Science & Mathematics - 30 October 2006

A 3 kg ball is dropped from the roof of a building 176.4 m high. While the ball is falling to earth, a horizontal wind exerts a constant force of 12 N on the ball. How long does it take to hit the floor? And how far from the building does the ball hit the ground?
Answer: 6 seconds, and 72 meters

2006-10-30 12:26:54 · 6 answers · asked by VBallGal 1 in Physics

2006-10-30 12:25:03 · 1 answers · asked by anonymous91 1 in Chemistry

disscuss

2006-10-30 12:24:54 · 7 answers · asked by Anonymous in Mathematics

Ok I know how to find reference angles... the angle from the x-axis and all but i don't understand this problem... it's online and i can check my answers right away ok so here it is

For each angle below, determine the quadrant in which the terminal side of the angle is found and find the corresponding reference angle.
theta=4
reference angle = ??? quadrant = 3

so that means 4 radians i get that. so thatwould be 360 degrees right? right. I have to tell what quadrant it's in and the only answer it took was quadrant 3... how is it in quadrant 3? And I don't know what the reference angle would be in radians.

Can anyone help me please =)

2006-10-30 12:24:28 · 3 answers · asked by gankthese 1 in Mathematics

How does salt help living things to survive?

2006-10-30 12:23:45 · 3 answers · asked by lilcorey862 1 in Biology

2006-10-30 12:22:38 · 2 answers · asked by HaitianPrincess/mrsvickervan 2 in Biology

A diamond cutter has a raw diamond that weighs 19.5 carats and from which two 5-carat diamonds will be cut How much will the raw diamond weigh in milligrams?How much will each of the two cut diamonds weigh in milligrams?

Plz hurry!

2006-10-30 12:22:33 · 10 answers · asked by Emma B 2 in Mathematics

were we suppose to set are clocks back

2006-10-30 12:21:56 · 9 answers · asked by redster 2 in Astronomy & Space

2006-10-30 12:20:46 · 5 answers · asked by Carly S 1 in Biology

7 1/2+7 1/2+ 8 3/4+8 3/4=32 1/2?
It is supposed to be written as:
7 1/2 by 8 3/4.

Thanks a ton!

2006-10-30 12:19:07 · 5 answers · asked by Addicted To Abercrombie & Fitch 2 in Mathematics

2006-10-30 12:18:29 · 1 answers · asked by Anonymous in Engineering

its a math riddle but im confused

2006-10-30 12:18:25 · 8 answers · asked by chris 1 in Mathematics

I can't remember the name of that insomnia show (UK) where they had to stay awake for as long as possible, kind of like big brother, but I wanted to know just how long they slept for afterwards...

2006-10-30 12:17:16 · 6 answers · asked by Das Contras 1 in Other - Science

Generally ice got weight. As a rule it can not be stored in air. Then how can it be there in clouds. During rain, sometimes, there is hailstorm. How is it possible. It may look silly, but when I have observed raining yesterday I had this doubt. Nothing can be stored in the air due to gravitational pull of the earth. Clouds are less weighed and hence they stay in air. But hail storsms? .......

2006-10-30 12:16:16 · 7 answers · asked by Anonymous in Weather

2006-10-30 12:16:11 · 5 answers · asked by moksha 2 in Mathematics

homework question

2006-10-30 12:14:30 · 4 answers · asked by mita mita 1 in Biology

Kay, im doing
realllly bad in Geometry.
and the only reason is i keep screwing up
on the two-column proofs.
Does anyone have any tips??
or anything to help understand it?
PLEASE
im desperate for answers
(and a better grade)

2006-10-30 12:14:05 · 6 answers · asked by Roxy 1 in Mathematics

Does the liver cell contain the same chromosome as a cheek cell ?

2006-10-30 12:12:26 · 5 answers · asked by menu 1 in Biology

Aret they from outer space, or from a hole in the earth or another dimension?

2006-10-30 12:11:08 · 27 answers · asked by kiku 4 in Astronomy & Space

what is the difference betwen chromosomees,genes and DNA. can u explain in simple words?

2006-10-30 12:10:33 · 5 answers · asked by menu 1 in Biology

The number I got was 105.34 and the actually number is 105.

2006-10-30 12:09:49 · 2 answers · asked by Annie1313 1 in Mathematics

Is there a mathematical way to prove that 2+2=4? Not just off of common knowledge but is there actually a way to prove it?

2006-10-30 12:08:38 · 12 answers · asked by Anonymous in Mathematics

1. The oxidation of lactate to pyucate occurs in ___ cells
liver OR muscle( i think muscle, not sure)
2._____ repiration is more efficient? i think Aerobic
aerobic OR anaerobic
3. The ____ pathway is more efficient pathway? I think anaerobic
aerobic OR anaerobic
4. In the catabolic breakdown of complex compounds, energy is released in ___ amounts?
Large OR Small
5. In an Oxidation reaction a substance ____ electrons?
Gains or loses ( i think loses)
6. The oxidized molecule_____ energy?
Gives up OR Recieves
7. In oxidation an____ is removed?
electron OR entire hydrogen atom
8. NAD is an ion with a net ___ charge?
Positive OR Negative
9. In cellular respiration glucose is?
Oxidized OR reduced
10.During cellular respiration the potiential energy of electrons is?
Increased OR decreased
11. An organism can use up energy, produce energy, recycle energy, or does not lead to and energy source.. i think that it recycles it?? but i have no clue! Please Help!Very very thank

2006-10-30 12:04:33 · 4 answers · asked by Anonymous in Biology

19 31 515 142

617 501 11111

821812 91

2006-10-30 12:01:09 · 1 answers · asked by Amy B 1 in Mathematics

a. 30 x 30 = 900
b. 30 + 30 = 900
c. 2 to the 30th power = 1,073,741,824
d. 2 to the 2nd power = 4

2006-10-30 12:00:17 · 1 answers · asked by Jenny M 1 in Biology

2006-10-30 11:54:34 · 7 answers · asked by Anonymous in Chemistry

if you kicked a ball filled with will it go farther than one with air

2006-10-30 11:53:19 · 5 answers · asked by erik m 1 in Physics

1. Macro and Micro evolution is the same only a different amount of time, if you claim one exists, you say the other exists as well.
2. FYI Man from Ape is Micro evolution (we are the same species = primates)
3. No links between man and ape? DNA proves it, Neandertal man, Lucy, Homo floresiensis, the 'Hobbit', Kenyan skull OL 45500,Homo sapiens idaltu ,OH 65, a new fossil from Olduvai Gorge ,Transitional skull D2700 from Dmanisi ,Sahelanthropus tchadensis, and more
......So how is it coming along trying to find proof for that invisible God in the sky?...lol

2006-10-30 11:52:46 · 9 answers · asked by Anonymous in Biology

A plane has set a bearing of S60ºE at 600mph, but there is a wind blowing in the direction of N45ºE at 80mph. What is the resultant speed and direction of the plane?....can anyone tell me how you would solve this?

2006-10-30 11:52:21 · 2 answers · asked by Anonymous in Mathematics

...and she wants to know if its high. but i dont know so...

2006-10-30 11:50:54 · 23 answers · asked by szx 2 in Other - Science