · 4 answers · asked by Anonymous in Biology

It covers a 90 day window and I was in a house where weed was smoked in, but not when I was there. I mean like the house smelled like it had been baked up plenty of times. There was no visible smoke, but I was wondering if I breathed in enough of something to cause me to fail the test. Its a great job opportunity where I will be making about 40k entry level. If you have any answers, I'd appreciate it. Thank you all and God bless.

2007-06-29 15:46:39 · 26 answers · asked by lardbutt20 3 in Other - Alternative

2007-06-29 15:41:32 · 4 answers · asked by humen_fly 2 in Biology

including rivers, lakes, coastline, islands

2007-06-29 15:33:55 · 12 answers · asked by Ryan H 1 in Geography

2007-06-29 15:32:22 · 3 answers · asked by agany t 1 in Zoology

2007-06-29 15:31:49 · 9 answers · asked by Ryan H 1 in Weather

A rectangular painting with a width of x centimeters has an area of x^2 + 50x square centimeters. Find a binomial that represents the length.

2007-06-29 15:21:47 · 4 answers · asked by Anonymous in Mathematics

When it comes to durability, strength, sharpness and design, which sword would a swords master choose, a Damascus steel sword or Japanese samurai katana? Are there any other swords that would outclass the above?

2007-06-29 15:19:41 · 4 answers · asked by Lobo man 2 in Engineering

15x^2y^2 - 9xy^2 + 6x^2 y

2007-06-29 15:18:07 · 3 answers · asked by Anonymous in Mathematics

What happens to the staining? What will be the result? Expected acid fast organisms will not be acid fast? will ethyl alcohol interact with the mycolic acid of acid fast bacilli? Please explain your answer.

2007-06-29 15:17:29 · 3 answers · asked by Tapyboy 2 in Medicine

2007-06-29 15:16:55 · 7 answers · asked by Anonymous in Biology

square root of (21x^3) x square root of (3x)=?

2007-06-29 15:16:50 · 5 answers · asked by Anonymous in Mathematics