Saturday
April 19, 2014

Posts by Emma


Total # Posts: 1,040

biology
If an atom of sulfur (atomic number 16) were allowed to react with atoms of hydrogen (atomic number 1), which of the molecules below would be formed? a.S-H b.H-S-H c.H-S-H | H d.H | H-S-H | H e.H=S=H

Biology
How many grams of the molecule in the figure above would be required to make 1 L of a 0.5 M solution of the molecule? H O | || (looks like C=O on the vertical) H-C-C-O-H | H a.29 b.30 c.60 d.150 e.342

6th grade art
The Dove of Peace by Pablo Picasso 30 x 24 inches . . . is that right? I also need to know where the art peice is located today and when it was made.

Physical Science
The one that is fastest has more power, and as for the work, it depends on the mass of each person and the height of the flight of stairs.

6th grade art
What was the Philosophies of Picasso.

math 5th grade
All I do is type in google or look in a library book

Math
Triangle PQR is a 30-60-90 triangle with right angle Q and segment PQ as the longer leg. Find the possible coordinates of R if (2,6) and Q(2,-6).

Math
Ray AF bisects angle DAB, Ray AE bisects angle DAF, and ray AD bisects angle CAF. Draw a picture that represents this situation. (I drew a picture but I still do not understand.) If the measure of angle DAB=x, find the measure of angle BAC. Answer choices: 3x over 4 , 6x, or 3...

physics
How much does a 600 N spaceship weigh on the moon if the moon's gravity is 33% of Earth's?

science
the amount of matter in an object.

Biology
When milk is present, the lactose repressor binds to the lac operon. Is this true or false? I think it is false.....?

Math
This site is great

AP Chemistry
what does pv/nRT tell you?

8th grade home economics
make it all over again x

English
Sorry if it seems so sad , the ending is a LOT happier

English
This is just the opening

English
I wrote this 2 years ok - please could you critique it A tale of dishonesty Our story takes place in Zakinthos – a place in Greece- long ago. It is all about the Princess of that fine land. Her name was Maria and she was sick of palace life. She stayed there as her love,...

7 grade math
I need help on this one question please help me

ict
ive looked on the sites everyone has kindly helped with the ict homework but i`m stuck on the definition of groups on the internet . thankyou so much

pre calculus
Yes,what do you do at that point? then you have the height as 4, but where does the 15 come in?

Science
If you eat more than 5 advils, what's the harm?

math
two puppies are chosen at random from a box at the mall. what is the probability of these outcomes 1)2;a tail then a head

math: percent and fractions
When writing a percent as a decimal,why do you move the decimal point 2places

math: percent and fractions
When writing a percent as a decimal,why do you move the decimal point 2places

math: percent and fractions
If 6eggs in 50% of an egg crate how many eggs are in the whole

math: percent and fractions
If 6eggs in 50% of an egg crate how many eggs are in the whole

math: percent and fractions
40% of jennies friends play kickball on weekends,what fraction of her friends don't play kickball

math: percent and fractions
40% of jennies friends play kickball on weekends,what fraction of her friends don't play kickball

solar systems
if the earth rotated every 16 hours how would this affect solar eclipses, the phases of the moon and our tides

math
this is tha question a television series consits of 8 programes, each 3 over 4of an hour. how many 3hour tapes would be required to tape the series please tell me how you work it out

physical science
which one of the following frequencies of a wave in the air can be heard as an audible sound by the human ear? A.0.10Hz B 10 Hz C. 1,000 Hz D. 100,000Hz

science
who is the primminster of Canada

English
what rhetorical devices does david suzuki use in his opening sentence, and how does it begin to introduce his subject?

math
if you have x squared x and then a blank what is tha value of that blank x2+x+b what is b perfect square of a trinomial?

Chemistry
What is the Lewis structure for IF4-?

Math
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Social Studies
What's the capital of Falkland?

math
Antonio said, "To solve 506-288, I can think of 5 hundreds as 50 tens." How might this help him subtract?

Physics (again, sorry)
A swimmer maintains a speed of 0.15 m/s relative to the water when swimming directly toward the opposite shore of a straight river with a current that flows at 0.75 m/s. (a) How far downstream is the swimmer carried in 1.5 minutes? (b) What is the velocity of the swimmer relat...

Physics
Sorry I wasted your time! I understand it now!

Physics
A small plane takes off with a constant speed of 130 km/h at an angle of 37 degrees. In 3.00 s, how high is the plane and what horizontal distance has it traveled from the lift-off point. I know I should convert 130km/h into meters per second, but after that I am stuck. Can yo...

history
Research it then.

