Questions Asked on November 3, 2007

Hello, I was wondering how to explain the potential energy in a Ferris wheel, and if there were any reputable (aka not something
1. 1 answer
2. asked by Physics_For_Life_Fo_Shizzle
3. 562 views
I'm writing an essay about charity (which means "In its widest and highest sense, charity includes love of God as well as love
1. 1 answer
2. asked by Anonymous
3. 514 views
regarding the term nucleus using the follwoing wordssize ?? density ?? charge - I put positive location - I put the core of the
1. 1 answer
2. asked by bella
3. 452 views
The question list each element and the numebr of atomsMg(OH)2 Mg = magnesium What does OH with brackets aorund it mean and then
1. 4 answers
2. asked by sam
3. 844 views
why have he brackets around the (OH)2and not just OH2 it ask to lsit each element and the number of atoms present.
1. 3 answers
2. asked by sam
3. 425 views
A 1.0 kg metal head of a geology hammer strikes a solid rock with a velocity of 5.0 m/s. Assuming all the energy is retained by
1. 4 answers
2. asked by Sarah
3. 4,526 views
one example has Cl2 ( that is an L)the other has (OH)2 I still do not understand the difference if it has brackets or does not
1. 1 answer
2. asked by sam
3. 522 views
if you want to get rid of ammonium chloride chmically what would you react with it and/or dissolve it in?
1. 1 answer
2. asked by lois
3. 952 views
describe the states role and influence has on curriculum
1. 3 answers
2. asked by Lisa
3. 1,018 views
an atom is the smallest piece of matterwhich model does this describe Democrtius dalton Rutherford Thompson Bohr Wave Model
1. 1 answer
2. asked by sam
3. 655 views
Drwls, would please explain more? I'm not getting this.Thanks
1. 1 answer
2. asked by Sarah
3. 424 views
I choose these 3 as daltonatoms of same element are exactly alike atoms are invinsible atoms are smallest piece of matter
1. 1 answer
2. asked by sam
3. 598 views
I was researching amusement park rides for a recent project (from this site I have noticed that many others are in the same boat
1. 1 answer
2. asked by Nessa
3. 594 views
Are these correct for DemocritiusHelp so confused - I read site and still trying to figure out. atoms of same element are
1. 1 answer
2. asked by sam
3. 527 views
in an atom electrons move in definite orbits around the nucleus much like planets cirlce the sun.who said this - I think Bohr
1. 3 answers
2. asked by sam
3. 1,237 views
Can someone explain this to me.Element D has 6 protons and 7 neutrons Element F has 7 protons and 7 nuetrons are the pair
1. 3 answers
2. asked by liz
3. 2,324 views
an atom is made of a positively charged nucleus surrounded by a large region in whci hscientists can predict where an electron
1. 1 answer
2. asked by sam
3. 491 views
I think I might have gotten htese two incorrectatoms are small ahrd particles - I put Democritius An atom is the smallest peice
1. 1 answer
2. asked by sam
3. 886 views
How many grams (to the nearest 0.01 g) of NH4Cl (Mm = 53.49 g/mol) must be added to 700. mL of 1.294-M solution of NH3 in order
1. 1 answer
2. asked by ashleigh
3. 999 views
An atom is made of positively charged pudding like material through whic hnegatively cahrged particels are scatteredI put
1. 1 answer
2. asked by sam
3. 932 views
Thanks got through all but oneElement P has an atomic number of 92 and atomic mass of 238. Element s has 92 protons and 143
1. 1 answer
2. asked by liz
3. 895 views
A snowball is launched horizontally from the top of a building at v = 15 m/s. If it lands d = 44.5 meters from the bottom, how
1. 1 answer
2. asked by Lindsay
3. 1,386 views
I thought i was done but I am confused on these two.1. In a natom electrons are located in energy levels that are a certain
1. 1 answer
2. asked by sam
3. 998 views
rutherford =an atom is mostly empty space with a dense positively charged nucleus in the center do you agree
1. 1 answer
2. asked by sam
3. 684 views
A 3700 kg statue is placed on top of a cylindrical concrete (Y = 2.3 1010 N/m2) stand. The stand has a cross-sectional area of
1. 1 answer
2. asked by fred
3. 871 views
Two metal beams are joined together by four rivets, as the drawing indicates. Each rivet has a radius of 5.0 10-3 m and is to be
1. 2 answers
2. asked by joe
3. 2,190 views
At what depth beneath the surface of a lake is the absolute pressure 2 times the atmospheric pressure of 1.01 105 Pa that acts
1. 1 answer
2. asked by pete
3. 1,382 views
do you know where I can find an actual diagram/drawing of a structure of an atomI need to make one for helium
1. 1 answer
2. asked by sam
3. 437 views
I have read over 20 sites and I still cant figure this one out - in an atom electrons are located in energy levels that are a
1. 1 answer
2. asked by sam
3. 468 views
the question ask if charcoal has a luster - and is maleable.I know it is not maleable - but does it have a luster - I am
1. 1 answer
2. asked by liz
3. 494 views
is a property of metals luster
1. 1 answer
2. asked by liz
3. 441 views
a family of elements is the same as a group. The word groud needs to be replaced with the correct word????
