Science & Mathematics - 24 October 2007

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How strong does a magnet have to be before it had negative effects on a cell phone?

2007-10-24 11:48:24 · 2 answers · asked by qt_pitutie1564 2 in Physics

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why are climate and vegetation related?

pondering the question all day now

2007-10-24 11:46:36 · 2 answers · asked by Anonymous in Earth Sciences & Geology

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Are fainting goats proof of a "mother nature" mistake?

2007-10-24 11:45:32 · 4 answers · asked by Yea Yea 4 in Zoology

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it is possible to remove a negatiley charged particle from an atom using electrical forces?

2007-10-24 11:41:06 · 1 answers · asked by birmingham927 2 in Chemistry

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3 variable word problem. help me solve ^_^?

Last Tuesday, Real Cinemas sold a total of 8,500 movie tickets. Proceeds totaled $64,600. Tickets can be bought in one of 3 ways: a matinée admission costs $5, student admission is $6 all day, and regular admissions are $8.50. How many of each type of ticket was sold if twice as many were sold as matinée tickets?

ok this is what i got so far but I dunno if it is right.

x+y+z=8,500
5x+6y+8.50z=64,000
2x-y=0z

THANKS for the help if you help me out :)

2007-10-24 11:39:39 · 1 answers · asked by Anonymous in Mathematics

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Help..my robot can't move.?

I've built some robot's however, they can't move. I'm excellent at the mechanical and electrical side but I know nothing about programming. Which programming language is good to learn first?

2007-10-24 11:35:06 · 6 answers · asked by Sean D 2 in Engineering

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Find the real solutions of this equation. 3x3 + 4x2 - 7x + 2 = 0?

Find the real solutions of this equation.
3x3 + 4x2 - 7x + 2 = 0
Please Show Work!!!!!!
Thanks!

2007-10-24 11:34:50 · 5 answers · asked by swimchic632 2 in Mathematics

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Calculus problems >______<?

1) A club sells memberships for $420 if 50 people or fewer join. For each person in excess of 50 who joins, the memebership fee of each member is reduced by $2. The club can accept no more than 150 members. How many memberships should be sold to maximize the club's recipts?

2) A rectangular sheet of paper is to be used for a rectangular printed notice. The page must contain 30 square inches of print and there must be margins of 2 inches on each side and 1 inch on the top and bottom. Find the dimensions of the sheet of smallest area which will suffice.

2007-10-24 11:31:58 · 1 answers · asked by wongtongsoup22 2 in Mathematics

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What is a rational or irrational number?

2007-10-24 11:31:57 · 9 answers · asked by Anonymous in Mathematics

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can someone help with a math problem?

how do i simplify 54 inside a radical sign, but not square rooted, like, cube rooted? i dont exactly know how to put it, but there's a little 3 outside of a radical sign containing 54

2007-10-24 11:29:25 · 5 answers · asked by Anonymous in Mathematics

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What is the difference between an expression and an equation?

2007-10-24 11:28:35 · 4 answers · asked by beachsweetie33@sbcglobal.net 3 in Mathematics

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(bib-card) Does any1 kno any references that i can use my project "does caffeine affect the growth of a plant"

I need to know so i can have it on my biology project for tomorrow. Thank You !!!!!

2007-10-24 11:26:03 · 1 answers · asked by Anonymous in Botany

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Why don't protons stick together in a nucleus without neutrons?

Why don't groups of protons form nuclei without neutrons?

Since the strong nuclear force is stronger than the electrical repulsion, shouldn't 2 or 3 or many protons stick together? Why don't we ever find He-two, or Li-three, or U-92 atoms? Why must two protons also have two neutrons to form a stable He nucleus?

2007-10-24 11:24:56 · 10 answers · asked by Jeffrey K 7 in Physics

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Solve the triangle. Round lengths to the nearest tenth and angle measures to the nearest degree.?

B = 43°
C = 107°
B = 14

2007-10-24 11:21:40 · 1 answers · asked by Krystal M 1 in Mathematics

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If r(b)= b^2-7 / b+7, what is r(7)?

Solve and Check.

2007-10-24 11:18:48 · 5 answers · asked by blessed 1 in Mathematics

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What is the bone that articulates dorsally with the acromion process? scapula?

2007-10-24 11:18:13 · 1 answers · asked by Terri L 2 in Biology

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A vector v has initial point P1 and P2. Write v in terms of ai + bj:?

P1 = (-5, 1); P2 = (6, 3)

2007-10-24 11:17:11 · 3 answers · asked by Anonymous in Mathematics

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What is the reciprical of -18?

i was just wondering because i think its 1/18 or -1/18. im just debating between those two.
first answer gets best answer!

2007-10-24 11:15:15 · 6 answers · asked by Shannon 3 in Mathematics

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How do i solve this Algebra 1 homework?

How do i solve....

1. 3x+5y=7

2. 2x=-3y+10

3. 1+7y=5x-2

4. 9-y=1.5x

How do i do these and show all work thanks HELP Due Tommorow need to figure out these things

2007-10-24 11:12:52 · 4 answers · asked by *Kirby* 5 in Mathematics

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Explain the ramifications to the process of transcription if the following occurs: (READ DETAILS)?

a.) the termination sequence of a gene is removed
b.) Poly-A polymerase is inactivated
c.) the enzyme that adds the 5' cap is nonfunctional
d.) spliceosomes excise exons and join the remaining introns together
e.) the RNA polymerase fails to recognize the promoter sequence

2007-10-24 11:11:41 · 2 answers · asked by GEEK 1 in Botany

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How is gold extracted from its original point?

2007-10-24 11:11:21 · 3 answers · asked by McLovin 1 in Earth Sciences & Geology

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can't solve this fraction?

what is - 7/9 less 7/15 ?

2007-10-24 11:11:19 · 3 answers · asked by Anonymous in Mathematics

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when discussing minerals and rocks, what would the defention of chemical composition be?

see question.

2007-10-24 11:10:09 · 1 answers · asked by sokhead93 1 in Earth Sciences & Geology

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Cordinate Plane Activity?

Given the line 2x – 3y = 9 and the point (4, –1), find lines through the point that are

(a) parallel to the given line and
(b) perpendicular to it.

How do I do this? I need details

2007-10-24 11:09:57 · 4 answers · asked by Tanda 2 in Mathematics

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