Science & Mathematics - 15 January 2007

2007-01-15 04:38:21 · 14 answers · asked by BTH L 2 in Physics

What is the maximum value of sin(x) + cos(x)?
I have differentiated and set equal to 0 so I know sin(x)=cos(x)
Not sure how I get from this to the answer though?
Thanks for any help.

2007-01-15 04:38:12 · 6 answers · asked by Philip J 2 in Mathematics

I want to build a small 500w (ish) wind turbine. I have batteries, metal etc not sure what dynamo + regulator I need, would an old car dynamo/regulator work?

2007-01-15 04:36:49 · 2 answers · asked by Paul B 1 in Engineering

I have to do an informational 10-page report on a fraction to pass math second semester. I have everything, but lack interesting mathematical facts about my fraction, one-third.

2007-01-15 04:36:24 · 3 answers · asked by Anonymous in Mathematics

* Or Computer science
*I know Math is needed but what kind of math?

2007-01-15 04:33:56 · 3 answers · asked by Grim Angel 1 in Engineering

can lift a paper clip against the full force of the earths gravity?

2007-01-15 04:32:04 · 4 answers · asked by onelonevoice 5 in Physics

plz first one gets it

2007-01-15 04:31:27 · 6 answers · asked by Anonymous in Mathematics

have a gravity field? The Earth's comes from the rapid spinning of our planet. But the moon is always staionary.

2007-01-15 04:30:31 · 12 answers · asked by onelonevoice 5 in Astronomy & Space

2007-01-15 04:29:31 · 5 answers · asked by paula brax 1 in Astronomy & Space

2007-01-15 04:27:47 · 26 answers · asked by Anonymous in Mathematics

2007-01-15 04:27:43 · 5 answers · asked by orzoff 4 in Weather

capital gain

2007-01-15 04:24:20 · 8 answers · asked by esbell728 1 in Mathematics

2007-01-15 04:23:57 · 1 answers · asked by CHB 2 in Engineering

Can you name a simple (non super scary chemical symbol) liquid that will dissolve in water?

2007-01-15 04:23:20 · 6 answers · asked by Anonymous in Chemistry

For instance why we couldn't be flat and move like serpents or snails;or evn round so that we could tundle like balls......tell..mme

2007-01-15 04:23:10 · 7 answers · asked by shishir g 2 in Biology

In Miles or Kms

2007-01-15 04:22:16 · 2 answers · asked by it's alex! 2 in Geography

2007-01-15 04:22:10 · 2 answers · asked by TearDropp 1 in Weather

Do you know?

2007-01-15 04:21:36 · 4 answers · asked by Anonymous in Biology

2007-01-15 04:21:32 · 3 answers · asked by Anonymous in Biology

2007-01-15 04:20:58 · 4 answers · asked by jephthah 1 in Mathematics

It's just soooo confusing.We don't understand it that we the earth is flat with mountains but from the space we're a sphere.its just like soooo confusing

2007-01-15 04:20:57 · 15 answers · asked by gurly_gurl230 2 in Astronomy & Space

2007-01-15 04:20:36 · 2 answers · asked by Greg B 1 in Physics

homework question =)

2007-01-15 04:20:22 · 2 answers · asked by casaouia 2 in Physics

My little cousin is sooooo scared of aliens, she was up crying all night, she asked me about area 51.
I am getting a little freaked out myself. Is there really aliens??
I thought that they only found a weather balloon...

2007-01-15 04:19:28 · 14 answers · asked by animalcrossingchamp 2 in Astronomy & Space

2007-01-15 04:19:23 · 4 answers · asked by cierra s 1 in Earth Sciences & Geology

I am looking for scientists who doubt if global warming exists.
I have 50 years of data showing that global warming has not started yet.

2007-01-15 04:18:11 · 8 answers · asked by Anonymous in Earth Sciences & Geology

2007-01-15 04:16:48 · 2 answers · asked by toburn41 2 in Earth Sciences & Geology

2007-01-15 04:16:47 · 5 answers · asked by Anonymous in Weather

How would you demonstrated that Elodea (a plant) carries out photosynthesis at a faster rate than it carries out respiration???

I was confused bc i thought that photosynthesis was respiration in plants... and then i thought if you put elodea in btb and put it in light and see how long it would take to turn yellow that would represent photosynthesis??? But what about respiration???

2007-01-15 04:16:28 · 4 answers · asked by *Star* 1 in Other - Science

At what rate must cylindrical spaceship rotate if if the occupants are to experience simulated gravity of .55g? Assume the spaceship's diameter is 30m and give your answer as the time needed for one revolution. please include details. THANK YOU!!!

2007-01-15 04:16:07 · 4 answers · asked by Anonymous in Physics