Science & Mathematics - 14 December 2006

2006-12-14 06:30:12 · 2 answers · asked by BongChampess 1 in Mathematics

If a persons ear drum's burst due to either loud noise, or de-pressurisation, would the ear drum grow back again, or would the person remain deaf from that time onwards

2006-12-14 06:30:09 · 7 answers · asked by Anonymous in Medicine

2006-12-14 06:29:54 · 5 answers · asked by Anonymous in Zoology

2006-12-14 06:28:57 · 2 answers · asked by Anonymous in Medicine

figure it out

2006-12-14 06:27:00 · 6 answers · asked by Anonymous in Mathematics

I need it for an experiment.

2006-12-14 06:25:48 · 2 answers · asked by Josh 2 in Botany

Every one knows about the third dimension. Is there any one who can tell me about the rest?

2006-12-14 06:23:58 · 11 answers · asked by Anonymous in Physics

1. Under what conditions can a first-class lever be used to magnify force? Give an example.

2.Under what conditions can a first-class lever be used to gain speed? Give an example.

3.Rocks used to be used to build the great pyramid of Egypt had to be moved great verticle distances. suggest how torque may have been used to accomplish the feat.

4. Name 5 activities in your life that do not involve torque.

5. Under what conditions is the mechanical advantage is greatest?

6.Should the clockwise torque be equal in magnitude and opposite in direction to the counterclockwise torque? Explain your answer.

7. What factors may have contributed to the differences between the clockwise torque and the counterclockwise torque?

2006-12-14 06:23:27 · 2 answers · asked by looking for knowledge 1 in Physics

200.0 Joules of heat is required to raise the temperature of an object sample by 3.00ºC. If the specific heat of the object is .01490 J/gºC, what is the mass of the sample in kilograms?

0.993 x 10-3 kg
4474.3 kg
4.474 kg
40.268 kg
0.067 kg


A 2.00-kg metal object requires 5020 J of heat to raise its temperature from 20.0°C to 40.0°C. What is the specific heat capacity of the metal?

126 J/(kg • °C)
106 KJ/(kg • °C)
126 cal/(kg • °C)
142 kcal(kg • °C)

1146 joules of heat is released when a 100.0 gram sample of an unknown metal cools from 95.00°C to 65.00°C. Determine the specific heat of a metal.



0.755 J/g°C
1.22 J/g°C
.887 J/g°C
.3820 J/g°C

2006-12-14 06:19:57 · 2 answers · asked by queenpravato 1 in Chemistry

this question is a vector question.
In scalar product it is written"a.b cos(theta)" and in cross product it is written"a x b sin(theta)".
My question is ,in scalar product why "cos(theta)" is used? why not "sin(theta)" is used?
Also,in cross product why "sin(theta)" is used?why not "cos(theta)" is used?
Tell me reasons.

2006-12-14 06:19:11 · 3 answers · asked by star123 2 in Mathematics

2006-12-14 06:17:28 · 5 answers · asked by gabbybubbles 1 in Chemistry

2006-12-14 06:17:00 · 3 answers · asked by fantfoot25 1 in Mathematics

Lead metal is added to .100 M Cr(3+) (aq). What are [Pb(2+)], [Cr(2+)], and [Cr(3+)] when equilibrium is established in the reaction?

Reaction:

Pb(s) + 2Cr(3+)(aq) <----> Pb(2+)(aq) + 2Cr(2+)(aq)

Kc = 3.2E-10

note: (s), etc is states, (2+), etc is oxidation number, or ion

Would someone tell me how to do this problem? I want to know the steps. Thank you.

2006-12-14 06:16:46 · 1 answers · asked by kevin g 1 in Chemistry

2006-12-14 06:15:25 · 2 answers · asked by bekah_2009 2 in Biology

what is the mean, median, mode, variance and standard deviation of {4,6,7,5,9,4,3,4}

2006-12-14 06:15:02 · 2 answers · asked by fantfoot25 1 in Mathematics

what is the Ph of a solution whose hydronium ion concentration is 2.0 x 10(e-9) {neg. 9 exponent)M?
1) 12.6
2) 8.70
3) 9.30
4) 3.10

2006-12-14 06:14:24 · 2 answers · asked by barry b 1 in Chemistry

I'd like to know more about black holes, stars, systems... the whole organization of everything, the way it all works. I've been so curious, and your answers can give me starting points to research the basics. I am interested in reading the theories of Einstein and Stephen Hawking, but if I don't start at the beginning, I'll never undersand what I'm reading! :-)

2006-12-14 06:13:49 · 6 answers · asked by Sara 3 in Astronomy & Space

2006-12-14 06:13:35 · 2 answers · asked by madeulo0k 2 in Biology

2006-12-14 06:13:12 · 4 answers · asked by fantfoot25 1 in Mathematics

what is the [H3O+] if the solution has a hydroxide ion concentration of 2.0 x 10(e-5) {neg. 5exponent} M?
1) 6.0 x 10(e23)M
2) 5.0 x 10(e-10)M
3) 2.0 x 10(e-7)M
4) 2.0 x 10(e-9)M

2006-12-14 06:12:33 · 3 answers · asked by barry b 1 in Chemistry

This is to prove a friend wrong. Damn Monkeys

2006-12-14 06:09:34 · 9 answers · asked by big_daves_m8 1 in Zoology

my bf and I are ttc (have been for 6 months) and so far we haven't been successful. this month we had unprotected sex on the 9th and I was supposed to ovulate on the 10th...period due on the 24th...for the last couple of days i have been having cramps on my left side,been having a lot of gas, and eating a lot more, plus always tired...could i actually be pregnant?

2006-12-14 06:08:18 · 9 answers · asked by half angel half Devil 1 in Medicine

2006-12-14 06:07:21 · 9 answers · asked by beastman309 1 in Geography

2006-12-14 06:06:40 · 21 answers · asked by mzpuff2006 2 in Astronomy & Space

Translate the following statement into an algebraic equation. Let x represent the number. 12 less than 5 times a number is 18

Ching leaves San Francisco and travel toward San Francisco at 50 mi/hr., an hour later, Phil leave Los Angeles and travel toward San Francisco at 60 mi/hr. If the two cities are 380 miles apart, how many hours will it take for Ching to meet Phil

2006-12-14 06:05:27 · 7 answers · asked by Vioresa M 1 in Mathematics

Many thousands of years ago the Bible in ( Isaiah 40: 22 ) wrote :
22. He sits enthroned upon the circle of the earth, and its people are like grasshoppers. He stretches out the heavens like a canopy, and spreads them out like a tent to live in" This verse alone proves that the Bible describes correctly the round earth.
Not only does it describe exact ly what the Scientists discovered very recently that this Univrse is Expanding.



Why then did Clumbus a Christian sail accross the Ocean trying to find the End of the Earth.

2006-12-14 06:05:08 · 4 answers · asked by Charles H 3 in Earth Sciences & Geology

If heat-killed cells of a harmful strain virus somehow transform the DNA of living cells of a non-harnful virus, then wouldn't every virus thats been heat killed be dangerous to us?

2006-12-14 06:04:45 · 2 answers · asked by madeulo0k 2 in Biology

2006-12-14 06:00:14 · 11 answers · asked by Akash T 1 in Physics

2006-12-14 05:58:35 · 3 answers · asked by Swamy 1 in Engineering

2006-12-14 05:55:36 · 2 answers · asked by nasni801 1 in Engineering