Science & Mathematics - 16 August 2007

It is to head to the direction of the Star Kakistoca

2007-08-16 05:24:15 · 5 answers · asked by Anonymous in Astronomy & Space

> 1 trillion ohms per millimeter?

2007-08-16 05:21:28 · 4 answers · asked by Anonymous in Physics

I think worm holes are a pretty interesting concept. Do you think humans will ever be able to create/control on and use it for time/instantaneous travel?

2007-08-16 05:18:50 · 1 answers · asked by Anonymous in Astronomy & Space

How do we know what a supernova is? How do we know black holes exist? How do we know what a neutron star is made of or if they exist? How do we know what the sun is made of even though we cant get to it. Basically how can we know anything about anything outside of earth thats so many lightyears away if we cant see it at all but know so much....?

2007-08-16 05:15:43 · 6 answers · asked by Raven Rage 2 in Astronomy & Space

2007-08-16 05:14:44 · 7 answers · asked by Anonymous in Mathematics

2007-08-16 05:11:39 · 2 answers · asked by Anniversary Guy 1 in Physics

2007-08-16 05:09:55 · 6 answers · asked by Salmon 3 in Earth Sciences & Geology

Please tell me about it and how I use it in my life.

2007-08-16 04:59:25 · 7 answers · asked by TrueWOW 3 in Physics

phase in eddy current,and pips in ultrasonic

2007-08-16 04:57:06 · 1 answers · asked by dahsyat 1 in Engineering

I am a woodcarver doing a spotted sandpiper, some of my reference photos seem to indicate some webbing while others do not. Is it something they can retract at will? Anyone got photos of sandpipers stretching for flight?
Thanks for any help you can provide
Ted

2007-08-16 04:52:01 · 3 answers · asked by Ted A 1 in Zoology

2007-08-16 04:51:06 · 3 answers · asked by Anusha S 1 in Physics

Where can I use the IC CD4022 and for what? This IC have 8 outputs but I don't know how this IC work?
And what for CD 40193 which which is 4-bit binary up/down counter, and CD4020 which is 14-bit binary counter.
I don't know how work this counters, and which pins are +Vcc, GND, outputs....
Thanks!!!!!!!!!!

2007-08-16 04:42:21 · 1 answers · asked by Anonymous in Engineering

this symbol ( ^ ) means to the power of .
Thanks a lot in advance

2007-08-16 04:38:51 · 8 answers · asked by Mystic healer 4 in Mathematics

Can anyone explain me how work the IC SN 7490?
Thanks!!!

2007-08-16 04:37:44 · 3 answers · asked by Anonymous in Engineering

Can anyone help me to make a electronic dice?
When you press the taster the display or LEDs to show any number from 1 to 6?
Can anyone?
Thanks!!!!

2007-08-16 04:32:51 · 2 answers · asked by Anonymous in Engineering

I don't know how to define the values of the resistors and capacitors on the astable multivibrator with NE555.
Tp1 to be 60 seconds and Tp2 to be 180 seconds.
Can anyone help me to define the values of the resistors and capacitors?
Thanks

2007-08-16 04:30:41 · 2 answers · asked by Anonymous in Engineering

Why are phytoplankton, and not benthic algae or rooted aquatic plants, the dominant photosynthetic organisms of the oceanic pelagic biome?


HELP please >.<

2007-08-16 04:30:25 · 4 answers · asked by Anonymous in Biology

Any help is appreciated, and needed.

1. What volume of 0.800M KOH is needed to neutralize 15.0mL of 0.65M H2SO4?

2. What is the molarity of sodium hydroxide if 38mL of the solution is titrated to the end point with 14mL of 0.75M sulfuric acid?

3. It requires 24.6 mL of Ca(OH)2 solution to neutralize 14.2 mL of 0.0140M HCH3COO. What is the concentration of the calcium hydroxide solution?

4. By titration, it is found that 12.4 mL of H2SO4 is required to neutralize 19.8 mL of 0.100M Ca(OH)2. What is the molarity of the H2SO4?

5. What is the volume of 0.120M Ba(OH)2 is required to neutralize 12.2 mL of 0.25M HCl?

Like I said, any help is appreciated, and needed. I have no hope of passing this class unless I get an understanding of this subject.

2007-08-16 04:23:10 · 3 answers · asked by Anonymous in Chemistry

2007-08-16 04:21:01 · 4 answers · asked by jasnyne k 1 in Physics

Prove the following:
1/If 2 sides of a triangle are unequal in length,then the greater side has the greater angle opposite it
2/Any 2 sides of a triangle are together greater in length than the third side.

2007-08-16 04:05:21 · 4 answers · asked by beuuu 2 in Mathematics

can i use a 1200w inverter on a batery charged by a 80w solar panel

2007-08-16 04:04:09 · 6 answers · asked by Anonymous in Engineering

do you think they will get to the north sea near Newcastle!

2007-08-16 03:57:22 · 8 answers · asked by Ste 1 in Zoology

Indiana Jones is trapped in a maze. To find his way out, he walks 10.0m, makes a 90.0 degrees right turn, walks 5.00m, makes another 90.0 degree right turn, and walks 7.00m. What is his displacement from his initial position?

2007-08-16 03:53:08 · 6 answers · asked by Adewale O 1 in Physics

which can be deceiving, what other characteristic do scientists use to determine astronomic distances? (Choose only one of the options below.)

brightness as compared to other objects
color of the object
the light emitted by the object
radio wave signature

2007-08-16 03:48:31 · 3 answers · asked by Anonymous in Astronomy & Space

What cells wont you fined in a plant cell that exists in an animal cell?

2007-08-16 03:41:54 · 3 answers · asked by Olivia P 1 in Biology

How far away are we realistically to travel outside our solar system and beyond? What sort of energy would we most likely use or are there more important factors to consider? Just curious :)

2007-08-16 03:41:13 · 4 answers · asked by Balrog 2 in Astronomy & Space

Two leads coming off of each 136 ohm resistor. A three phase power source with three leads. I need 10KW.

How do I wire up a delta? What voltage?

How do I wire up a WYE? What voltage?

2007-08-16 03:40:57 · 2 answers · asked by Anonymous in Engineering

I'm in physical science and we're talking about delta symbols, like for change and time and everything. So help? Thanks much.

2007-08-16 03:40:44 · 6 answers · asked by Bex 2 in Chemistry

When surveyed, 99.9% of shark attacks were performed on wet people... WHY?

2007-08-16 03:40:14 · 18 answers · asked by Anonymous in Zoology

2,9430 cm^3 =?L

2007-08-16 03:39:43 · 4 answers · asked by Ed G 2 in Physics