Science & Mathematics - 20 June 2006

1) A person standing in the park notices that after a wave crest passed by ten more crests pass in a time of 120 sec. What is the frequency of the wave?

2) A light waves travel through air at a speed of 3 x 10(to the 3rd power) m/s. Red light has a wavelength of about 6.6 x 10(to the negative seventh power) meter. What is the frequency of the red light?

2006-06-20 01:05:16 · 6 answers · asked by Anonymous in Physics

(Make sure to cite your sources in a manner that they can be looked up and verified. You may include links. Answers without citation will not be considered for best answer.)

2006-06-20 01:03:12 · 12 answers · asked by ableego 7 in Biology

2006-06-20 01:02:29 · 5 answers · asked by Anonymous in Engineering

this question is related to planning and project controls.

2006-06-20 01:02:00 · 6 answers · asked by haftepeek 1 in Engineering

From police bomb squad robots to the mars landers, they are all in some ways controled by humans, will a robot ever move and interact without a human hand to guide it>

2006-06-20 00:59:15 · 6 answers · asked by wolfmano 7 in Engineering

does freshly made juice get spoiled coz of fermentation or smething?

2006-06-20 00:52:58 · 10 answers · asked by cool victor 1 in Biology

2006-06-20 00:50:43 · 8 answers · asked by chiku 1 in Physics

2006-06-20 00:50:34 · 5 answers · asked by Anonymous in Geography

I heard that when a candle burns not only does it realease light it also absorbs dark. That is why it turns black could you please explain?

2006-06-20 00:49:47 · 11 answers · asked by Calchas 3 in Physics

2006-06-20 00:49:24 · 6 answers · asked by naxatra2001 1 in Mathematics

How does it stay there? I'm serious, I really want to know. :P

2006-06-20 00:44:26 · 29 answers · asked by Anonymous in Earth Sciences & Geology

brown and black

2006-06-20 00:43:59 · 6 answers · asked by porge ann 1 in Biology

2006-06-20 00:37:38 · 2 answers · asked by piapsi 1 in Physics

2006-06-20 00:36:57 · 5 answers · asked by just wondering 2 in Medicine

I believe the world would start spinning off axis but not sure of the time frame and what exactly would happen / series of events...

2006-06-20 00:36:44 · 13 answers · asked by Pitborn 1 in Astronomy & Space

chemistry ,solid states

2006-06-20 00:34:56 · 1 answers · asked by dr_lejoissacjohn 1 in Chemistry

2006-06-20 00:34:52 · 22 answers · asked by ski 1 in Botany

2006-06-20 00:29:57 · 4 answers · asked by jaq 2 in Chemistry

2006-06-20 00:28:11 · 5 answers · asked by neetie a 1 in Other - Science

2006-06-20 00:25:40 · 14 answers · asked by ? 1 in Other - Science

2006-06-20 00:25:31 · 12 answers · asked by cool victor 1 in Biology

the name of the toy chemist, the company he belong to, his position in the company and the url or resource where you git the info.

2006-06-20 00:23:10 · 1 answers · asked by rosa 1 in Chemistry

2006-06-20 00:13:56 · 33 answers · asked by Anonymous in Mathematics

Such as: why do men have nipples? If humans evolved from monkeys why are there still monkeys? I mean, if you are curious about something, you sholud look for the answers. These things appear every day and it seems to me that people asking this is too lazy to search for questions they are interested (not to mention the ones that post questions about their homework or copy-paste from wikipedia).

2006-06-20 00:08:11 · 9 answers · asked by Oona 3 in Other - Science

2006-06-20 00:08:09 · 9 answers · asked by godfrey w 1 in Earth Sciences & Geology

2006-06-20 00:02:55 · 13 answers · asked by alaa 1 in Physics

How do witches die?
Witches are evil like devil.
Die is when we are old and we are dead.
How do means it's like ur asking.
Pls tell me.

2006-06-20 00:01:22 · 7 answers · asked by Anonymous in Other - Science