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Science & Mathematics - 11 November 2007

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Agriculture · Alternative · Astronomy & Space · Biology · Botany · Chemistry · Earth Sciences & Geology · Engineering · Geography · Mathematics · Medicine · Other - Science · Physics · Weather · Zoology

In my physics class we have to design shoes so that we can walk on eggs the material can only be 10 cm thick and it has to resemble a shoe w/o any prefabricated shoes you must make them yourself. and be able to walk on eggs w/o crushing them. Any ideas?

2007-11-11 06:28:53 · 3 answers · asked by Anonymous in Physics

This will be my first telescope and I want a decent one that will give me a good look at the sky.

What zooms ect should I look for?

2007-11-11 06:27:42 · 11 answers · asked by Anonymous in Astronomy & Space

Find the volume of the wrinkled sphere.

Wrinkled sphere
rho = 1 + 0.2 sin(8 theta) sin(phi)

0 <= theta <= 2 Pi)

0 <= phi <= Pi


I need help with my integration.
S(S(S(?,rho,?,?),phi,0,Pi),theta,0,2*Pi)

2007-11-11 06:25:18 · 1 answers · asked by info2know 3 in Mathematics

2007-11-11 06:25:17 · 2 answers · asked by lvthebeach 2 in Mathematics

2007-11-11 06:24:49 · 1 answers · asked by Anonymous in Physics

Will the ground cave in where the oil was

2007-11-11 06:23:16 · 12 answers · asked by ace d 1 in Earth Sciences & Geology

2007-11-11 06:22:59 · 2 answers · asked by Anonymous in Botany

2007-11-11 06:19:38 · 13 answers · asked by Anonymous in Astronomy & Space

2007-11-11 06:18:37 · 15 answers · asked by B W 1 in Physics

2007-11-11 06:18:35 · 4 answers · asked by hoopshola 1 in Geography

2007-11-11 06:18:31 · 6 answers · asked by Anonymous in Mathematics

Andy (mass 80 kg) uses a 3.0-m-long rope to pull Bob (mass 60 kg) across the floor ( mue=0.20 ) at a constant speed of 1.0m/s. Bob signals to Andy to stop by "plucking" the rope, sending a wave pulse forward along the rope. The pulse reaches Andy 150 ms later. What is the mass of the rope?

2007-11-11 06:16:44 · 2 answers · asked by rochesmk 2 in Physics

two small spheres each with a mass of 0.20g are suspended by light strings from a common point. They are given the same electrical charge and come to equilibrium with each string at an angle of 5 degrees with the vertical. If the string is 30 cm long what is the magnitude of the charge on each sphere?

2007-11-11 06:09:22 · 1 answers · asked by centeroline76 1 in Physics

well my aunt saw a black worm crawling up my window...

? the size my grandpa described was like this

(make a L by using your thumb and finger (index finger))

and that's the size my grandpa described..

2007-11-11 06:08:21 · 3 answers · asked by Justin Kalkimer 3 in Zoology

What are nucleation sites, and how can you provide more of them in order to increase crystal growth?

I'm only a 9th grader in high school, so is there anyone who can explain this to me on simple chemistry/geology terms?

2007-11-11 06:04:30 · 2 answers · asked by wrooney97 2 in Earth Sciences & Geology

I have heard alot like a BIG meteor hit, or the ice age, or that a BIG valcano erupted and killed them. but which one is true or is there another possibility?

2007-11-11 05:59:55 · 9 answers · asked by Shyllow 1 in Other - Science

A 4.52 kg block is pushed along the ceiling with a constant applied force of 85.9 N that acts at an angle of 60.5 degrees with the horizontal. the block accelerates to the right at 5.85 m/s^2. Find the coefficient of kinetic friction between the block anf the ceiling.

2007-11-11 05:59:50 · 1 answers · asked by Anonymous in Physics

May I please have a star? Ive never gotten one before......

2007-11-11 05:59:22 · 6 answers · asked by Amy O 2 in Astronomy & Space

I have a condo that was built in the 70s.

