Science & Mathematics - 5 December 2007

Please show all formulas and steps.

A cylindrical diving bell 3.0 m in diameter and 4.1 m tall with an open bottom is submerged to a depth of 225 m in the ocean. The surface temperature of the water is 25°C, and the temperature 225 m down is 5.0°C. The density of sea water is 1025 kg/m3. How high does the sea water rise in the bell when the bell is submerged?


First to have correct answers receives ten points.

Thank you very much.

2007-12-05 16:37:12 · 1 answers · asked by none 2 in Physics

2007-12-05 16:35:18 · 3 answers · asked by bizzy11lizzy 2 in Mathematics

An inventor proposes to make a pendulum clock using a pendulum bob with mass m at the end of a thin wire of length L. Instead of swinging back and forth, the bob moves in a horizontal circle with constant speed v, with the wire making a constant angle beta with the vertical. Assuming that the time T for one revolution is known, find thetension F in the wire and angle beta. (derive the equation)

i honestly do not understand what this is asking me to do. And i do not understand how to solve without being given any values, any help is much appreciated.

2007-12-05 16:30:31 · 3 answers · asked by Anonymous in Physics

i am trying to figure out how to figure $245.99 with 40% off....how would i do that on a calculater? And how would i figure it out with different numbers?

2007-12-05 16:30:26 · 21 answers · asked by Anonymous in Mathematics

if .2125 grams of a gas is in a container of 1.25 lter volume at a pressure of .838 atm. and 40c, what is the molecular weight of the gas.


i gonverted 40c to K =313K
but i've filled in all of my variables. . . what am i doing wrong
please help!

2007-12-05 16:27:57 · 5 answers · asked by Anonymous in Chemistry

I'm a 4th year MS(Software Engineering) student of VIT University, Vellore, India. its a 5 year program.

2007-12-05 16:27:33 · 2 answers · asked by Juani 1 in Engineering

did sat. they sold 82 boxes of cookies fri. how many boxes of cookies did they sell sunday?
show me how you get the answer and why u took this steps to solve

2007-12-05 16:26:23 · 3 answers · asked by stephanie k 1 in Mathematics

"God does not play dice with the universe"?

2007-12-05 16:25:05 · 7 answers · asked by nuff said 6 in Paranormal Phenomena

Having lost all of our money and Mr. B losing his job, we wallow in our disappointment as we head over to the lounge to listen to some Elvis impersonator - hey, at least it's free. There on the table is a handout with the different parlay cards on it. We take the $5 bill off the table that the last people left for the cocktail waitress and place a bet. What is the best bet to make on the handout - assuming we are going to make a bet? If you get it right we will win big money, save the day and have enough to give Mr. B enough money to buy the school board and get his job back. Show all work (except unnecessary work) and give explanation- assuming a smart person is looking at the parlay cards.

Thank you so much for your help!!!!!

2007-12-05 16:22:33 · 2 answers · asked by Jared D 1 in Mathematics

Betty's diner makes 15% profit on its lunches and 22% profit on its dinners. If the diner took $2700 on Tuesday and made $524 profit, how much was spent at lunch? Let x represent the sales at lunch and y represent the sales at dinner, write two equations, then solve.

♥Thanks♥

2007-12-05 16:20:42 · 1 answers · asked by liz! 3 in Mathematics

10x^2-3xy^-y^2

2007-12-05 16:19:31 · 2 answers · asked by Ebony N 1 in Mathematics

Well I'm doing a science project so I wanna know

2007-12-05 16:18:39 · 11 answers · asked by Christina B 2 in Chemistry

I cannot seem to get a straight answer on this... My initial assumption is no, but that is based on the assumption that the speed of sound is constant, and only changing the medium's density or temperature could change it.

2007-12-05 16:17:31 · 4 answers · asked by kbomb2121 2 in Physics

i live in auckland NZ so if someone could use the example 12 pm tuesday auckland or 12am tuesday london. all help greatly apreciated. im just intreasted after seeing things like this 8/7 pm est/cen

2007-12-05 16:16:24 · 5 answers · asked by ? 4 in Geography

What does the Cosmic Microwave Background tell us about some of the currently fashionable cosmological theories?

