Science & Mathematics - 25 October 2006

A small block is held in place against a rough wall by someone pushing on it with a force directed at 22° above the horizontal. The coefficients of static and kinetic friction between the box and wall are 0.4 and 0.3 respectively. The box slides down unless the applied force has magnitude 13 N. The mass of the box is

2006-10-25 23:54:26 · 2 answers · asked by 3ajeeba_q8 2 in Physics

2006-10-25 23:52:04 · 13 answers · asked by Steph :-) 3 in Astronomy & Space

2006-10-25 23:49:43 · 7 answers · asked by Anonymous in Engineering

Why do we as a society confuse our people by allowing our astronauts to refer to outer space as zero gravity, when it in fact is only a reduced Gravity state of existence.

As I see it, with all of the billions upon billions of dollars which we have spent in Astronomical Space research, we must now know for a fact that all matter attracts other particles with in space with respect to gravitational forces, therefore space is not zero gravity, even though it may feel as such to the astronauts with respect to their very primitive and basic observations.

It is only with respect to combined matter density of any object, and distance from each object in question in which less dense particle matter objects will observe reactive responses by the more dense particle matter objects.

Thus gravitational attraction is vacuum energy acceleration through particle matter which functions with direct respect to Universal linear expansion in all directions.

And Zero Gravity is extremely Rare and has never been observed.

2006-10-25 23:46:50 · 11 answers · asked by Thoughtfull 4 in Physics

a. Find the magnitude of the acceleration of the block
b. Find the coefficient of kinetic friciotn between the clock and the incline?
c. FInd the magnitude of the frictional force acting on the block?
d. Find speed of the block after it has slide 2.00m?

2006-10-25 23:34:45 · 1 answers · asked by lauren u 1 in Physics

jayesh_1232007@yahoo.co.in

2006-10-25 23:34:10 · 4 answers · asked by jayesh_1232007 1 in Physics

hhmm..
does anybody know what is the angle of the molecular geometry of sulphite?
<109,5 or <106?

2006-10-25 23:33:11 · 2 answers · asked by Anonymous in Chemistry

Reachs a speed of 7.0m/s^2 at the bottom of the hill
Coefficient of kinetic friction between sled + girl and hard icy snow 0.050, the total weight of the sled + girl = 645N.

2006-10-25 23:30:59 · 4 answers · asked by lauren u 1 in Physics

2006-10-25 23:26:18 · 7 answers · asked by pavan kumar NC 2 in Physics

CAn you tell me about inorganic and organic matter Pls. it's a reasearch.

2006-10-25 23:24:24 · 3 answers · asked by custard 2 in Chemistry

2006-10-25 23:20:09 · 10 answers · asked by jenkster 1 in Biology

2006-10-25 23:18:33 · 2 answers · asked by Dude 1 in Earth Sciences & Geology

a) combustion
b) photosynthesis
c) chemosynthesis
d0 oxidation

2006-10-25 23:17:46 · 2 answers · asked by Anonymous in Biology

can someone help me with this ASAP.. thank you..

2006-10-25 23:06:37 · 3 answers · asked by tannhauser 2 in Chemistry

how do i put this into ratios

first add 25ml then add 75ml and finaly add 20ml

2006-10-25 23:04:48 · 6 answers · asked by hello 1 in Mathematics

Help me!!!

2006-10-25 23:03:06 · 2 answers · asked by Bomer 1 in Physics

Malta has virtually no rain over the summer when their population grows by a million. In the winter, much of the rain quickly runs off the barren soil into the sea. Much of their drinking water is produced by expensive desalination plants. Does anyone know how the average water bill in Malta compares to the UK average? Are the locals subsidised by tourists?

2006-10-25 23:02:42 · 4 answers · asked by SteveNaive 3 in Geography

put in a mixing bole, 75ml water then add 50grams of flour and then add 30ml of vinila essence

2006-10-25 22:59:20 · 7 answers · asked by hello 1 in Mathematics

2006-10-25 22:57:35 · 11 answers · asked by The Instigator 5 in Other - Science

What is your interpretation of the above statement?
What is the argument in support of and in opposition to the statement?
How can we identify the role that genes play in our lives?

Thank you so much, hopefully my last question of the month xXxXx

2006-10-25 22:45:47 · 9 answers · asked by Star dust 4 in Medicine

Can some1 pls give me some help wid my homework. i need to say wat the social and economic advantages, disadvantages are of cloning human parts for transplant.
Also what ethical issues could this cause

thanks in advance

2006-10-25 22:45:33 · 3 answers · asked by Nick 3 in Biology

What examples show that this statement is true?
How can we resolve the conflict between benefit and harm?

Thank you so much, i can't wait till BMAT is over xXxXx

2006-10-25 22:44:17 · 2 answers · asked by Star dust 4 in Medicine

What different meanings could this statement have? What are the arguments for the genetic versus the environmental effect on our personality development?

I promise if you answer this one i won't annoy anyone after the first of november (yes after that BMAT will be over partay!!!)
Thanks so much xXxXx

2006-10-25 22:41:07 · 13 answers · asked by Star dust 4 in Medicine

2006-10-25 22:39:56 · 14 answers · asked by dylodonnell 1 in Astronomy & Space

2006-10-25 22:35:53 · 16 answers · asked by Anonymous in Biology

i really need hepl with this question can u plase help me

the formula of sodium sulphate is Na2 (thats ment to be a little 2) SO4 (also a little 4) and its formula mass is 142

A, how many moles of Na2 SO4 are there in 2.56 g?
B,what is the mass of 0.164 moles of Na2 SO4 ?
C,what mass of Na2 SO4 is neede to prepare a 250 cm3 solution of concentration 0.025 mol dm-3 ?
D, how many moles of Na2 SO4 are there in 35.5 cm3 of a 0.137 mol dm-3 solution of Na2 SO4 ?

2006-10-25 22:31:57 · 3 answers · asked by help 2 in Chemistry

2006-10-25 22:16:19 · 2 answers · asked by Anonymous in Biology

I want to build a model bridge with a span of approx 1 meter, It has to be able to support 1 kg of weight. Has anyone any ideas on design and materials to use. Its kinda an art project. Thanks

2006-10-25 22:10:51 · 1 answers · asked by survival_paul 4 in Engineering

A novice polot sets a plane's controls, thinking the plane will fly at 250 km/h to the north. If the wind blows at 75 km/h toward the southeast, what is the plane's resultant velocity?

2006-10-25 22:03:23 · 7 answers · asked by Some Guy 2 in Physics

2006-10-25 22:00:07 · 20 answers · asked by The Kop 1 in Astronomy & Space