Science & Mathematics - 26 November 2007

My lad is really struggling with is a level

2007-11-26 21:42:26 · 12 answers · asked by K Rigby 1 in Mathematics

If mass "resists" change then shouldn't we need to apply extra energy to overcome the resistance? If not, then how would a theoretical mass without inertia be any different than mass WITH inertia. We can't expect that objects would move about and change directions without any force applied to the whatsoever, yet I cannot find anywhere a description of the energy that must be applied just because of the inertia. I have asked questions here before and keep getting answers that address the friction. But I thought that inertia was a property inherent in mass under all conditions. Why would it go away without friction? I investigated "impulse" but that seems different than what I am trying to find.

2007-11-26 21:36:56 · 7 answers · asked by Anonymous in Physics

2007-11-26 21:29:46 · 4 answers · asked by Yuks 1 in Physics

2007-11-26 21:27:27 · 4 answers · asked by Yuks 1 in Physics

Use Descartes' Rule of Signs and the Rational Zeros Theorem to find all real zeros, then use the zeros to factor over the real numbers.

f(x) = x^4 + 6x^3 + 11x^2 + 12x + 18

2007-11-26 21:16:24 · 6 answers · asked by Anonymous in Mathematics

if we send a spacecraft to Mars or some other destinations in or outside our solar system, these crafts could be flying around at speeds of at least 100 miles a second or more, and there are other space debris...some of them very small.. out there hurtling around the cosmos at speeds even higher than that, how do we make sure a hyperspeed collision does not occur and the craft is obliterated?

2007-11-26 21:12:17 · 6 answers · asked by bush l 1 in Astronomy & Space

2007-11-26 21:04:32 · 9 answers · asked by tobi 1 in Astronomy & Space

If Not..What Is It In??(Like Can I Buy It From The Store??)

2007-11-26 20:57:36 · 5 answers · asked by The Don 1 in Chemistry

Why do astronomers and scientists go t great lengths to name every moon of every planet in our Solar System,and every star in the heavens,yet what do they name ours?Oh yeah.THE moon and THE sun.Also why is our planet the only one with "THE"in front of it,as in THE Earth,but not THE Jupiter,or THE Saturn or THE Venus?Thats wot I want to know!!What do you think we should name our two heavenly neighbours?
EG:Solus and Luna?Jack and Victor?Wot?

2007-11-26 20:56:54 · 11 answers · asked by gerrytweedie 3 in Astronomy & Space

2007-11-26 20:56:51 · 10 answers · asked by mary grace 1 in Parapsychology

2007-11-26 20:54:11 · 10 answers · asked by cucumis_sativus 5 in Zoology

2007-11-26 20:51:37 · 11 answers · asked by mayank_jain05 2 in Mathematics

sorry for the annoying capital letter, i just copied and pasted.

i need to know the cost, i think my brother might need it. and my mother, possibly me and my father too.

2007-11-26 20:44:11 · 2 answers · asked by Anonymous in Medicine

How do i prove that both sides are equal of the given identity for the given vaules of the variable t.

tan^2t + 1 = sec^2 t

a) t= 3pie/4

b)t= -2pie/3

i seem to be doing something wrong... or maybe because its 3am :(..

2007-11-26 20:32:58 · 3 answers · asked by djlkshfhsdfsfffe 2 in Mathematics

2007-11-26 20:25:29 · 1 answers · asked by Cj 4 in Medicine

Will I die? I had sex by the way? Shall I take another 50 mg of Viagra to actuallu get a heart attack?

2007-11-26 20:25:04 · 4 answers · asked by guy2598us 2 in Medicine

science question

2007-11-26 20:23:19 · 3 answers · asked by Ifeanyi A 1 in Botany

with science and technology improving at such a pace do you see this or even the next generation entering the interior of the earth

2007-11-26 20:17:36 · 7 answers · asked by Pebble 4 in Astronomy & Space

including researchers’ plagiarizing others’ work, using other scientists’ methods to develop lucrative patents, or just plain fabricating data. How important an issue is this for society? What are the boundary lines of ethical scientific behavior? How should the scientific community or society “police” scientists? What punishments would be appropriate for violations of scientific ethics?

2007-11-26 20:17:19 · 2 answers · asked by Anonymous in Biology

A car with a mass of 1100 kg travels around a banked curve with a constant speed of 35 m/s (about 78 MPH). The radius of the curve is 40 m.

What is the magnitude of the horizontal component of the normal force that would be required to produce this centripetal acceleration in the absence of any friction?

2007-11-26 20:12:34 · 3 answers · asked by Nicky 1 in Physics

is this just bad luck i hope that things will eventually work out its been very tough on me im only 24 years old do you beleive things always work out as they should?

2007-11-26 20:06:29 · 1 answers · asked by Anonymous in Medicine

two paragraphs pls....... tnx!!!!!!!

2007-11-26 20:06:14 · 8 answers · asked by Ailyn F 1 in Biology

x4-1

2007-11-26 20:00:29 · 8 answers · asked by salllllly 2 in Mathematics

What is the effect of raising voltage when resistance is kept constant?
What is the effect of changing resistance when voltage is kept constant?

2007-11-26 19:54:29 · 4 answers · asked by checked.cherry 2 in Physics

Galvanizing, a process used to prevent corrosion, involves coating iron metal with a thin layer of zinc metal

1) Iron nails can be galvanized using an electrolytic process. The nails to be galvanized would be attached to the

A- anode
B- electrode at which anions react
C- electrode at which oxidation occurs
D- electrode at which reduction occurs

2) A galvanized nail was placed in copper(ll) sulphate solution. After a day, the blue color of the solution disappeared and copper metal was produced. The procedure was repeated with objects made of other metals. Similar results would not be predicted for

A-an uncoated iron nail
B-a chromium plated spoon
C-a nickel plated coin
D-a gold plated bracelet

Im not sure the answers for these 2 questions..

2007-11-26 19:44:52 · 2 answers · asked by Anonymous in Chemistry

what type of weather will she probably see with in the next few hours ?

2007-11-26 19:44:10 · 2 answers · asked by tommiejbrothers 1 in Weather

2007-11-26 19:42:01 · 21 answers · asked by Yash G 1 in Astronomy & Space

2007-11-26 19:37:13 · 8 answers · asked by Lornalyn 1 in Mathematics

Multiply:
(5√[2] + 3)(√[2] – 2√[3])

2007-11-26 19:30:06 · 3 answers · asked by Zoomer1 1 in Mathematics

2007-11-26 19:25:12 · 5 answers · asked by Anonymous in Mathematics