Science & Mathematics - 9 October 2006

Little Jin rolls his toy car horizontally off the top of a staircase with a speed of 3.0m/s. Each of the steps is 0.18 m high and 0.30 m wide. Which step does the car hit when it lands?

2006-10-09 16:16:08 · 3 answers · asked by James B 1 in Physics

I know that the formula of a semicircle is
y= (r^2-x^2)^(1/2). However in the graph that I have the center of the semicircle is at point (4,0) and not at the origen. I just need the equation so I can integrate it.

2006-10-09 16:15:45 · 4 answers · asked by Anonymous in Mathematics

help

2006-10-09 16:15:38 · 14 answers · asked by Quiana 2 in Mathematics

The angles of the others would be nice, if they are even different, but this is the one that most proponents of "cubism" or "cubes can cure you of all your ails, keep your razors sharp and keep your fruit fresh" kind of deal. I know "Mythbusters" debunked this and I seem to remember them saying the angle was like 51 or 52. My husband and I are having a dissagreement. I think it is 53 and he thinks it is 45. I think he is nuts!!

2006-10-09 16:15:28 · 2 answers · asked by spocksarah 1 in Mathematics

A. our earth and the moon revolve around the sun together.
B. the moon does not rotate on its axis.
C. the moon rotates once during each of its orbits of the earth.
D. the earth's gravity holds the moon in place so it can't rotate.

2006-10-09 16:15:28 · 8 answers · asked by Alian 1 in Earth Sciences & Geology

2006-10-09 16:14:56 · 3 answers · asked by elan t 1 in Mathematics

2006-10-09 16:12:50 · 2 answers · asked by LHLKghfbnjuhjtygj92 2 in Mathematics

Which organelles and structures exist in animal cells but not plant cells?

2006-10-09 16:12:37 · 7 answers · asked by Anonymous in Biology

A. Most of the sun's mass is made up of helium.
B. Nuclear fusion in the sun produces helium.
C. Helium in the sun comes from the fusion of hydrogen nuclei.
D. In the sun, neutrons are produced in the process of nuclear fusion.

2006-10-09 16:11:34 · 3 answers · asked by Anonymous in Earth Sciences & Geology

A. gas and dust
B. solar
C. protoplanetary
D. planetesimal

2006-10-09 16:09:42 · 2 answers · asked by Anonymous in Earth Sciences & Geology

A. biggest star in Draco.
B. second biggest star in Draco.
C. brightest star in Draco.
D. second brightest star in Draco.

2006-10-09 16:07:23 · 2 answers · asked by Nancy 1 in Earth Sciences & Geology

prove that a hilbert cube is closed in L2.

need your help.

2006-10-09 16:06:29 · 1 answers · asked by KYP 1 in Mathematics

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2006-10-09 16:05:47 · 10 answers · asked by Dave 2 in Biology

A. speed at which a planet travels at different distances from the sun.
B. average distance between the planet and the sun.
C. distance between the two focuses (foci) of a planet's orbit.
D. time required for a planet to go around the sun.

2006-10-09 16:05:43 · 3 answers · asked by Anonymous in Earth Sciences & Geology

A. More than a trillion stars can be observed by the Hubble Space Telescope.
B. Some stars have absolute magnitude and some have only an apparent magnitude.
C. A light year is the distance light travels in a year.
D. Some planets have a greater apparent magnitude than the brightest stars.

2006-10-09 16:01:51 · 5 answers · asked by heba m 1 in Earth Sciences & Geology

How many quarters equal to 1,000 pennies? Also can u leave how u got the answer???

2006-10-09 16:00:58 · 11 answers · asked by yourbiggestfan:) 4 in Mathematics

2006-10-09 16:00:29 · 6 answers · asked by donovans240z 1 in Astronomy & Space

A social studies quiz consists of five true-false questions.

A. There are more true than false answers.
B. Questions one and five have opposite answers.
C. No three consecutive answers are the same.
D. Josh knows the correct answer to the second question.
E. From these clues, Josh can determine the correct answer to each question.


What are the correct answers to each of the five questions on the quiz??

Note that there is only one possible solution.

Whoever figures this out and gives thorough explanations will be chosen as the best answer.

2006-10-09 16:00:15 · 10 answers · asked by hi :) 2 in Mathematics

A. chromosphere.
B. convective zone.
C. photosphere.
D. radiative zone.

2006-10-09 15:59:03 · 3 answers · asked by Anonymous in Earth Sciences & Geology

I have a bet going with a guy who works on gas wells and he says there is no oxygen in them and the pipes never rust. I said if they use brine like he says there must be some oxygen in there. Does anyone work at the gas wells and knows anything about it?

2006-10-09 15:58:36 · 1 answers · asked by Me 6 in Other - Science

Anthony, Eric, and Karen each bought a car. One bought a Honda, one bought a Ford, and one bought a Volkswagon. Anthony didn't buy a foreign car. Karen didn't buy a Honda. WHo bought which car????

2006-10-09 15:58:26 · 2 answers · asked by Anonymous in Mathematics

what happens if we put an icecube with 0°C in an isolated glass of water which is also at 0°C. What will happen to the water? what will happen to the icecube?

2006-10-09 15:56:56 · 7 answers · asked by Betenix 2 in Physics

help me please

2006-10-09 15:56:54 · 6 answers · asked by Quiana 2 in Mathematics

Assume that the box contains 4 defective widgets and 13 acceptable widgets. There are 4 inspectors, each of whom selects a widget from the box at random, inspects it, and then replaces it in the box. Each inspector makes his or her inspection at a different time.
Additional Details

2 hours ago
What is the probability that at least one inspector will find a defective widget?

2006-10-09 15:56:09 · 3 answers · asked by Diggler AKA The Cab Driver 1 in Mathematics

in the internet

2006-10-09 15:55:42 · 1 answers · asked by HOMER 2 in Biology

HW HELP PLZ!! The graph of the equation of the equation x^2 + 3x - 10 / x - 2 is a line with a hole in it. The hole occurs at the point??

2006-10-09 15:54:56 · 6 answers · asked by sportsrlife 1 in Mathematics

2006-10-09 15:53:56 · 9 answers · asked by C.D. Riley 2 in Biology

2006-10-09 15:53:13 · 5 answers · asked by Anonymous in Zoology

2006-10-09 15:50:37 · 8 answers · asked by manu 1 in Chemistry

2006-10-09 15:46:24 · 6 answers · asked by KEITH G 4 in Weather