Science & Mathematics - 25 January 2007

A small sphere 0.60 times as dense as water is dropped from a height 8.2 m above the surface of a smooth lake. Determine the maximum depth to which the sphere will sink. Disregard any energy transferred to the water during impact and sinking.

2007-01-25 17:12:40 · 3 answers · asked by Fanjame 1 in Physics

Okie, the problem is this:

I have a histogram, positively skewed.

The book says the mean is 27 and the standard deviation is 24.

The book asks to find the number of observation within 0 to 75 and 0 to 47.

The whole range of the histogram is only 0 -200, and cannot go below zero since that would be negative time.


Can anyone help out?

we're supposed to use chebyshev's rule Thanks.

2007-01-25 17:11:50 · 5 answers · asked by statisticsproblem 1 in Mathematics

2007-01-25 17:11:12 · 3 answers · asked by Anonymous in Mathematics

Find the limits of the following

{1 - 1/n}

How do i approach this question?? thanks a lot !!!!!!!!

2007-01-25 17:08:36 · 5 answers · asked by lundul 2 in Mathematics

determine whether the integral converges or diverges

integral of 1/ x*(lnx)^2 in the range of e to infinity



help me please

thanks a lot

2007-01-25 17:08:03 · 4 answers · asked by Anonymous in Mathematics

What is the result of the arithmetic problem in the 1. line?
(187+85) * 3025=?
(131*58)+766968=?
133+94-71=?

2007-01-25 17:05:00 · 5 answers · asked by Javerion N 2 in Mathematics

2007-01-25 17:02:38 · 6 answers · asked by renee 1 in Zoology

is it still K(NO3) or does the soluble change it

2007-01-25 17:02:31 · 4 answers · asked by Anonymous in Chemistry

Also, which structure would apper lighter and darker if a water-solube stain were used?

2007-01-25 16:59:16 · 2 answers · asked by Anonymous in Biology

Not squinchy but just to describe it

Why do they have different eyes than other cro-magnon, homosapiens

2007-01-25 16:58:31 · 12 answers · asked by Ressst 1 in Other - Science

i not understand about curve of performance.... can anyone describe about it?

2007-01-25 16:57:22 · 2 answers · asked by Zacky I 1 in Engineering

2007-01-25 16:55:48 · 15 answers · asked by Arcana I 3 in Astronomy & Space

I just started Statistics and I think that I wasn't paying enough attention. Here are the problems I can't figure out:

Many random number generators allow users to specify the range of the random numbers to be produced. Suppose that you specify that the random number Y can take any value between 0 and 2. Then teh density curve of the outcomes has constant height between 0 and 2, and height 0 elsewhere.

(a) is the random variable Y discrete or continuous? Why?

(b) what is the height of the density curbe between 0 and 2? Draw a graph of the density curve,

(c) use your graphy from (b) and the fact that probability is area under the curve to find P(Y<1).

then the next problem says

find tehse probabilies as areas under the density curve you sketched in problem 48.

(a) P (0.5 (b) P (Y>0.8)

HELP me please, I am really stuck and don't want to bomb my first homework assignment :)

Thanks bunches

Elizabeth

2007-01-25 16:53:36 · 2 answers · asked by lizzey_in_pink 3 in Mathematics

2007-01-25 16:53:24 · 5 answers · asked by Rene 5 in Mathematics

We talk about the law of inertia that the person is pushed back when he is sitting on a vehicle and the vehicle starts, I still cannot understand how the flying bugs or honeybees etc, are able to travel in the same direction and with the same speed of the bus or whichever vehicle it enters

2007-01-25 16:49:29 · 8 answers · asked by madan k 2 in Physics

2007-01-25 16:49:12 · 7 answers · asked by fusco1977 1 in Astronomy & Space

Steam expands in a cylinder with a sliding piston in a steam engine. The resisting pressure, Pext, is
78947 Pascals, the volume changes from 187.5 L to 89.2 L, and 3550 J of energy is lost to the surroundings as heat. Calculate the change in energy of the steam in Joules.

2007-01-25 16:47:28 · 1 answers · asked by Luisa Q 1 in Chemistry

2007-01-25 16:46:21 · 3 answers · asked by laweezer08 1 in Mathematics

I would like to use W4x13, W5x16 or S5x10 to span 238". The I Beams will be supported and pinned on each end and will be on 24" centers. They will be used as a garage overhead storage system and have plywood tying them together and forming a solid floor. If I have a total of 3 at 2', 4' and 6' what is the maximum evenly distibuted load the beams can SAFELY carry?

2007-01-25 16:45:32 · 3 answers · asked by Anonymous in Engineering

whats the worlds biggest spider?

2007-01-25 16:41:01 · 14 answers · asked by yukmouth 6 in Zoology

Surely our astronauts that have orbited the moon have seen it but I've never seen nor heard of their observations.

2007-01-25 16:39:27 · 7 answers · asked by Anonymous in Astronomy & Space

need to write a paper for biology and cant find any worms with an open circulatory system

2007-01-25 16:38:54 · 1 answers · asked by Andrew G 1 in Biology

2007-01-25 16:36:37 · 11 answers · asked by niki 1 in Physics

chemicals or alternatives that have no foul odor, or are harmless to humans/infants.

2007-01-25 16:35:24 · 8 answers · asked by mher 1 in Zoology

Some advertising on the front of trucks and buses is printed with the letters reversed. This makes it difficult for me to read.. Why is this done??

2007-01-25 16:33:54 · 6 answers · asked by heyheyhey 2 in Physics

2007-01-25 16:33:37 · 4 answers · asked by bin25 1 in Engineering

http://www.wavelit.com/index.asp?ch=Wildlife&sh=africam

this is a link to an african watering hole web cam. i have seen monkeys, zebras, warthogs, lions, and gnus. All i have seen tonight are birds (its morning there) but its cool when u see other animals. the sounds are great, too! sounds like the jungle. my cats go wild when they hear it. hope u enjoy it. tell me what u think.

2007-01-25 16:31:47 · 7 answers · asked by Maggie S 2 in Zoology

2007-01-25 16:31:19 · 24 answers · asked by niki 1 in Physics

2007-01-25 16:31:01 · 7 answers · asked by Jackie G 1 in Mathematics

2007-01-25 16:28:42 · 6 answers · asked by Anonymous in Biology