Science & Mathematics - 14 October 2007

the termite's gut was squeezed till microbes came out. they were put in a .07% saline solution the the microscope slide and then covered with a coverslip.....why is that coverslip sealed with petroleum jelly??? other than to prevent Oxygen from entering anaerobic environment for the microbes?? what's the other reason??? Help!! i need answers by tomorrow morning!!!! thankyou!

2007-10-14 12:32:08 · 4 answers · asked by chica caliente♥ 2 in Botany

2007-10-14 12:31:47 · 9 answers · asked by SEXY_NEVER_LEFT 1 in Mathematics

2007-10-14 12:31:06 · 1 answers · asked by ~USA~ 2 in Chemistry

2007-10-14 12:30:38 · 2 answers · asked by martynas d 1 in Geography

what is the forumla to get volume if you have density and mass?

2007-10-14 12:29:51 · 3 answers · asked by *BOO 4 in Mathematics

NOTE: the number 2 are all exponents!

Write the sentence (-x)2 ≠ -x2 in words.

Why (-x)2 and -x2 are they not equivalent?

Please provide another example so i can understand better.

2007-10-14 12:27:26 · 6 answers · asked by MaRs 1 in Mathematics

The function f(x)=(x-3)^(1/3) has a vertical tangent line...

find the point where the vertical tangent line occurs algebraically

2007-10-14 12:26:15 · 2 answers · asked by Stephanie 1 in Mathematics

27(3^2x) -242(3^x) - 9 = 0

2007-10-14 12:24:57 · 2 answers · asked by Anonymous in Mathematics

a) Explain why the series {1.6 - 0.8(x-1) + 0.4(x-1)^2 - 0.1(x-1)^3 + ...) is NOT the Taylor series of "f" centered at 1.

b) Explain why the series {2.8 + 0.5(x-2) + 1.5(x-2)^2 - 0.1(x-2)^3 + ...) is NOT the Taylor series of "f" centered at 2.

2007-10-14 12:24:29 · 1 answers · asked by Anonymous in Mathematics

Gold has a density of 19.3X10^3 kg/m^3. What would the radius of a solid gold sphere have to be if the acceleration due to gravity at its surface is to be 9.81 m/s^2? Check the answer against the radius of the Earth, which has a mean density of 5.5X10^3 kg/m^3. radius of a gold sphere =? Please help as I have put in my fair share of helping others on here...I am by no means a physics wiz.

2007-10-14 12:24:08 · 1 answers · asked by Anonymous in Physics

consider two cubes an aluminum cube, an iron cube that both have an edge length of 3.0 cm.

1. which cube if either has greater mass.
2.which cube displaces the more water when fully submerged?
3. which cube experiences the buoyant force of greatest magnitude when fully submerged?
4. calculate the magnitude of the buoyant force in newtons acting on the aluminum cube and the iron cube when each submerged in water.
5. if either block is immersed only half-way into the water, how does the magnitude of the buoyant force in this case compare to the buyoant forct when tat same block is fully submerged?

thank you very much for the help.

2007-10-14 12:23:46 · 1 answers · asked by u.p. 1 in Physics

first draw two axis (x,y) then install these points: A (1,0) B (2,2) C (5,6) D (7,5) E (9,0).
Now calculate the area of ABCDE in square units.

2007-10-14 12:18:57 · 2 answers · asked by the flyer 1 in Engineering

2007-10-14 12:18:40 · 4 answers · asked by Anonymous in Geography

A machine in an ice factory is capable of exerting 2.83*10^2 N of force to pull a large block of ice up a slope. The block weighs 1.00*10^4 N. Assuming there is no friction, what is the maximum angle that the slope can make with the horizontal if the machine is to be able to complete the task?

2007-10-14 12:14:59 · 1 answers · asked by Anonymous in Physics

so if all carbohydrates were tested for starch would they all shiow a positive test? why or why not?