1. 1 answer
2. asked by liz
3. 494 views
Hi, would anyone be willing to help with this. Thanks :)2. Find the following values: a) An intial $500 compounded for 10 years
1. 2 answers
2. asked by perry
3. 1,474 views
HI, could anyone help with this please. :)2. Find the following values: a) An intial $500 compounded for 10 years at 6 percent
1. 1 answer
2. asked by perry
3. 833 views
[Co(NH3)2(en)2]^+3what is the A)coordination no. B)no. of ligands C)Oxidation state of Co
1. 3 answers
2. asked by Sam
3. 2,603 views
Would "D" be the best answer for thisquestion? Which one of the following statements is NOT valid about the presence of a
1. 1 answer
2. asked by Anonymous
3. 1,303 views
Hallo, my name is Joshua.I'm currently doing my matric in south africa, which is most unfortunate, because south africa doesn't
1. 7 answers
2. asked by Joshua
3. 1,260 views
how does the human reprodutive system work?
1. 1 answer
2. asked by freddy
3. 403 views
The dose for an incremental lifetime cancer risk of 10-6(a) Increases as the estimated cancer slope factor increases (b)
1. 1 answer
2. asked by Thano
3. 682 views
David Hassenzahl discusses the relative risks of eating peanut butter contaminated with aflatoxin and apple juice contaminated
1. 3 answers
2. asked by Thano
3. 599 views
I need help translating the following into japanese.-Clan of the Shadow. -Village of the Shadow. -Hidden Village of the Shadow.
1. 2 answers
2. asked by Joshua
3. 724 views
What are the advantages and disadvantages of animal studies and epidemiological studies for establishing dose-response
1. 2 answers
2. asked by Thano
3. 583 views
Part 1: Suppose that the number of new homes built, H, in a city over a period of time, t, is graphed on a rectangular
1. 4 answers
2. asked by Vision/Help!
3. 1,179 views
a family of elements is the same as a group.is this or should it be a family of elements is the same as a column
1. 1 answer
2. asked by liz
3. 521 views
I need a function rule for the following:X Y -2 -2 0 1 1 3
1. 3 answers
2. asked by Mary
3. 418 views
is this correct if not we are to replace the word familieselements that have the properties of both metals and non-metals are
1. 2 answers
2. asked by liz
3. 548 views
When 2.47 g of chromium is reacted with an excess of sulphur, the compound Cr2S3 results. Treating the Cr2S3 so formed with
1. 1 answer
2. asked by Matt
3. 532 views
Please Explain your reasoningPart 1: Suppose that the number of new homes built, H, in a city over a period of time, t, is
1. 1 answer
2. asked by Vision/Help!
