Friday

July 25, 2014

July 25, 2014

Total # Posts: 1,110

**science**

How do organs and tissues work together to help write your name?

**Math with science**

thank you so much!!

**Math with science**

Radioactive iodine treatment is so successful at treating hyperthyroidism that it has virtually replaced thyroid surgery. To the nearest full day, determine how long it will take for 400 millicuries of I-131, which has a half-life of 8 days, to decay to 3.125 millicuries. 56 d...

**Algebra**

Thanks you were a great help

**Algebra**

An office building containing 96,000 square feet of space is to be made into apartments. There will be at most 15 one-bedroom units, each with 800 square feet of space. The remaining units, each with 1200 square feet of space, will have two bedrooms. Rent for each one-bedroom ...

**Reseach paper**

I too am just one of many people on here doing the same paper and so far I havnt been able to find much to help answer the questions and get this paper written. NO I dont want anyone to do my work for me but my goodness a little help would be nice. Good Luck to everyone trying...

**writing skills**

which one of the following sentences contains an unnecessary word? A.Why dont you leave before the crowd arrives B.The snake raised up its head and struck C.She left early, thoguh he told her not to. D.Rich was angry, but he concealed his feelings

**statics**

If a court acquits every defendant, they will never commit a Type I error. A) True B) False 2. The probability of rejecting a true null hypothesis increases as the sample size increases. A) True B) False 3. For a given level of significance, the critical value of Student's...

**chemistry**

so its 2 electrons?

**chemistry**

How many electrons are transferred in the reaction of hydrogen peroxide with iron (II) ion in acidic solution to form iron (III) ion and water?

**Literature poetry, part 1**

If this be error and upon me proved, I never writ, nor no man ever loved. These lines are an example of a/an a. quatrain b. octet c. couplet d. sestet

**theology**

How does the Book of Daniel present a spiritual message? What is the main purpose of this message?

**math**

From the foot of a building I have to look upwards at an angle of 22 degrees to sight the top of a tree. From the top of the building, 150m above ground level, I have to look down at an angle of 50 degrees below the horizontal to sigh the tree top. a.) How hight is the tree? b...

**math**

Two observation posts are 12km apart at A and B. From A, a third observation post C is located such that angle CAB is 42 degrees while CBA is 67 degrees. Find the distance of C from both A and B.

**math**

prove the following trigonometric identity: (cos x/(1+sinx))+tanx = secx

**world literature**

How do poets utilize literary devices and conventions to develop themes in their poetry? I don't understand how to read a poem so I understand what it is really saying either?

**chemistry**

Definitely C

**simple math**

i just wanted to know how many significant figures in the number 100

**trig**

Determine the height of a tree which casts a shadow of 13.7m when the sun is at an angle of 28 degrees.

**math**

find the constant term of the expansion of (3x²+(1/x))^8 I don't know where to start =\

**math**

Find the coefficient of x³ in the expansion of (2x+5)^6

**Math**

Use Pascal's triangle to expand (a+b)^6 and hence find the binomial expansion of: (x-3)^6

**Spelling/Analogy**

i think this site sukes i give it no stares in less you are as dum as dirt

**math**

what is probability

**astronomy**

yes this is explained much better thank you for your time

**astronomy**

my book tells me the answer is 49 AU. I am just not getting the calculation. Please help

**astronomy**

if a comet is 125 years from sun and has a perihelion distance of 1. AU..What is the aphelion distance? I formulated it this way, is this right? 125years^2/1.AU^3= 15,625

**science**

balance FeS2 + O2 < Fe2O3 + So2

**science**

how do you balance the equation below? Mg + O2 > MgO

**astronomy help please**

A planet is growing by accretion of material from the solar nebula. Suppose that as it grows, its density remains constant. Does the force of gravity at its surface increase, decrease, or stay the same? Why? Also, What would happen to the surface gravity as the radius of the p...

**thank you**

thank you

**Astronomy help**

If a comet has a perihelion distance of 1.AU and an orbital period of 125 Earth years.. What is the comet's aphelion? Cannot seem to find the correct calculation

**Astronomy**

Are you saying that as the radius of the planet doubled the surface gravity would double too and it is because of the answer you gave before

**can you explain what you are saying**

cannot understand your point

**Astronomy**

A planet is growing by accretion of material from the solar nebula. Suppose that as it grows, its density remains constant. Does the force of gravity at its surface increase, decrease, or stay the same? Why? Also, What would happen to the surface gravity as the radius of the p...

