Science & Mathematics - 2 February 2007

(a) What is the kenetic energy of a 2670-kg car that is traveling at 97.0 km/h?____kj
(b) How much work was fone to give the car this kenetic energy?____kj
(c) How much work was done to stop the car?_____kj

2007-02-02 06:11:41 · 2 answers · asked by Hey ;) 3 in Physics

There have been some Cosmologists/Astrophysicists who think that the Speed of Light may not have been constant, i.e. it may have had a different value in the early universe. If this proved to be true, since the Speed of Light is the "constant" C in E=Mc2, does this mean matter and energy would have had a different equivalence rate in an earlier era in the universe's history?

2007-02-02 06:07:42 · 8 answers · asked by chris_writerinsf 2 in Physics

amylase is an enzyme present in saliva that begins the breakdown of starch. It is specific to its chemical reaction.

2007-02-02 06:07:13 · 4 answers · asked by Diane S 1 in Biology

2007-02-02 06:06:41 · 4 answers · asked by frickenawesomekoreanandyouknowit 2 in Chemistry

2007-02-02 06:06:30 · 17 answers · asked by KIERAN W 1 in Physics

How much work was is needed to stop a 2710-kg car that is moving strait down the highway at 71.0 km/h?
_____*10____j

2007-02-02 06:01:42 · 1 answers · asked by Hey ;) 3 in Physics

I need the following for each of the bodies senses including the sense of semll( how we interpret smells and what we do), taste, vision, touch, pressure, balance, hearing.

1.Sensory receptor
2.peripheral nerve carrying signal to spinal cord
3. Ascending tract of spinal cord
4. Part of brain that processes the signal
5.Part of brain that is going to initiate motor response
6. Descending tract of spinal cord
7. Peripheral motor nerve
8. What muscle is moved


If anybody can help please do. I' ll do anything. Thanks.

2007-02-02 06:00:09 · 2 answers · asked by Anonymous in Other - Science

2007-02-02 05:59:02 · 13 answers · asked by Anonymous in Astronomy & Space

What was here before the big bang?

2007-02-02 05:57:54 · 6 answers · asked by mike 1 in Astronomy & Space

The measurements of th Uk are aprox 1/2 size of that of france however when i search for pictures of europe from space the Uk appears larger/same size of france. Is this not techincally impossible? i know why the Uk is shown on atlas's as bigger (the british empire wanted the Uk to loook bigger therefore more powerful) but pictures from space shouldnt be like this. Can anyone shed any light on this as im really confused

2007-02-02 05:55:48 · 8 answers · asked by saza_b_1984 1 in Astronomy & Space

2007-02-02 05:54:14 · 6 answers · asked by ahloha 1 in Medicine

such as they allow it to be easier to visualize such as making it like microsoft's equation editor in Word?

2007-02-02 05:50:09 · 6 answers · asked by Anonymous in Mathematics

I wear glasses and my nose is most powerful. I love and hate smells. They bring memories back to me . Do you feel that way ,also?

2007-02-02 05:49:43 · 6 answers · asked by TCC Revolution 6 in Biology

Me and my daughter are trying to grow mold on bread for a science experiment. It's been 3 days and still nothing. How long does it take before visible spores start to develop?

2007-02-02 05:49:32 · 10 answers · asked by pennylanegal 5 in Botany

What would be the differences between an engraved bronze plaque and an engraved aluminum plaque, besides color?

2007-02-02 05:48:59 · 5 answers · asked by Mr.L 3 in Engineering

2007-02-02 05:47:09 · 10 answers · asked by frickenawesomekoreanandyouknowit 2 in Chemistry

I assume I need to use the formula limx->a (f(x) - f(a)) / (x - a) but I'm not sure... any suggestions?

2007-02-02 05:46:41 · 6 answers · asked by Anonymous in Mathematics

IS THERE ANY ARTICLES ABOUT THIS

2007-02-02 05:44:12 · 5 answers · asked by ilovechocolate4eva 1 in Earth Sciences & Geology

3x-6y=6
9x-3y=8

2/3x-1/2y=3
1/3x-1/4y=3/2

4x+4y=5
2x-8y=-5

2007-02-02 05:43:35 · 4 answers · asked by Jules 4 in Mathematics

As n goes through the positive integers (i.e. n=1,n=2,...) How many different values can the remainder take when n^2 is divided by n+4?

a) 1
b) 4
c) 8
d) 9
e) infinitely many

2007-02-02 05:43:21 · 4 answers · asked by mongrel73 1 in Mathematics

2007-02-02 05:42:11 · 11 answers · asked by NICK T 1 in Zoology

Some people say it's the highest.

Is it true or false ?

2007-02-02 05:41:40 · 12 answers · asked by Anonymous in Mathematics

what kind of effect does B-complex vitamins have on the body? my urine is a really funny color, like a neon yellow...like glow in the dark type of yellow. any reasons why?

2007-02-02 05:39:40 · 3 answers · asked by Natalia 1 in Biology

2007-02-02 05:39:32 · 3 answers · asked by Miss LaStrange 5 in Biology

please answer it pointwise and giive the answer scientifically reffering some enginneering books

2007-02-02 05:36:10 · 1 answers · asked by ABHISHEK 1 in Physics

this is a science project about the periodic table of elements.. my goal is to persuade people to buy silver. What can i tell them so i can persuade them to buy silver? i have researched this element throughly but i need HELP! any help would help me alot! THANX!!

2007-02-02 05:33:25 · 5 answers · asked by Angel 2 in Other - Science

If the compound interest on a certain sum for 2 years is Rs.21.What could be the simple interest.???...Answer---Rs.20..HOW.???..

2007-02-02 05:30:23 · 3 answers · asked by Anonymous in Mathematics

2007-02-02 05:30:14 · 11 answers · asked by tlt 1 in Biology

Is it total atmospheric effect or is there any distance related phenomenon which makes this visual so different? And why is it only some of the time? I'm assuming it's like a big magnifying glass when its closer to the Horizon but why not the same effect in the middle of the daytime (or with the moon nighttime) sky?

2007-02-02 05:29:36 · 3 answers · asked by Anonymous in Astronomy & Space

From a book or class.

2007-02-02 05:28:59 · 13 answers · asked by Anonymous in Mathematics