3. 634 views
1. which one of the 4 keeps electrons in orbit around the nucleus?electromagnetic force weak force strong force gravity 2. which
1. 2 answers
2. asked by liz
3. 654 views
can you help me with the first two - I have a chart of 20.Substance O - check any appropriate element - compound -
1. 1 answer
2. asked by liz
3. 507 views
How do I analyze a HPLC result?The lab tech injected the sample into the machine and I have the result paper for the sample
1. 0 answers
2. asked by ~christina~
3. 510 views
I have to choose one as the greatest of the 4 forces.gravity - weakest weak force - no so it would have to be strong force or
1. 2 answers
2. asked by liz
3. 625 views
Your local bank made a mistake on your printed checks. Additionally,the bank charged you for the checks, even though the order
1. 2 answers
2. asked by Anonymous
3. 692 views
Natalie is making a tablecloth for a circular table 3 feet in diameter. The finished tablecloth needs to hang down 5 inches over
1. 4 answers
2. asked by Alicia
3. 1,326 views
Ohayo, Joshua.A few more things you "might" like! 1. http://members.aol.com/writejapan/ 2.
1. 1 answer
2. asked by SraJMcGin
3. 766 views
f(x)=3x+1 g(x)= -4h(x)=5x m(x)=x^2 What is m(x)/ h(x) ? What is f ^-1(x) ? What is h(h(x)) ?
1. 1 answer
2. asked by Allisen
3. 319 views
Mrs. Lewis plans to drive 900 miles to her vacation destination, driving an average 50 miles per hour. How many miles per hour
1. 3 answers
2. asked by Rose
3. 2,857 views
is this correct or incorrectnonmetal are elements that tend to gain electrons in chemical reactions.
1. 1 answer
2. asked by liz
3. 607 views
Factor 5x^2-13x-6I got (5x-3)(x-2) as the answer, but I know that is wrong. Can someone please explain this to me? Thank-you.
1. 1 answer
2. asked by Fanny
3. 535 views
Suppose that a small open economy begins to use credit cards, starting from monetary equilibrium, allowing households to hold
1. 0 answers
2. asked by Patrick
3. 1,044 views
which one opf the 4 forces opposes the electromagnetic force in the nucleus of an atom:strong force weak force gravity I thought
1. 2 answers
2. asked by liz
3. 1,064 views
What's the answer for x^2-2x+3 and 2x^2+9x+4?
1. 1 answer
2. asked by Justin
3. 411 views
which one is responsible for holding an atom togetherstrong force weak force electromagnetic gravity I answered both weak force
1. 2 answers
2. asked by liz
3. 674 views
Why does covering and refrigerating food help reduce spoilage from mould?
1. 1 answer
2. asked by Erica
3. 1,113 views
we have a whole list and I am confused and can someone help me with the first 2 as a reference to use.substance O substance O2
1. 1 answer
2. asked by liz
3. 1,231 views
O = oxygeno2 = ??? it ask for us to name the substance.
1. 1 answer
2. asked by liz
3. 464 views
which one opf the 4 forces opposes the electromagnetic force in the nucleus of an atom:strong force weak force gravity I thought
1. 1 answer
2. asked by liz
3. 540 views
the greatest of the 4 forces would be strong force not electromagnetic force - I am a little confused from the reading
1. 1 answer
2. asked by liz
3. 436 views
Most easily observed in the behavior of large objectselectromagnetic strong force gravity weak force I answered electromagnetic
1. 1 answer
2. asked by liz
3. 612 views
is AL ( aluminium)an element compound formula atom molecule
1. 1 answer
2. asked by liz
3. 545 views
How do I find the domain and range of a function?
1. 1 answer
2. asked by Allisen
3. 559 views
Why are twin studies valuable in behavioral genetics research?What does the research say about the effects of environment on IQ
1. 2 answers
2. asked by Christian
3. 1,665 views
Dunbar, South Africaidentify at least two serious environmental problems, such as soil degradation, air or water pollution,
1. 1 answer
2. asked by Daisy
3. 646 views
Compare and contrast sedimentary rocks that have a granular texture with sedimentary rocks that have a nongranular texture.