2007-10-14 12:13:55 · 2 answers · asked by sweetheart 2 in Botany

where did the 5 and sq rt of .5312 come from? put in calc and see what you get.

7/8 x^2 -3/4x + 5/16 = 0 original question

5 (3 + or - 4i times sq rt of .5312 all over 7) calc answer...

PLEASE HELP ME!!!!

2007-10-14 12:07:57 · 2 answers · asked by elliemae 2 in Mathematics

2007-10-14 12:06:07 · 2 answers · asked by greeneyeglitter 1 in Astronomy & Space

2007-10-14 12:04:28 · 7 answers · asked by Paul 1 in Geography

what produced the iron in the earth's core? and also the heaevier elements like gold and silver in the earth's crust?

2007-10-14 12:03:47 · 1 answers · asked by greeneyeglitter 1 in Earth Sciences & Geology

and my another is what`s diffrance between cadillac eldorado75 and cadillac eldorado fleetwood 75?

2007-10-14 12:01:39 · 1 answers · asked by Anonymous in Biology

2007-10-14 12:00:58 · 4 answers · asked by whizkid2007 1 in Mathematics

i dont get this equation

x^2/a^2 - y^2 /b^2

how do you do that?
i mean, how do u solve that? do u substitute the a, y, x, and b or what?

2007-10-14 12:00:29 · 1 answers · asked by AHauntingNearU 2 in Mathematics

Consider the three sequences below:

Sequence p : 4, 9, 14, 19, 24, ...
Sequence q : 16, 31, 46, 61, 76, ...
Sequence r : 19, 39, 59, 79, 99, ...

(i) Find an expression, in terms of n, for the nth term in the sequence q
ans: 1 + 15n

(ii) If the nth term of the sequence p, q and r are p_n, q_n and r_n respectively, find an equation connecting p_n, q_n and r_n

Please show your workings...I need to understand this..thanks

2007-10-14 11:58:10 · 4 answers · asked by Anonymous in Mathematics

I need help finding a real-life application of a linear function. State the application, give the equation of the linear function, and state what the x and y in the application represent. Choose at least two values of x to input into your function and find the corresponding y for each. State, in words, what each x and y means in terms of your real-life application.

2007-10-14 11:57:39 · 1 answers · asked by jllanos73 2 in Mathematics

A. Vertebral B. Immovable C. Synovial D. Slightly movable..and i know its definitely not A. thnx!! <33

2007-10-14 11:49:43 · 2 answers · asked by Barbie 1 in Medicine

2007-10-14 11:46:09 · 1 answers · asked by Doc 2 in Physics

1. Solve the Quadtratic equation:
3x^2 - 8x + 1 = 0

is it:
[a] -4 +or- 2sqrt(13) /3
[b] -4 +or- sqrt(13) /3
[c] 4 +or- 2sqrt(13) /3
[d] 4 +or- sqrt(13) /3


2. 2x^2 - 1 = 6x

is it:
[a] -3 +or- sqrt(11) /2
[b] 3 +or- sqrt(11) /2
[c] -3 +or- sqrt(37) /2
[d] 3 +or- sqrt(7) /2




please show me how to do it
thanks :]

2007-10-14 11:45:42 · 4 answers · asked by vennysweetgirl21 3 in Mathematics

i have to write a paper on any animal of my choice but i dont to do a common animal like a cat or dog, i want to know any ideas od exotic rare animals.

thank you!

2007-10-14 11:45:04 · 8 answers · asked by Anonymous in Zoology

In the titration of a weak acid HA with 0.100 M NaOH, the stoichiometric point is known to occur at a pH value of approximately 11. Which of the following indicators would be best to use to mark the endpoint of this titration?

A. an indicator with Ka = 10^-6
B. an indicator with Ka = 10^-8
C. an indicator with Ka = 10^-14
D. an indicator with Ka = 10^-12

2007-10-14 11:44:09 · 1 answers · asked by Anonymous in Chemistry

2007-10-14 11:42:20 · 5 answers · asked by Anonymous in Medicine