Science & Mathematics - 28 September 2007

2007-09-28 11:51:46 · 6 answers · asked by ♥Blood Rose♥ 3 in Zoology

ok. three men went to a hotel. the room was $30 a night.they stayed 1 night. so its $10 each. after they checked in the secertary noticed it was $25 a night. the bell boy kept $2 and gave $1 to each man.what happened to the other dollar?



not my homework i just wanna knowww.

2007-09-28 11:51:41 · 3 answers · asked by Anonymous in Mathematics

Please help i really need to know what would happen to the coastal cities or areas if there was another ice age?????????????

2007-09-28 11:50:57 · 3 answers · asked by lexxa 2 in Earth Sciences & Geology

This question is prompted by the following event.. When I place the days leave over outside for my nocturnal foxy visitor, I notice several slugs congregating where i put the previous evenings dish. If I then put it in a different place the following night the majority assemble there the night after, and so on.

2007-09-28 11:50:15 · 14 answers · asked by donjamste 1 in Zoology

A. A statement in which both the statement and its converse are both true.
B. A statement that has two converse statements.
C. A statement that has no converse statement.
D. A statement that can be both true and false.

2007-09-28 11:44:06 · 1 answers · asked by Anonymous in Other - Science

m1 is 1 kg and m2 is 3.5 kg. They are suspended from a frictionless pulley 14.9 m above the ground. The two masses are held even at 1.75 m above the ground. When the masses are released, what is the maximum height that the lighter mass will reach? Help on this would be great. I figured out the acceleration by adding the sum of the forces on m1 to the sum of the forces on m2. Now what do I do to figure out the distance traveled by m1? Do I figure out the time it takes m2 to hit the ground and then do something with that time?

2007-09-28 11:43:49 · 2 answers · asked by Jenn 1 in Physics

i am studying for a test, how do you do this problem?

find a general expression for all of its solutions
x-2y+3z=1
x+y-3z=7
3x-4y+5z=7

the answer is (5+z, 2+2z, z) but i need to know how to solve it

2007-09-28 11:42:19 · 2 answers · asked by Anonymous in Mathematics

2007-09-28 11:41:46 · 13 answers · asked by Louise 1 in Mathematics

When I search it all of them have different planets and they seem a bit dated. Can anyone tell me where all the dwarf planets are, i know theres one between mercury and jupiter, and there's pluto are there anymore?

2007-09-28 11:37:49 · 4 answers · asked by Anonymous in Astronomy & Space

~If I get my high school diploma, then I can go to college. ~


A. If I get my high school diploma, then I can go to college.
B. If I can go to college, then I got my high school diploma.
C. If I don't get my high school diploma, then I can't go to college.
D. If I can't go to college, then I didn't get my high school diploma.

2007-09-28 11:36:05 · 6 answers · asked by Anonymous in Mathematics

How is oceanic crust and continental crust different? HOw are they alike?

2007-09-28 11:33:21 · 3 answers · asked by MikiD 2 in Earth Sciences & Geology

A cable is lifting a construction worker and a crate, as the drawing shows. The weights of the worker and crate are 924 and 1510 N, respectively. The acceleration of the cable is 0.620 m/s2, upward.


(a) What is the tension in the cable below the worker?

? N

(b) What is the tension in the cable above the worker?

? N

2007-09-28 11:29:27 · 1 answers · asked by Anonymous in Physics

if it was a waning crescent tonight, how many days would you have to wait until a full moon??

2007-09-28 11:28:51 · 3 answers · asked by toriw94 1 in Astronomy & Space

I live in Chicago so I was just wondering if it's possible to get a tsunami in chicago since we're on lake michigan.

2007-09-28 11:26:34 · 6 answers · asked by Juan-Oscar R 1 in Earth Sciences & Geology

This summer we caught some tadpoles. They were all dinnerent sizes, one of them already had it's back legs. A few weeks after we brought them home, the one with the back legs turned into a frog. We have had the other ones for a few months now, and none of the others have started to change. Someone told me that they only change in a certain season. Is this true??

2007-09-28 11:24:43 · 1 answers · asked by Anonymous in Zoology

2007-09-28 11:20:20 · 8 answers · asked by Anonymous in Astronomy & Space

I don't know how and make me worry to seat there and go strait to the maschine.
please help.