Grammar
This is a TV Show though

Grammar
How do you write tv shows? For example: Some high school students have known that they want to become doctors ever since they picked up their first toy stethoscope or watched their first episode of Grey's Anatomy. How do I write Grey's Anatomy? Italicize or quotes? Tha...

spelling
My teacher wanted me to tell the class what Honolulu meant and Hawaii meant. I really had no idea want they ment, so when I got home I went on the computer to try to figure out the qestion. As I went on the computer I searched really hard but I could not find the answere! Of c...

math
The area of a rectangular field is 12,750 square yards. The width is 150 feet. What is the length of the field in yards.

math
19

Lunch
What should i take for lunch tomorro? i get hungry lots

science
Why do 6-ounce boxing gloves hit harder than with 16-ounce gloves?

science
why is a punch more foreful with a bare fist than with a boxing glove?

science
Which has the greater momentum when they move at the same speed- an automobile or a skateboard? Which requires the greatest stopping force?

science
If you throw an egg against a wall, the egg will break. But if you throw it at the same speed into a sagging sheer, it may not break. Why?

science
When rollerblading,why is a fall less harmful on a wooden floor than on a concrete floor that has less give?Explain in terms of impulse and momentum.

Algebra-please check my work
check my answers please. Use the Intermediate Value Theorem to determine whether the polynomial function has a real zero between the given integers. f(x) = 2x3 + 10x2 - 8x - 5; between 1 and 2 -I got: f(1)=1 and f(2)=35;no Determine the maximum possible number of turning point...

spainsh
i need to find spainsh words begining with all the letters of the spainsh alaphbet. i can't find any for k, x, z or w

Social Studies
need inside map of La Monte school r 5

Social Studies
need map of La Monte school

Physic
what type of materials do people use as ohmic conductors? thanks.

economics- opportunity cost
what does thinking at the margin help compare

Pysics Word Problem
4. An automobile is traveling at 30 km/hr. It accelerates at 3 m/s2 until it has covered 100 meters.. What is its new velocity? I asked my teacher on what formula I should use and said I should use this one: V^2= Vo^2+2ax (V^2 is the velocit, Vo is the initial velocity, a is a...

Physics Word Problem
4. An automobile is traveling at 30 km/hr. It accelerates at 3 m/s2 until it has covered 100 meters.. What is its new velocity? I asked my teacher on what formula I should use and said I should use this one: V^2= Vo^2+2ax (V^2 is the velocit, Vo is the initial velocity, a is a...

Physics
Could you please check my answers and units.Also, help me with 3 and 4, I dont quite understand them. Thanxs! 1. An automobile starts from rest and accelerates at 3m/s2 for 4 seconds. How fast is it going after acceleration? -I got 12 m/s 3. At time = 0 an automobile already t...

Physics
I am still not understanding. Like for number 3, this is as far as I got 30km/36000000. Then for number 4, would it be similar as to number 3? Also, did I get number 1 correct?

Physics
Could you please check my answers and units. Thanxs! 1. An automobile starts from rest and accelerates at 3m/s2 for 4 seconds. How fast is it going after acceleration? -I got 12 m/s 3. At time = 0 an automobile already traveling at 30 km/hr. accelerates at 3m/s2 for 2 seconds....

Science
I have some equations that I would like checked. Thanxs! 1. An automobile starts from rest and accelerates at 3m/s2 for 4 seconds. How fast is it going after acceleration? 3m/s^2 / 4 = .75 m/s 2. If an automobile travels at 30 km/hr. for 2 hours, how far does it go? d=(30 km/h...

maths
how do i solve this equation? 2/(x+1)=1/(x-1) - (1/(2x-1)) thx Get a common denominator (x+1)(x-1)(2x-1) then, each term, multipy it out. Gather terms, solve.

maths
how do i solve this equation? 21(X-(1/7))^2= 3/7 thx Divide both sides by 21 Take the square root of both sides. Rewrite it as x - (1/7)= sqrt [(1/21)*(3/7)] = sqrt[(1/7)*(1/3)(1/7)] = (1/7) sqrt(1/3) x = (1/7)[1 + sqrt(1/3)] tahnks x=(2)/(7),0

maths
how do i factorise this?: p^2+2p+1-t^2 thx. p^2 + 2p + 1 - t^2 = (p+1)^2 - t^2 This is the difference of two squares, so it can be rewritten =(p+1+t)(p+1-t)

Maths
solve the following pair of simultaneous equation: (x/a)+(y/b)=1 (x/b)+(y/a)=1 can someone help please?i have no idea how to solve it =( x/(ab) + y/b^2 = 1/b x/(ab) + y/a^2 = 1/a Subtract one from the other y(1/b^2 - 1/a^2) = 1/b - 1/a y(1/b + 1/a)(1/b - 1/a) = (1/b - 1/a) Div...

maths
each of the students in a class writes a dirrerent 2 digit number on the whiteboard. the teacher claims that no matter what the students write, there will be at least three numbers on the whiteboard whose digits have the same sum. what is the smallest number of students in the...