2007-12-05 16:14:13 · 3 answers · asked by Anonymous in Astronomy & Space

2007-12-05 16:10:46 · 2 answers · asked by Anonymous in Physics

y = sin(pix/2) and y=x?

so i know one of the steps is to solve x

sin(pix/2) = x
im not sure how you would solve for that.


i know after you find the intersection points you would find a number in between [a,b] that would tel you which of teh two y's are bigger.

then you fine the area by taking the integral of the bigger-smaller and then taking the derivative of that and solving F(b)-F(a) but i cant do anything without knowing the values of x and i just dont know how to solve with sin in the problem

2007-12-05 16:10:33 · 5 answers · asked by Anonymous in Mathematics

also does any body know the life span of monarch caterpillars? how many days in general before the coccoon???

2007-12-05 16:10:27 · 2 answers · asked by Anonymous in Zoology

Find the antiderivative

⌠ 8x / √(x^2+2)
⌡

2007-12-05 16:09:42 · 3 answers · asked by Rachel 1 in Mathematics

this is part of my homework. I need to ask people why they like science. This is the best place i could think of.

2007-12-05 16:02:17 · 10 answers · asked by Mely C 1 in Biology

2007-12-05 16:01:34 · 10 answers · asked by alwalclif 2 in Paranormal Phenomena

When 30 orange are planted per acre each tree yields 150 oranges For each addtional tree per acre, the yield decreases by 3 oranges per tree. Express the total yield of oranges per acre, Y, as a function of the number of trees planted per acre, x, if x>/= 30.

Please help me explain the answer is Y=240x -3x^2. How do you get that?

2007-12-05 15:59:54 · 1 answers · asked by Andrewjoe 1 in Mathematics

2007-12-05 15:59:24 · 3 answers · asked by FOXgirl7 1 in Biology

A tennis ball, starting from rest, rolls down the hill in the drawing. At the end of the hill the ball becomes airborne, leaving at an angle of 35° with respect to the ground. Treat the ball as a thin-walled spherical shell, and determine the range x.

I dont have a picture of the drawing but the ball rolls down a hill, goes back up slightly then launches at a angle of 35 degrees. the point at which the ball is launches is at the same height as where the ball lands. Also the vertical height from where the ball starts rolling down the hill to the height it is launched from is 1.8m.
I know the Inertia of a hollow shell sphere is I=(2/3)mr^2

2007-12-05 15:58:58 · 2 answers · asked by Anonymous in Physics

given: ABCD is a parallelogram, line ABE, angle CBE is congruent to angle CEB.
prove: a. angle DAE is congruent to angle CEA
b. AECD is an isosceles trapezoid
i have a lot of problems with proofs; i really dont understand. any help would be greatly appreciated, thank you!

2007-12-05 15:56:38 · 4 answers · asked by redx 2 in Mathematics

what is 80% less than 800?

thank you!!

2007-12-05 15:55:37 · 3 answers · asked by Anonymous in Mathematics

2007-12-05 15:54:21 · 1 answers · asked by xtmilx 2 in Mathematics

With all of the exploring that human beings are doing, I would wonder what would happen if we found such a scenario. There are surely many planets that are "suitable." It's just a matter of finding one that offers the "exchange" that humans can tolerate.

2007-12-05 15:51:23 · 10 answers · asked by In God We Trust 7 in Earth Sciences & Geology

With all of the exploring that human beings are doing, I would wonder what would happen if we found such a scenario. There are surely many planets that are "suitable." It's just a matter of finding one that offers the "exchange" that humans can tolerate.

2007-12-05 15:50:47 · 8 answers · asked by In God We Trust 7 in Astronomy & Space

the perimeter of a triangle is 82cm. the longest side is 13cm more than the shortest side. the medium side is 6 cm more than the shortest side. find the lengths of the sides.

and

the length of a rectangle is 11 inches longer than its width. the perimeter is 98 inches. find the length and width.

thankyou

lurv s

2007-12-05 15:50:44 · 4 answers · asked by ? 4 in Mathematics