Science & Mathematics - 11 December 2006

A single bead can slide with negligible friction on a wire that is bent into a circular loop of radius 15.0 cm. The circle is always in a vertical plane and rotates steadily about is vertical diameter with (a) a period of 0.450 s. The position of the bead is described by the angle theta that the radial line, from the center of the loop to the bead, makes with the vertical. At what angle up from the bottom of the circle can the bead stary motionless relative to the turning circle? (b) Repeat the problem if the period of the circle's rotation is 0.850 s.

2006-12-11 05:06:00 · 1 answers · asked by R C 2 in Physics

internal energy of the system?

2006-12-11 05:05:13 · 1 answers · asked by Anonymous in Physics

Its all there ^

2006-12-11 05:04:21 · 8 answers · asked by superscott789 1 in Chemistry

Im having a very hard time in math at the moment, and it doesn't help that my teacher can't explain these problems all too well...

Im asking somebody to please explain how to do these problems so that I can do the rest on my own...

All help is really appreciated, thank you

1. 27 equals 9% of ___
2. 40% of ___ = 20
3. 40% of ___ = 20
4. 8 = 4% of ___

2006-12-11 05:03:11 · 6 answers · asked by David H 1 in Mathematics

2006-12-11 05:02:59 · 4 answers · asked by imRockinTheStage 2 in Physics

What kind of rock are the arches made of? what else is there specialabaout this park?

i need this ansers ASAP!!!!!!!!!!!!!!!!!!!!!!!! PLEASE!!!!!!!!!!!! thanx!!!!!!!!!!!!!

2006-12-11 05:01:56 · 3 answers · asked by S_Q_R 1 in Geography

It may look complicated but sp sqaured q to the power of 5 multiplied by 6p to the power of 5 q cubed.

2006-12-11 05:01:31 · 1 answers · asked by terminator_3000 1 in Mathematics

I have a project in Biology due,a dn it is on DNA. Can someone please help me?

2006-12-11 05:00:32 · 5 answers · asked by Missy 1 in Biology

2006-12-11 05:00:27 · 10 answers · asked by Anonymous in Astronomy & Space

2006-12-11 04:59:07 · 6 answers · asked by Anonymous in Astronomy & Space

Suppose that the Grays really are extra-terrestrials; do they hail from Orion or from some other dimension?

2006-12-11 04:58:28 · 10 answers · asked by Anonymous in Paranormal Phenomena

i found this question in a workbook:
f(x) = |4-x| , x=6
whats that line "|" enclosing 4-x for??
the answer is -2, btw
pls help me maths experts out there

2006-12-11 04:58:13 · 5 answers · asked by quinie leong 3 in Mathematics

2006-12-11 04:54:26 · 4 answers · asked by Anonymous in Physics

If I have a solution of some sort, what can I do to find out if it is acidic or not?

2006-12-11 04:52:04 · 10 answers · asked by superscott789 1 in Chemistry

2006-12-11 04:51:57 · 9 answers · asked by styles4u 4 in Mathematics

A grating has exactly 7000 lines uniformly spaced over 2.54 cm and is illuminated by light from a mercury vapor discharge lamp. What is the expected angle for the third-order maximum of the green line ( = 546 nm)?

2006-12-11 04:50:10 · 1 answers · asked by Anonymous in Physics

2006-12-11 04:49:59 · 2 answers · asked by Anonymous in Physics

2006-12-11 04:48:46 · 20 answers · asked by Anonymous in Chemistry

could you name a few?

2006-12-11 04:46:00 · 11 answers · asked by Kristi H 2 in Mathematics

I'm not a cleaning freak, but i'm concerned about my health and others. When we touch something, do germs stay there until we touch the thing again? example, A milk gallo. Lots of people probably touched the gallon I had purchased and then it goes into my refrigerator. Do a have those germs from many people inside there? do i have to wipe things off? This same question goes for everything that we or people touch and stays sit for months until we touch it again. How long germs live in one place?

2006-12-11 04:44:18 · 4 answers · asked by Dimitri VanHorn 1 in Biology

2006-12-11 04:43:24 · 12 answers · asked by Anonymous in Mathematics

problems with the special theory of relativity

2006-12-11 04:43:03 · 6 answers · asked by NoClue W 1 in Physics

2006-12-11 04:40:17 · 4 answers · asked by Anonymous in Biology

2006-12-11 04:39:36 · 3 answers · asked by Anonymous in Mathematics

Imagine that you were studying a primitive organism found on mars. Within this organsim, there are 2 compounds that look like promising possibilities for the hereditary material of the organism. Each compound contains an element NOT found in the other.
How could you use radioactive isoptopes to determine which of the 2 componds is replicated as the cells of the organism replicate & divide?
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I don't really understand the uses of radioactive isotopes, I've been trying to read up on it- but it still doesn't make complete sense & I'm not quite sure how to apply it to situations like the one above. Can someone please help explain it to me. I would really appreciate it. Thank You! = )

2006-12-11 04:37:48 · 2 answers · asked by Miss*Curious 5 in Biology

-Unbroken stretches of proteins
-Unbroken stretches of nucleotides
-Alternating segments of proteins called introns and exons
-Alternating segments of nucleotides called introns and exons

2006-12-11 04:37:36 · 5 answers · asked by PeachyFixation 4 in Biology

2006-12-11 04:37:16 · 3 answers · asked by dwillchick 1 in Chemistry

is the sweets is one of the reason for increasing the diabetes

2006-12-11 04:37:02 · 16 answers · asked by Anonymous in Medicine

2006-12-11 04:36:40 · 20 answers · asked by Salamander 2 in Geography

Calculus Integrals

2006-12-11 04:34:35 · 3 answers · asked by meg 1 in Mathematics