Science & Mathematics - 13 January 2007

can someone please explain how to do this problem 3+4/5 < line underneath this and1-9/16

2007-01-13 10:35:53 · 3 answers · asked by gail 1 in Mathematics

2007-01-13 10:34:03 · 2 answers · asked by wish 2 in Mathematics

2007-01-13 10:29:50 · 1 answers · asked by grace5788 2 in Other - Science

Plaskett's binary system consists of two stars that revolve in a circular orbit about a cnenter of mass midway between them. This means that the masses of the two stars are equal. If the orbital velocity is 220000 m/s and the orbital period of each is 1546560 sec, find teh mass M of each star. please include details!!!

2007-01-13 10:29:23 · 4 answers · asked by Anonymous in Physics

a.ac=bc
b.ab+bc=ac
c.all
d.ab=bc
e.none

2007-01-13 10:28:17 · 4 answers · asked by briafly20 1 in Mathematics

Comet McNaught is getting so close to the sun that it has become bright enough to see in daylight. http://spaceweather.com/ Has anyone looked? Has anyone seen it? We are clouded out in New England.

2007-01-13 10:28:09 · 2 answers · asked by Cirric 7 in Astronomy & Space

Please answer whoever knows a lot about science!! I really need information about her and the name for a project!

2007-01-13 10:27:23 · 6 answers · asked by Cat 2 in Physics

The idea is that if you're moving faster than light you are able to be at a location before light has reached it and therefore before the event occurred.

2007-01-13 10:26:56 · 3 answers · asked by flongkoy 2 in Physics

2007-01-13 10:26:45 · 6 answers · asked by pirateron 5 in Geography

2007-01-13 10:25:32 · 2 answers · asked by carnavaleria 1 in Chemistry

I'm looking for pictures of a planet (OTHER than Earth). I assumed the two easiest to find would be Mars or the Moon. The biggest hurdle I have in finding the pictures is that I also need the longitude and latitude listed with them.

Any ideas?

2007-01-13 10:24:43 · 7 answers · asked by Anonymous in Astronomy & Space

A mower's dolly is used to transport a refrigerator up a ramp into a house. The refrigerator has a mass of 115 kg. The ramp is 2.10 meters long and rises 0.850 meters. The mover pulls the dolly with a force of 496 N up the ramp. The dolly and ramp constitute a machine.

a. What work does the work do?
b. What is the work done on the refrigerator by the machine?
c. What is the efficiency of the machine?

Please help me with this question.
I'm having trouble understanding it.

2007-01-13 10:20:37 · 2 answers · asked by vicky p 1 in Physics

trying to explain that in the future we will build something powerfull enough to fly into space, and leave a satellite up in space so that we can talk on "cell phones" where two people from across the world can talk to each other. Can you imagine that?

2007-01-13 10:18:18 · 7 answers · asked by Anonymous in Astronomy & Space

2007-01-13 10:16:54 · 13 answers · asked by Anonymous in Biology

2007-01-13 10:15:10 · 6 answers · asked by nidya 1 in Astronomy & Space

1)size
2)temp
3)# of moons
4)distence from the sun
5) revolution

i need all this infromation plz help me

2007-01-13 10:14:05 · 5 answers · asked by Anonymous in Astronomy & Space

2007-01-13 10:11:18 · 6 answers · asked by Anonymous in Earth Sciences & Geology

2007-01-13 10:08:36 · 3 answers · asked by Greybeard 7 in Geography

2007-01-13 10:07:01 · 7 answers · asked by CHAD 1 in Chemistry

2007-01-13 10:02:49 · 2 answers · asked by Alex 2 in Biology

s + 2t =5
7r - 35 + t = 20
2t = 8

2007-01-13 10:02:21 · 5 answers · asked by kayci g 1 in Mathematics

Find the inverse function of each function:

* y = 4

*F(x) = 3x

*g(x) = 3x - 1

2007-01-13 10:02:15 · 6 answers · asked by poetic_lala 5 in Mathematics

2007-01-13 10:01:49 · 15 answers · asked by Anonymous in Earth Sciences & Geology

2007-01-13 10:01:27 · 2 answers · asked by Alex 2 in Biology

I don't quite understand why it's unsafe to use cell phones in medical facilities. They say it can affect some equipment, but how exactly? Even if we don't use the phones and have them off, aren't the frequencies still transmitting through the air? Please help me understand. Thank you!

2007-01-13 10:01:24 · 3 answers · asked by Bored Enough To Be Here 6 in Medicine

plz this is for a powerpoint

2007-01-13 09:57:24 · 5 answers · asked by kat 2 in Earth Sciences & Geology

regarding to "On the Conservation of Force" by Hermann von Helmholtz

thank you!

2007-01-13 09:56:10 · 3 answers · asked by Anonymous in Physics

Most scientists say pi is a never ending number. Does this mean it is impossible for a perfect circle to be created?

2007-01-13 09:54:15 · 14 answers · asked by harryfeelinlean 2 in Mathematics

2007-01-13 09:51:55 · 7 answers · asked by toburn41 2 in Astronomy & Space

in the UK it seems to flow anti clockwise... . I`ve just read on Wikipedia that "The supposed scientific knowledge that drains flow differently in the Southern Hemisphere because of the Coriolis effect is actually a myth - the coriolis effect does influence the direction of the flow, but other factors (such as how the water is injected into the bowl) have a much greater impact, making the coriolis effect negligible."

so here`s the question, which way does water flow on the Equatorial line, or nearest to the centre point that will cause a difference if any?

2007-01-13 09:51:42 · 11 answers · asked by fluxpattern® 5 in Earth Sciences & Geology