Science & Mathematics - 13 December 2007

2007-12-13 01:44:45 · 9 answers · asked by (ƸӜƷ) 1 in Mathematics

There is such things as Prairie dogs, do you thing that they were named after, or not?

A prairie is a large open area of grassland

2007-12-13 01:43:23 · 2 answers · asked by Anonymous in Geography

can someone tell me what 14.5 divided by 4.125

2007-12-13 01:37:51 · 6 answers · asked by Anonymous in Mathematics

2007-12-13 01:35:37 · 11 answers · asked by Autumn 1 in Astronomy & Space

You seemed genuinely scared at what you saw and you don't allow im or e-mail so I thought I would point out the great picture and write-up on the rocket and fuel dump that are on spaceweather.com today. See? You don't need to be afraid and it really was completely explained.

No one needs to "answer" this because it is not a question.

2007-12-13 01:34:46 · 4 answers · asked by B. 7 in Astronomy & Space

Hi guys,

I have access to a 4 exhaust emission analyzer. Assuming that it can measure HC,CO,CO2,O2 in parts per million, how can i calculate the corresponding air to fuel ratio?
Would really appreciate if anyone can recommend me additional website or books to refer to.

Thanks a lot!

2007-12-13 01:31:35 · 2 answers · asked by eddy1234 1 in Engineering

I've recently bought a telescope with a 1200mm focal length and a 254mm aperture. I plan on getting a 35mm eyepiece for deep space and a 6.3 for planetary objects.

I was just wondering how well my images will look, more specifically I want to know how close the image will be when I look through the eyepiece.

2007-12-13 01:25:36 · 3 answers · asked by Jansen J 4 in Astronomy & Space

2007-12-13 01:23:27 · 5 answers · asked by bimmi2111 1 in Physics

A 1.60 102-kg piano is being lifted at a steady speed from ground level straight up to an apartment 18.0 m above the ground. The crane that is doing the lifting produces a steady power of 4.00 102 W. How much time does it take to lift the piano?

2007-12-13 01:20:29 · 5 answers · asked by Anonymous in Physics

A person is making homemade ice cream. She exerts a force of magnitude 20 N on the free end of the crank handle, and this end moves in a circular path of radius 0.32 m. The force is always applied parallel to the motion of the handle. If the handle is turned once every 1.8 s, what is the average power being expended?

2007-12-13 01:18:29 · 1 answers · asked by Anonymous in Physics

In an action-adventure movie, the hero lifts the 91-kg villain straight upward through a distance of 2.0 m in 0.55 s at a constant speed. What power does the hero produce while doing this?

2007-12-13 01:17:30 · 3 answers · asked by Anonymous in Physics

In an experiment we did in a lab class, we put the enzyme Beta Galactosidase (b-gal) in a test tube with ONPG, a lactose-mimicking chemical. We put the tube in a Spec 20 to measure the absorbance. As the ONPG was broken down by b-gal, the solution in the tube turned yellow.
We tested this at several different temperatures and measured the absorbance at 15 seconds. At low temperatures, the absorbance was very low. Warmer temperatures showed a higher absorbance. However, temperatures that were "too high" showed a lower absorbance.
My question is, what does absorbance even mean? Why do we see this trend in the enzyme data?

2007-12-13 01:16:13 · 2 answers · asked by Anonymous in Biology

It would be all over the place wouldnt it?
Please answer thank you xxx

2007-12-13 01:11:48 · 24 answers · asked by hunnii b 2 in Astronomy & Space

2007-12-13 01:07:32 · 1 answers · asked by chatter p 1 in Physics

2007-12-13 01:00:10 · 6 answers · asked by star_prince0 2 in Earth Sciences & Geology

2007-12-13 00:59:36 · 1 answers · asked by chatter p 1 in Physics

2007-12-13 00:54:33 · 7 answers · asked by sunil kumar b 1 in Astronomy & Space

What are the safety precautions during an earthquake?
What will I do to be safe during an earthquake. Example, dojn't panic ,etc...
Why am I doing this? To be ready for an earthquake.

Thank you.

2007-12-13 00:44:55 · 5 answers · asked by Anonymous in Earth Sciences & Geology

2007-12-13 00:44:48 · 11 answers · asked by Anonymous in Physics

i need a elaborate reason. thnx!!!

2007-12-13 00:43:05 · 6 answers · asked by Anonymous in Geography

I am doing a three year diploma course in adult nursing and thinking of becoming a doctor how long will it take?

2007-12-13 00:35:59 · 6 answers · asked by Anonymous in Medicine

what does the image scale of a telescope and what does it tell us?

2007-12-13 00:18:33 · 6 answers · asked by fpa06mr 5 in Astronomy & Space

2007-12-13 00:16:15 · 17 answers · asked by Anonymous in Mathematics

2007-12-13 00:13:31 · 4 answers · asked by Anonymous in Other - Alternative

2007-12-13 00:00:44 · 14 answers · asked by Anonymous in Astronomy & Space

2007-12-13 00:00:37 · 2 answers · asked by Anonymous in Astronomy & Space