Science & Mathematics - 4 November 2007

46.) 3.8y + -4.7 = 3.8y + 17

No Solution?

2007-11-04 07:39:53 · 6 answers · asked by Anonymous in Mathematics

What is the maximum speed with which a 1300 rubber-tired car can take this curve without sliding? (Take the static coefficient of friction of rubber on concrete to be 1.0.)

2007-11-04 07:39:38 · 4 answers · asked by venessadauby 1 in Physics

How do you reduce this

2007-11-04 07:39:33 · 6 answers · asked by Anonymous in Mathematics

Is it possible to see the little dipper and the big dipper in Southern California?

2007-11-04 07:37:57 · 5 answers · asked by Anonymous in Astronomy & Space

Can someone answer this please?

2007-11-04 07:36:15 · 3 answers · asked by dk 1 in Mathematics

a 15kg box is released on a 32 degress incline and accerlerates at 0.30 ms2 what is the friction force and the coefficent of kinetic friction

2007-11-04 07:33:17 · 3 answers · asked by Anonymous in Physics

I just need to know about how much is left, and how long it will last, and I really need a link to a website where you got this information please. Thank You

2007-11-04 07:30:41 · 5 answers · asked by Will 1 in Earth Sciences & Geology

Well, at least i think its tough... i have NO idea where to even begin:

(e^(arctan(y)))dy / (1+y^2)

Thanks for the help

2007-11-04 07:26:09 · 2 answers · asked by Anonymous in Mathematics

2007-11-04 07:25:42 · 28 answers · asked by Anonymous in Astronomy & Space

This is something I'm having trouble with in a course I'm doing in Seismic Processing. I guess it is really a question regarding Digital Signals Processing in general, which is used in several areas including music, and engineering, etc.

2007-11-04 07:21:21 · 1 answers · asked by Anonymous in Earth Sciences & Geology

Trisomy 21 or Downs Syndrome occurs when there is a normal diploid chromosomal complement or 46 chromosomes plus 1 extra chromosome #21. Such individuals therefore have 47 chromosomes. Assuming that mating occurs between a female w/ Downs Syndrome and a normal 46 chromosome male. What porportion of the offspring would be expected to have Down Syndome

2007-11-04 07:19:41 · 6 answers · asked by damigurl05 1 in Biology

Is there a college that offers parapsychology as a class?? Or course or whatever?? Or is it a career that you don't have a degree in?

2007-11-04 07:17:24 · 5 answers · asked by Aaron 1 in Parapsychology

...host population,why?

2007-11-04 07:13:06 · 4 answers · asked by Anonymous in Zoology

Assume that in a series of experiments, plants w/ round seeds were crossed to plants w/ wrinkled seeds and the following offspring were obtained: 220 round and 180 wrinkled

a) what are the most possible genotype of each parent
b)what genotype and phenotypic ratios are expected in an F2 self-cross of a round plant

2007-11-04 07:11:52 · 1 answers · asked by damigurl05 1 in Other - Science

2007-11-04 07:11:10 · 8 answers · asked by Morag C 1 in Astronomy & Space

2007-11-04 07:10:31 · 6 answers · asked by Anonymous in Mathematics

the population of the world in 1987 was 5 billion and the relative growth rate was estimated at 2 percent per year. assuming that the world population follows an exponential growth model, find the projected world population in 1995.
________________ billion

2007-11-04 07:09:49 · 6 answers · asked by star baller 360 5 in Mathematics

i know that leaves get their green pigmentation from chloroplasts, but where do fruits get such bright exotic colors?

2007-11-04 07:07:51 · 1 answers · asked by kmm333 4 in Botany

In Cattle the polled (hornless) condition (P) is dominant over the horned (p) phenotype. A particular polled bull is bred to 3 cows. With cow A, which is honred, a half calf is produced; with a polled cow B a horned calf is produced; and with honred cow C a polled calf is produced. What are the genotype of the bull and the three cows, and what phenotypic ratios do you expect in the offspring of the three matings?

2007-11-04 07:07:34 · 1 answers · asked by damigurl05 1 in Biology

Help...what is graphing inequalities in 1 variable and graphing lines and 2 variable inequalities ? If you could maybe give me an example. I am really lost..

2007-11-04 07:07:16 · 2 answers · asked by Jenniefrizzzle 4 in Mathematics

what connections can you make of a cell and a airplane?
i need these...
chloroplasts
cytoplasm
cell membrane
vacuole
nucleus
nucleolus
mitochondria
Endoplastic Reticulum
Golgi Apparatus
Ribosomes
Lysosomes

THANKS!

2007-11-04 07:06:27 · 3 answers · asked by becky 2 in Biology

2007-11-04 07:05:26 · 5 answers · asked by Anonymous in Mathematics

I want to see which can of soda has more density, so i put each of the soda in a pitcher half filled with water. As a result, the can of diet soda floated in the water and the regular soda sank in the water. So it mean the the can of regular has more density then the diet one. However, the volumn of water in the pitcher went up to same level for both can of soda. I want to know why one float and other sink but the volumn of water in the pitcher is the same for both can of soda? So which can has more density? If one has more density than the other , then why the the volumn of water is the same for both can?

2007-11-04 07:02:42 · 5 answers · asked by phuongN 1 in Other - Science

i don't know if i did this problem right. can someone help me w/ it?
log (little 3 at bottom) (2x+1)=4

is the answer 40? cause thats what i got.

2007-11-04 07:02:27 · 8 answers · asked by Hannah B 1 in Mathematics

2007-11-04 07:02:13 · 5 answers · asked by Taylor T 1 in Zoology

No seriously, if I want to ever come home and not be yelled at again, I need to know this!!

2007-11-04 07:02:10 · 3 answers · asked by Anonymous in Astronomy & Space

On a horizontal frictionless table, masses A and B (3 kg, 6 kg) slide to the right and left, respectively. They have speeds of 3 m/s and 1 m/s, respectively. The two masses collide, and bounce off each other. After the collision, they travel in opposite directions at speeds of 1.5 m/s and 1.250 m/s, respectively.
(Note:In this problem, please use + dir = right, - dir = left, to indicate direction.)

a.) Calculate A's momentum:
before collision:
after collision:
Explain why it is NOT conserved.


b.) Calculate B's momentum:
before collision: kg*m/s
after collision: kg*m/s
Explain why it is NOT conserved.


c.) Calculate the A+B system's momentum:
before collision: kg*m/s
after collision: kg*m/s
Explain why IS it conserved.


d.) Calculate the kinetic energy of the A+B system:
before collision: J
after collision: J

2007-11-04 07:02:01 · 1 answers · asked by =P 6 in Physics

What steps would be taken to solve this for an answer in scientific notation without using a calculator?

2007-11-04 06:59:39 · 3 answers · asked by ian02766 1 in Mathematics

Any info on tips or operation of a electric threader.
Is this a hard machine to use. Thanks

2007-11-04 06:58:59 · 1 answers · asked by jmmlandrea 3 in Engineering

in need of directions on how to make a seismograph. for scitt kit

2007-11-04 06:54:31 · 1 answers · asked by c robert 1 in Earth Sciences & Geology