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Science & Mathematics - 2 October 2006

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Agriculture · Alternative · Astronomy & Space · Biology · Botany · Chemistry · Earth Sciences & Geology · Engineering · Geography · Mathematics · Medicine · Other - Science · Physics · Weather · Zoology

If I have y= -10m,Vy=0,and a = -9.8m/s^2. Need to solve for t or time?

2006-10-02 15:45:29 · 4 answers · asked by Anonymous in Physics

I recently saw what looked like a large black panther in the woods near my home, but to my knowlege there should not be anything like that living in this area of the U.S. Any help would be appreciated.

2006-10-02 15:44:14 · 6 answers · asked by jonhammer69 1 in Zoology

Solve the following system of linear equations by the substitution method. If there is no solution or an infinite number of solutions, so state. Check your answer.
8x + 3y = -16
6x – y = 40

2006-10-02 15:42:52 · 6 answers · asked by Anonymous in Mathematics

2006-10-02 15:42:07 · 7 answers · asked by graycasa 1 in Earth Sciences & Geology

2006-10-02 15:41:20 · 3 answers · asked by BREZZy 1 in Chemistry

A boy standing in a ditch throws a baseball upward toward his father. The ball leaves his hand at ground level, with an initial speed of 14.0 m/s, at an angle of theta = 61.0 degrees from the horizontal. The boy's father reaches up and catches the ball over his head, at a height of 2.0 m above the ground. The father catches the ball on its way down (as shown in the Figure). Calculate how long the ball is in the air. ( g = 9.81 m/s2)

Hint: You do not have to separate the upward and downward parts of this motion. You have enough information to find the horizontal and vertical components of initial velocity. You know the vertical displacment and acceleration. Be careful with signs.

2006-10-02 15:40:10 · 1 answers · asked by Jay 2 in Mathematics

What's the difference? I have a Geography [GIS] test tomorrow and I need to know. Thanks for the help!

2006-10-02 15:38:37 · 7 answers · asked by Mike 1 in Geography

what does the M mean? mass? mole? molecule? o__o

2006-10-02 15:37:44 · 8 answers · asked by Anonymous in Chemistry

exampleas

2006-10-02 15:37:28 · 4 answers · asked by Anonymous in Other - Science

2006-10-02 15:35:17 · 4 answers · asked by sweetistlady4 1 in Weather

A boy standing in a ditch throws a baseball upward toward his father. The ball leaves his hand at ground level, with an initial speed of 14.0 m/s, at an angle of theta = 61.0 degrees from the horizontal. The boy's father reaches up and catches the ball over his head, at a height of 2.0 m above the ground. The father catches the ball on its way down (as shown in the Figure). Calculate how long the ball is in the air. ( g = 9.81 m/s2)Hint: You do not have to separate the upward and downward parts of this motion. You have enough information to find the horizontal and vertical components of initial velocity. You know the vertical displacment and acceleration. Be careful with signs.

2006-10-02 15:34:52 · 3 answers · asked by Jay 2 in Mathematics

I did a lab today in biology where we looked at the cells scraped off the inside of our cheeks, known as Epithelial Cells. I do not understand a question from the lab...

How is the flatness of the cells related to their function?

PLEASE HELP!!!

2006-10-02 15:34:41 · 2 answers · asked by Sponge 2 in Biology

100mL water @ 21 degrees C, add an ice cube, then there is
125mL @ 7 degrees C after ice melts

2006-10-02 15:34:08 · 4 answers · asked by Bubbly Brain 2 in Physics

I'm just curious about a few things:

1) What organs can be donated while the donor is still living?

2) Does the donator have to have the same blood type/physical stature as the person who is recieving the donation?

Thanks!

2006-10-02 15:30:29 · 6 answers · asked by theaterflicka 2 in Medicine

and what property of these metals would allow such a seperation. need help?

2006-10-02 15:29:05 · 8 answers · asked by Anonymous in Other - Science

i want to know the benefits of electricity in our economy,environment,in our health and our well being.