2007-09-28 11:12:52 · 19 answers · asked by jose 61 2 in Astronomy & Space

you have a perfectly spherical planet circled by a perfectly spherical moon in a perfectly circular orbit. Now introduce the sun. Does the moon stay in a perfectly circular orbit or does the sun pull the moon away from the planet when the moon gets closer to the sun?

2007-09-28 11:11:02 · 6 answers · asked by Zack 4 in Astronomy & Space

3. A rock is thrown straight up from the earth's surface. Which one of the following statements concerning the net force acting on the rock at the top of its path is true?

(a) It is equal to the weight of the rock.

(b) Because the rock is stationary, it is
instantaneously equal to zero.

(c) Since the direction of travel of the rock changes, its direction changes from up to down.

(d) Since the rock falls, it is greater than the weight of the rock.

(e) It is less than the weight of the rock, but greater than zero.

2007-09-28 11:00:46 · 3 answers · asked by surfing86 2 in Physics

yeah, i now its a weird question, but im doing a progect about angora goats for school and i cant find all the information i need.
i need to know its origin, advantages of the breed, disadvantages of the breed, physical characteristics, the purpose of the breed and anything else i can find.
so please help me.

2007-09-28 10:59:02 · 2 answers · asked by emmygirl 1 in Zoology

You have identified the following costs:
Heat Press: 612.50
Shirts in Bulk: 2.50
Transfers to press on shirts: 1.00

Write a function C(x), that gives the total cost of producing shirts: ?

Target Shirt sales, x | Price Per shirt P
500 = 13.5$
900 = 11.5$
1300 = 9.5$
1700=7.5$
2100= 5.5$
2500= 3.5$

Based on that info, write a function p(x) that gives the selling price per shirt that would enable you to sell x shirts during the semester. P(x)???

Explain why the total revenue from the sale of x shirts at a price p(x) dollars per shirt is given by R(x)=16x-.005x^2 where R(x) is in dollars

Since Profit = Revenue - Cost, wrie tthe function P(x), that gives the net profit from the sale of x shirts

Write an inequality for the following: How many t-shirts must you sell to make a profit?


Thank you anyone for any help/answers/advice that you may have to offer. I think I may have some of these answers but I doubt that they're right. Any help is appreciated.

2007-09-28 10:57:11 · 1 answers · asked by Meg A 1 in Mathematics

The question is like this:
A student performs a crystallization on an impure sample of biphenyl. The sample weighs 0.5g and contains about 5% impurity. Based on his knowledge of solubility, the student decides to use benzene as the solvent. After crystallization, the crystals are dried and the final weight is found to be 0.02g. Assumes that all steps in the crystallization are performed correctly, there are no spills, and the student lost very little solid on any glassware or in any of the transfers, why is the recovery so low?

2007-09-28 10:54:56 · 1 answers · asked by Anonymous in Chemistry

The escalator moves the man at a constant velocity from the ground level to the floor above, a vertical height of 4.80 m. What is the work done on the man by each of the following forces?
(a) the gravitational force

(b) the escalator







the last person who answered was wrong, please try and show work and answer. It woul dbe a big help

2007-09-28 10:51:33 · 1 answers · asked by Anonymous in Physics

2007-09-28 10:44:52 · 1 answers · asked by someone 2 in Astronomy & Space

2007-09-28 10:43:57 · 3 answers · asked by Ashley C 1 in Mathematics

In Denver, children bring their old jack-o-lanterns to the top of a tower and compete for accuracy in hitting a target on the ground. Suppose that the tower height is h = 10.80 m, and that the bulls-eye's horizontal distance is d = 3.9 m from the launch point. If the pumpkin is thrown horizontally, what is the launch speed needed to hit the bulls-eye? (Neglect air resistance.)



Thank you very much i have been stuck on this problem for awhile now. God Bless.

2007-09-28 10:41:00 · 3 answers · asked by PaNaSoNiCeDgE 1 in Mathematics

2007-09-28 10:40:59 · 4 answers · asked by kylexv6711 2 in Astronomy & Space

Sum up the following meanings ---

1.) Plasma
2.) ionize / ionized / ionization

and tell me how positive, and negetive charges are factors in each.

2007-09-28 10:40:46 · 2 answers · asked by Ben 2 in Chemistry

Determine whether the sequence converges or diverges. If it converges, find the limit. If it diverges, enter NONE

A(n)= arctan(2n)

2007-09-28 10:37:22 · 3 answers · asked by Anonymous in Mathematics

2007-09-28 10:36:20 · 11 answers · asked by . 1 in Mathematics