**Astronomy**

If a comet has a perihelion distance of 1.AU and an orbital period of 125 Earth years.. What is the comet's aphelion? Cannot seem to find the correct calculation

**Astronomy**

Describe in one sentence the rotations and revolutions of the planets.

**Astronomy**

How could you tell if a moon or planet did not form with the rest of the solar system bodies? How might it have gotten there then?

**Astronomy**

Do the rotations of the solar syatem bodies seem to indicate that most of them formed together at the same time in the same way, or seperately under different conditions?

**thanks**

thanks

**Astronomy**

In one sentence I need to describe the shapes of the orbits of the planets. The shape must be accounted for in a model of the solar system, and of the solar system formation. My answer would be that the shapes of the orbits are round. Yet this seems to obvious! Need help.. is ...

**Math**

i feel your hatred. veronica... i feel ya

**Astronomy**

How did the voyager mission change our preconception of Jupiter and its moons

**physical science**

are alkali metals or alkaline earth metals soft silver - white, shiny metals

**physical science**

flourine is a halogen is it also a non-metal

**science**

Never found in nature uncombined? Alkali metals Alkaline Earth Metals Boron Family Carbon Family Nitrogen Family Oxygen Family Halogen Family Noble Gases

**physical science**

do not noramlly react with other elements? Alkali metals Alkaline Earth Metals Boron Family Carbon Family Nitrogen Family Oxygen Family Halogen Family Noble Gases

**Physical science**

Never found in nature uncombined? Alkali metals Alkaline Earth Metals Boron Family Carbon Family Nitrogen Family Oxygen Family Halogen Family Noble Gases

**physical science**

what is transition metal number 24 a common solid halogen family 13 bears this name

**pre-algebra**

what is the answer for this equation? -4x+9x

**physical science**

The exact question how are the following terms related - subatomic particels and atomic mass unit. The heading on the page is review and reinforcement structure of an atom - the three main subtomic particles are the proton, the nuetron and the electron.

**physical science**

The exact question how are the following terms related - subatomic particels and atomic mass unit. The heading on hte apge is review adn reinforcement structure of an atom - the three main subtomic particles are teh proton, hte nuetron and hte electron.

**physical science**

what is a one sentence that describes how subtatomic particles and atomic mass unit are realted?

**13 colums science**

K S S S S S S J S S F S S S S S S S S S D S S R S S S S S S

**science**

The following is a periodic table below All the letters are in squares The S = an empty square 13 Colums in total Questions: 1. What pair of elements is in the same period? D and R 2. Which pair of elemetns is in hte same family? K and F 3. Which element has the smallest atomi...

**science Dr. Bob /Pursley**

this is the chart we were given S = empty square 13 columns Question which elemnts are classified as metals. K S S S S S J S S F S S S S S S S S S D S S R S S S S S S

**science -purlsey/DrBob**

If K is the single one would it still be a metal? see prior question for chart also if the question asks for metals does it mean transitional and metaloids

**science**

The following is a periodic table below All the letters are in squares The S = an empty square 13 Colums in total Questions: which elements would be classified as metals is it just D & R or other metals which would be J K S S S S S J S S F S S S S S S S S S D S S R S S S S S S

**science**

How does an electron relate to energy level? How does subatomic particles relate to atomic unit? The reviews ask for 1 to 2 sentences.

**science Dr Bob**

In reference to table you helped me with the last question is which elements would be classified as metals. Does this include just metals or metals and alltoids and other metals I answered D & R I have a huge test thanks so much.

**Physical science**

The question which elements would be classified as metals? Would this include: metals - other metals and metaloids. Does metaloids fall under hte category of metals - we are to look at the periodic table and list the metals - not sure if this inclds metaloids and other metals

**Phyiscal science test monday**

The following is a periodic table below All the letters are in squares The S = an empty square 13 Colums in total Questions: 1. Which pair of eleemtns has hte same number of valence electrons? clueless 2. What pair of elements is in the same period? D and R 3. Which pair of el...

**physical science**

How is an electron related to an electron cloud

**physical science**

How is a subatomic particle related to atomic mass unit How is an electron related to enrgy level. Our study guide asks 1 to 2 sentences

**physical science**

how is an electron related to atomic mass how is an isoptope related to mass number I truly do not understadn how they are realted any help

**physical science**

how is an electron related to atomic mass how is an isoptope related to mass number

**physical science**

how is subatomic particles related to atomic mass unit how is an electron related t oenergy level

**physical science**

How is an isotope and a nuetron related? how is an atomic number and a proton realted?