2006-10-02 15:27:43 · 2 answers · asked by kristie 1 in Physics

Absolute value. Show your work. Check your solutions or do your test points.
a) Solve this absolute value equation: 2|x – 3| - 5 = 9. Graph your solution on the number line.
b) Graph the solution to this absolute value inequality: |y – x| ≤ 3.

2006-10-02 15:27:37 · 2 answers · asked by Anonymous in Mathematics

Are they still usable?

2006-10-02 15:26:23 · 6 answers · asked by Anonymous in Astronomy & Space

Basicly it amounts to this:

addition is one number more than another number.

subtraction is one number less than another number.

multiplication is one number of another number.

division is one number in another.

2006-10-02 15:21:49 · 4 answers · asked by lord_andys_new_id 1 in Mathematics

Is it possible to walk, talk, and live a normal life with half a brain? I don't mean a whole brain and only side only works. I mean if you had a whole brain and you took half out, would you still be able to be like everybody else and not have any side effects from having half a brain? I've heard that you'd be sevierly handycapped if you had half a brain damange. And another question is, is it possible to be born with half a brain? If it is possible for either questions to be just like anyone else with half a brain do you have any hard proof saying it's possible? Like any medical books or medical websites or somethin' of that nature? Any help would be great. Oh yeah, the reason why I'm asking is cause my aunt use to be a nurse, and I found out today that she was tellin' someone how I only had half a brain, and it's kinda weird that she'd go and say somethin' like that.

2006-10-02 15:20:50 · 2 answers · asked by ffasheepdog 3 in Other - Science

I DONT UNDERSTAND HOW TRUTH TABLES WORK AND I HAVE A QUIZ TOMORROW SO CAN SOME ONE EXPLAIN TO ME PLEASE THANK YOU

2006-10-02 15:19:39 · 6 answers · asked by hi 3 in Mathematics

At a preschool, there are 2 teachers for the three-year-olds’ classes and 20 three-year olds. There are 3 teachers for the four-year-olds’ classes and 45 four-year olds. (NO checks for this problem.)
a. Find the ratio of teachers in three-year-olds’ classes to three-year-olds as a fraction reduced to lowest terms.
b. Find the ratio of teachers in four-year-olds’ classes to four-year-olds as a fraction reduced to lowest terms.
c. Find the ratio of three-year-olds to four-year-olds as a fraction reduced to lowest terms.

Then rewrite this ratio in two other ways

2006-10-02 15:15:35 · 8 answers · asked by SCHNITZEL 1 in Mathematics

Irene has $4.50 in her coin bank in nickles and dimes. The number of dimes is twice the number of nickles. How many coins of each type does irene have?

2006-10-02 15:12:12 · 4 answers · asked by Mia16 3 in Mathematics

2006-10-02 15:10:13 · 1 answers · asked by nisha10mabry 3 in Mathematics

Plot Summary for Crack in the World (1965)
Dr. Steven Sorenson (Andrews) plans to tap the geothermal energy of the Earth's interior by means of a thermonuclear device detonated deep within the Earth. Despite dire warnings by fellow scientist Ted Rampian (Moore), Dr Sorenson proceeds with the experiment after secretly learning that he is terminally ill. This experiment causes a crack to form and grow within the earth's crust, which threatens to split the earth in two if it is not stopped in time.

2006-10-02 15:09:55 · 12 answers · asked by Anonymous in Astronomy & Space

Three astronauts, propelled by jet backpacks, push and guide a 120 kg asteroid toward a processing dock, exerting the forces with F1=32 N, with an angle of 30 degrees from the x-axis, F2=55 N along the x-axis, and F3=41 N with an angle of -60 degrees from the x-axis. WHat is the asteroid's acceleration, in vector notation and as a magnitude, and a direction relative to the positive direction of the x axis?

2006-10-02 15:05:33 · 1 answers · asked by afchica101 1 in Physics

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