In many of my light fixtures where incandescent light bulbs work perfectly, compact florescent light bulbs won't work.

In some sockets, they won't work at all.
In others, they will flicker, be dim, or work intermittently.
In others, they work all the time - no problems.

Changing the fixture does not appear to have a significant effect. I have changed light fixtures in a few places, and if the CF bulb had problems before, it will have problems with the new fixture as well.

Any idea as to a cause or a possible resolution?

2007-11-11 05:58:30 · 4 answers · asked by great_and_mighty_adam_levine 4 in Engineering

This is the place to tell! I love scary BUT they have to be TRUE!

2007-11-11 05:57:54 · 11 answers · asked by AlexisLee 1 in Paranormal Phenomena

Please explain to me how these problems are solved,I have noooo clue!

1) a baseball player slides into third base with an initial speed of 7.90 m/s. if the coefficient of kinetic friction between the player and the fround is .41, how far does the player slide before coming to rest?

2)a child does down a playground slide with an acceleration of 1.05 m/s2. find the coefficient of kinetic friction between the child and the slide if the slide is inclined at an angle of 35degrees below the horizontal.

3)hopping into your Porsche, you floor it and accelerate at 12m/s without spinning the tires. determine the minimum coefficient of static friction between the tires and the road needed to make this possible.

4)when you push a 180-kg book resting on a tabletop,it takes 2.25 N to start the book sliding.once it is sliding, however,it takes only 1.50N to keep the book moving with constant speed. what are the coefficients of static and kinetic friction between the book and the tabletop?

2007-11-11 05:57:43 · 1 answers · asked by Anonymous in Physics

1. If water is a linear molecule, then it would probably be nonpolar
2. If water is a linear molecule, then London dispersion force would not be one of its IMF
3. If water is a linear molecule, then it will probably have higher intermolecular forces
4. If water is a linear molecule, then its boiling point will probably still remain at 100 C

Thanks!

2007-11-11 05:56:32 · 2 answers · asked by chemquestions1 1 in Chemistry

it's in my hw, please help.

by experimentation it has been found that the molecule of dinitrogen oxide has a non-zero dipole moment and that ions of mass 44, 30, 28, 16 and 14 are obtained in the mass spectrometer. which of the structures is supported by the data? show how the data are consistent with this structure.

well, i would guess it's NNO, but i don't understand the data given

thank u very much

2007-11-11 05:53:50 · 2 answers · asked by Ganbatteru 3 in Chemistry

A major change that occurred in the evolution of plants from their algal ancestors was the origin of a multicellular diploid stage. What advantage would multicellularity provide in this stage of the life cycle?
a.enhanced potential for independence of the diploid stage from the haploid stage
b.increased fertilization rate
c.increased gamete production
d.increased size of the diploid stage
e.increased spore production from each fertilization event

2007-11-11 05:46:39 · 2 answers · asked by blueant999 1 in Biology

why is that? can you explain it to me please?

thank you

2007-11-11 05:45:17 · 2 answers · asked by Ganbatteru 3 in Chemistry

calculate mass of silicon using the following exact atomic masses and % abundance for each of it's naturally occuring isotopes? ^28Si(92.21%), atomic mass of 27.97693 amu, ^29Si(4.70% atomic mass of 28.97649 amu, and ^30Si(3.09) atomic mass of 29.97376 amu.
please explain how you could the answer thank you so much

2007-11-11 05:44:28 · 2 answers · asked by Karina S 1 in Chemistry

Is questioning the existence of ghosts wrong?Is it the moral equivlent of questioning the existence of God?Does either subject have a place in a Science forum?

2007-11-11 05:43:19 · 11 answers · asked by Dr. NG 7 in Other - Alternative

According to my logic (which is probably incorrect), since the moon is always in orbit around the earth, it should come between the earth and the sun at least every month or so. Please tell me why this is not so.

2007-11-11 05:41:12 · 2 answers · asked by mrmoe15 2 in Astronomy & Space

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