**physical science**

What is the substance name for NH3

**physical science**

is AL ( aluminium) an element compound formula atom molecule

**physical science**

Most easily observed in the behavior of large objects electromagnetic strong force gravity weak force I answered electromagnetic

**physical science**

the greatest of the 4 forces would be strong force not electromagnetic force - I am a little confused from the reading

**physical science**

which one opf the 4 forces opposes the electromagnetic force in the nucleus of an atom: strong force weak force gravity I thought it was stong force

**physical science**

O = oxygen o2 = ??? it ask for us to name the substance.

**physical science**

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 **these are both seperate lines** name = under the rest we check appropriate box element compound symbol formula atom molecule

**physical science**

which one is responsible for holding an atom together strong force weak force electromagnetic gravity I answered both weak force and strong force

**physical science**

which one opf the 4 forces opposes the electromagnetic force in the nucleus of an atom: strong force weak force gravity I thought it was stong force

**physical science**

is this correct or incorrect nonmetal are elements that tend to gain electrons in chemical reactions.

**phyiscal science**

which one opf the 4 forces opposes the electromagnetic force in the nucleus of an atom: strong force weak force gravity I thought it was stong force

**phyiscal science**

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 electromagnetic force

**phyiscal science**

can you help me with the first two - I have a chart of 20. Substance O - check any appropriate element - compound - symbol-formula - atom - molecule Substance O2 - check any appropriate element - compund - symbol-formula- atom - molecule

**physicalscience**

1. which one of the 4 keeps electrons in orbit around the nucleus? electromagnetic force weak force strong force gravity 2. which is the greatest of the 4 fources

**physical science**

is this correct if not we are to replace the word families elements that have the properties of both metals and non-metals are called families I think it is metaloids?

**physical science**

a family of elements is the same as a group. is this or should it be a family of elements is teh same as a column

**physical science**

a family of elements is the same as a group. The word groud needs to be replaced with the correct word????

**physical science**

is a property of metals luster

**physical science**

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 guessing no.

**physical science**

Thanks got thru all but one Element P has an atomic number of 92 and atomic mass of 238. Element s has 92 protons and 143 neutrons. atomic number and protons are the same would htese two elements be an isotope or different elements

**physical science**

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 isotopes or different elements

**Algebra**

?I was wondering if you could tell me

**math**

there are 3 dwrs

**math**

Low-voltage lighting is a popular feature of landscaping. Two pathways meet at 30 degrees to each other. One pathway has the lighting, and the first light is placed where the two paths meet. The distance between successive lights is 5m, and each has a range of effective illumi...

**Algebra**

please check my answers. thanxs! Solve the polynomial inequality and graph the solution set on a number line. Express the solution set in interval notation. x^2 - 6x + 5 > 0 -I got (-ininity,1) u (5, infinity) x^2 - 3x - 18 < 0 -I got (-infinity,-3) u (6, infinity) x^2 -...

**Inequality**

please check my answers. thanxs! Solve the polynomial inequality and graph the solution set on a number line. Express the solution set in interval notation. x^2 - 6x + 5 > 0 -I got (-ininity,1) u (5, infinity) x^2 - 3x - 18 < 0 -I got (-infinity,-3) u (6, infinity) x^2 -...

**Chemistry**

thank you!

**Chemistry**

1.What is the formula for finding percent water hydrates? 2. And what is molecular formula?

**science**

physical or chemical change 1. a water molecule gains enough energy to enter the vapor phase? 2. anti freeze is added to a car radiator to lower the freezing point. 3. a glowing splint placed in a test tube causes it to make a loud "pop"

**physical science**

can two or more elements be combined chemically to make a new element? Explain. My answer: No, it becomes a compound which is a substance combined of two or more elements chemically combined not sure if correct - I am doing the review and not sure of a few questions thanks

**physical science**

Does not settle on standing: I answered homogeneous mixture - solution and compound is this correct? Can seperate when allowed to stand alone I answered heterogenous mixture * choices solution, compund, heterogenous mixture and homogeneous mixture

**physical science**

does not settle on standing? homogeneous mixture, solution and compound is this correct? can seperate when allowed to stand? only heterogenous mixture.

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