1. 5 answers
2. asked by Jenny
3. 1,490 views
I have this formula z=1/x (which is the formula for conductance)My x values are: 98.3 ohms, 967 ohms, and 545 ohms. What would
1. 1 answer
2. asked by Soly
3. 517 views
Compare and contrast sedimentary rocks that have a granular texture with sedimentary rocks that have a nongranular texture.I
1. 0 answers
2. asked by Jenny
3. 623 views
Please help! I need a case of scientific fraud where the scientist was working alone and unwilling to cooperate/get reviewed by
1. 1 answer
2. asked by Matt
3. 452 views
The hand made snuffbox industry is composed of 100 identical firms, each having short-run total costs given bySTC=0.5q^2+10q+5
1. 1 answer
2. asked by jennifer
3. 1,840 views
What is the substance name for NH3
1. 1 answer
2. asked by liz
3. 628 views
How is an isotope and a nuetron related?how is an atomic number and a proton realted?
1. 1 answer
2. asked by liz
3. 423 views
How does one explain the raltionship between quark and subatomic particle
1. 3 answers
2. asked by sam
3. 467 views
Compare and contrast sedimentary rocks that have a granular texture with sedimentary rocks that have a nongranular texture.I
1. 0 answers
2. asked by Alex
3. 631 views
Use the value of the discriminant to determine the number and type of roots for the equation: (x^2+20=12x-16)1 real, irrational
1. 1 answer
2. asked by Chels
3. 1,983 views
My text saysC'est cette porte, l¨¤. = C'est la porte, l¨¤. I don't really get why does it have to change. Porte is feminine,
1. 2 answers
2. asked by Miche
3. 543 views
i an in forth grade and i have to do a book report.
1. 3 answers
2. asked by adrian rodriguez
3. 469 views
what are some inventions from the industrial revolution?
1. 2 answers
2. asked by sarah
3. 790 views
What is the de Broglie wavelength of an oxygen molecule, O2 traveling at 521 m/s? Is the wavelength much smaller or much larger
1. 14 answers
2. asked by Lauren
3. 4,563 views
What is the wavelength of a proton traveling at a speed of 6.21 km/s? What would be the region of the spectrum for
1. 3 answers
2. asked by Lauren
3. 1,567 views
A stone thrown horizontally from a height of 7.8 m hits the ground at a distance of 12.0 m. Calculate the speed of the ball as
1. 3 answers
2. asked by Lindsay
3. 887 views
Cn you help me with this question?Which would be the best answer for this question (B or D)? A normally developing child can
1. 2 answers
2. asked by Anonymous
3. 835 views
The space probe Pioneer 11 was launched April 5,1973, and reached Jupiter in December 1974 traveling a distance of 998 million
1. 9 answers
2. asked by Lauren
3. 1,051 views
I need to find detailed information on Charles Darwin, specifically, about his results and the RELIGIOUS PERSECUTION involved
1. 1 answer
2. asked by Matt
3. 598 views
what is the initial velocity (Vyo) of a projectile launched horizontally? why?i know that it is 0 m/s, but i don't know why/how
1. 1 answer
2. asked by beckii
3. 1,071 views
A CD rotates at 500 (revolutions per minute) while the last song is playing, and then spins down to zero angular speed in 2.60
1. 1 answer
2. asked by Christina
3. 1,913 views
List five natural resources you believe are essential for civilization. If htese natural resources become limited because man's
1. 3 answers
2. asked by Bonnie
3. 622 views
A container initially has 0.0186 M ammonia at a certain temperature. When the system reaches equilibrium the concentration of
1. 2 answers
2. asked by Dan
3. 927 views
What is the wavelength of the transition from n=4 to n=3 for Li2+? In what region of the spectrum does this emission occur? Li2+
1. 1 answer
2. asked by Lauren
3. 943 views
Tidal Energy.If we model 2 blades as thin uniform steel bars 15.0m long and .25m in diameter, at what rate (radians/second and
1. 7 answers
2. asked by Christina
3. 709 views
One mole of methane has a mass of 16.0 grams. 1000cm3 of methane have a mass of 0.174 g. What is the correct expression for
1. 1 answer
2. asked by Lucy
3. 580 views
The equilibrium constant for the reaction of bromine and chlorine to form bromine chloride under certain conditions is 4.7x10-2.
1. 1 answer
2. asked by Dan
3. 1,247 views

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