Science & Mathematics - 18 October 2007

2007-10-18 13:18:01 · 5 answers · asked by Nascar in Sparta ? 2 in Astronomy & Space

2007-10-18 13:16:24 · 1 answers · asked by twon744 2 in Earth Sciences & Geology

If an automobile rounds this curve at 30 M/S , what is the minimum coefficient of static friction between tires and road needed to prevent skidding?
Express your answer using two significant figures.

2007-10-18 13:16:03 · 1 answers · asked by Bugz 3 in Mathematics

2007-10-18 13:15:23 · 11 answers · asked by Kristina 1 in Mathematics

its gonna be 30 C MAx = 86 F on sunday , 18 MIN , do u guys think that is good enough?

2007-10-18 13:15:02 · 3 answers · asked by Anonymous in Weather

The position function is s(t)=t^3 - 3t^2 + 4 for an object moving along a linear path. distance = meters
Answer the following:
(a) On what interval(s) is the object moving to the right? to the left? changing direction?
(b) Determine the position, velocity, and acceleration when t=0 and t=3 seconds and then describe the motion at these points in time.
(c) Determine the distance traveled after the first 5 seconds.
(d) Determine the displacement after the first 5 seconds.

I really don't understand, so could you please explain how to solve the problem as well? Thank-you!

2007-10-18 13:14:13 · 1 answers · asked by stephx 1 in Mathematics

A newborn is born with sickle cell anemia, a genetic disease in which substitution of one amino acid results in abnormal hemoglobin. Explain to the parents how the substitution can have such a drastic effect on the structure of the protein.

2007-10-18 13:11:56 · 2 answers · asked by mike p 2 in Medicine

Does anybody know what it is?

2007-10-18 13:11:54 · 3 answers · asked by rayrayiscrazy 2 in Mathematics

1. y = x/(1+cos x)

2. y= cos x / (1+sin x)

2007-10-18 13:11:52 · 1 answers · asked by Anonymous in Mathematics

What is Pythagoras,s thoery of the hypotenuse ,and why is it so simple and such a perfect,THRM.and such a perfect aid to all goematry and eguations

2007-10-18 13:09:43 · 3 answers · asked by oisintirnaog 2 in Physics

I've heard it in class so i wanna know >_>

2007-10-18 13:08:43 · 19 answers · asked by Anonymous in Mathematics

I'm finding the x-coordinates of x^4-3x^2+2 when its derivative is 2. I put the derivative = to 2, factored, and got (x+1)(4x^2-4x-2)=0. Now what? I CANNOT USE A CALCULATOR (take home quiz)

2007-10-18 13:08:00 · 3 answers · asked by Anonymous in Mathematics

Hannah rolls a 7.0 kg bowling ball down the alley. One pin is still standing, and Hannah hits it head-on with a velocity of 9.0 m/s. The 2.0 kg pin acquires a forward velocity of 14.0 m/s. What is the velocity of the bowling ball??

2007-10-18 13:07:59 · 1 answers · asked by Anonymous in Physics

2007-10-18 13:07:38 · 5 answers · asked by jdg259@sbcglobal.net 1 in Mathematics

Could someone please help me please

2007-10-18 13:07:22 · 8 answers · asked by Anonymous in Mathematics

(8x / x-3) / (1 / 5x-15)


Thanks for your help!

2007-10-18 13:06:54 · 2 answers · asked by DoWHATiDO 3 in Mathematics

A pitcher throws a baseball horizontally from the mound to home plate. The ball falls 0.918 m (3.01 ft) by the time it reaches home plate 18.3 m (60 ft) away. How fast was the pitcher's pitch?
(answer in m/s)

2007-10-18 13:06:35 · 2 answers · asked by Anonymous in Physics

It's a proof:

Let G be a group. Prove that the mapping alpha(g)=g^(-1) for all g in G is an automorphism if and only if G is Abelian.

2007-10-18 13:06:14 · 2 answers · asked by Randall N 1 in Mathematics

2007-10-18 13:04:45 · 4 answers · asked by Chhidori 2 in Mathematics

excluding collapsed stars etc., like something you can hold in your hand without being sucked into it.

2007-10-18 13:04:21 · 5 answers · asked by pythagoras 2 in Chemistry

Does it try to proved that there is nothing called time..
# Need real explanation ..plz....
# How does it relate to time..?

2007-10-18 13:04:00 · 1 answers · asked by world 1 in Physics

Here is the problem.

Is 1 over 3 (fraction) a solution of z + 4 over 2 - z (fraction) = 13 over 5 (fraction)

I can not figure out how to find the answer. I don't know what do with the fraction's. Can someone show me? Thank you!

2007-10-18 13:03:55 · 2 answers · asked by Here Is Holly. 1 in Mathematics

2007-10-18 13:02:39 · 1 answers · asked by Brian n 1 in Mathematics

I looked everywhere. I need a current event for agricultural
class. something short not to long any good ones
please help its due tomorrow

2007-10-18 13:00:16 · 6 answers · asked by Anonymous in Agriculture

Ever since the compass was invented, navigators have noticed that the direction indicated by the needle changes slightly each year. Over the last century, both the north and south magnetic poles have been drifting north (that is, toward the geographic north pole, which itself wanders somewhat, but let's not make this more complicated than it already is). The north magnetic pole historically has moved at a rate of about ten kilometers per year, but has lately accelerated, heading toward Russia at four times that rate.


ANyone have any clues or good support evidence into when this would occur?

2007-10-18 12:57:41 · 7 answers · asked by SwiftKill 4 in Astronomy & Space

A 0.06 kg pinecone falls 14.7 m to the ground, where it lands with a speed of 16 m/s.
(a) With what speed would the pinecone have landed if there had been no air resistance?

(b) Did air resistance do positive work, negative work, or zero work on the pinecone?
---Select--- positive negative zero

2007-10-18 12:57:02 · 1 answers · asked by Anonymous in Physics

mike was walking through a railway train tunnel when he suddenly heard a train approaching. looking at the markers inside the tunnel, he saw that he was 2/5 the distance from one end of the tunnel and 3/5 the distance from teh other end of the tunnel.

if mike runs as fast as he can towards either end, he will escape from the tunnel just as the train reaches him.

if the train is moving 60km/h, how fast is mike running?

thanks for the answers!

2007-10-18 12:54:28 · 6 answers · asked by Patrick P 1 in Mathematics

Suppose that a cyclic group G has exactly three subgroups: G itself, {e}, and a subgroup of order 7. How many elements are in G? What can you say if 7 is replaced with p where p is a prime?

(e is the identity)

Ok, aren't e and G always subgroups of G? Is the answer supposed to be 7? I don't know how to think about this.

2007-10-18 12:53:17 · 3 answers · asked by Anonymous in Mathematics

government computer chips in everyone's brains. It is really scary but true. Do you think we will ever be able to stop this tomfoolery?

2007-10-18 12:51:07 · 2 answers · asked by Anonymous in Other - Science

2007-10-18 12:51:01 · 3 answers · asked by Dave W 1 in Botany