ACCOUNTING
#1 chin company incurred direct materials costs of $300,000 during the year. manufacturing overhead rate is 70%. how much are chin company total manufacturing costs for the year?

maths
five bales of hay are weighted two at a time in all possible combinations. the weights, in kilogrames, are: 110,12,113,114,115,116,117,118,120 and 121 what is the weight, in kilograms, of the heaviest bale? can someone please show me how to do this question?thx. Something is m...

physics
a gardener pushes a wheelbarrow. according to Newton's third law the barrow's reaction force on the gardener is the exact opposite of her force on the barrow. a bystander concludes the gardener and barrow will not move because they push equally against each other. how ...

physics
why are you more likely to have an accident on your bicycle if you are riding it on a gravel or wet pathway?how do i explain this using newton's law(s)? thanks consider newtons first law. Then, consider friction on the tire on gravel, wet vs dry pavement. isn't it newt...

Physics
when you watch a cricket player catch the cricket ball, you will notice that he allows his hands to trace the path of the ball as it reaches him what is the physics principles behind this? and baseball catching is different, as the catcher moves towards the ball often with his...

Physics
In the game of netball, players often move quickly and then come to a sudden stop. how does the abrupt nature of the game relate of the knee injuries netball players frequently suffer? thanks IT sesms to me that abrupt stopping (the feet stop first, and then the knee ligaments...

Cannabis
What are the reasons for legalising cannabis? One of the most popular arguments centers around medical purposes, even if for no other uses. http://www.drugwarfacts.org/medicalm.htm http://news.bbc.co.uk/1/hi/uk/1869897.stm (Broken Link Removed) Of course, there are arguments a...

math
write 64 as a product of 2's what do i do??? factor 64 into product of twos. 2*2*2=8, that ought to get you started.

math
what does "write 81 as a product of 3's" mean? what do i do? 3*3=9. That ought to get you started.

math
what does "write 81 as a product of 3's" mean? what do i do? 3 to the 4th power, which can be written 3^4 or 3x3x3x3, equals 81.

physics
In late 2001, steve Fossett tried to fly a balloon nonstop around the world . why on his attempted circumnavigation of the globe did Steve attempted to travel at an altitude of approximately 10000 m? That is a typical stratosphere flight altitude, where the pilot can usually h...

physics
in Melbourne there used to be a huge shopping centre called "diamaru" built around an old "shot tower". hot lead globules were poured from the top of the tower which fell into a large pool of water at the foot of the tower. in this way spherical lead shot w...

child care
why is it important to choose appropriate play provision for a child? (please help i am very stuck and my assigment is due in tomorrow) Young children learn by playing. They develop large and small motor skills, intellectual knowledge, social adaptation, and information about ...

child care
how does poverty affect the growth and develpment to children Please try some reading here: http://www.google.com/search?as_q=children+poverty&hl=en&num=10&btnG=Google+Search&as_epq=&as_oq=&as_eq=&lr=&as_ft=i&as_filetype=&as_qdr=all&as_nlo=&as_nhi=&as_occt=title&as_dt=i&as_sit...

spanish
I have to fill in the gap with an adjective and i am really stuck on these questions: 1)Es........asomarse a la ventanilla 2)Carmen está...... le duele la cabeza 3) En la mano ......... llevo dinero, y en la no llevo nada. 4)Qué olor! El pescado no esta Pleas hel...

social studies
What are some problems or controversies regarding the use of the mineral silver? Check this article for the many uses of silver, including in alternative medicine. http://en.wikipedia.org/wiki/Silver#Folklore_and_mass_culture

social studies
How is silver harvested in Australia? Silver is not "harvested." It's "mined." http://www.google.com/search?q=australia+mining+silver&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA

social studies
Who manages the natural resources of Australia? http://www.google.com/search?q=australia+manager+natural+resources&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA =)

maths(urgent)thanks.
a parabola with turning point at (1,-2) and passing through the origin.find the equation of this parabola. how do i do this? can someone please show me how to solve it step by step?thanks! You know that at x = 0 the function is zero. Because the turning point is at x = 1 must ...

maths help needed!(urgent)
find the equation of the tangent to y=x-(a^3/x^2) at the point (a,0) how to i work this out??can someone please show me how to do it step by step?thanks!!! Take the dervative of y y= x- a^3 x^-2 y'=1+2a^3/x^3 so the equation for the tangent is y= mx + b where m is y' a...

Math again
Rearrange to give d in terms of e: (3d-7)/(4+5d) = e I got 3d - 5de = 4e + 7 but where do I go from there? Thanks :) 1st you must Multiply the polynomial. Please try the tutorial at the following site: http://www.webmath.com/polymult.html

Maaaath
6/x + 6/x-5 = 1 I got to x^2 -17x +5 = 0 But I have no idea if that is right? How do I find the answer? Thanks 6/x 6/x-5 =1 multiply both sides by x x(6/x +6/x-5)= (1) x The denominator x will cancel giving: 6 + 6 --- = x -5 Now -5 into 6 = -1.2 so 6 -1.2= x x= 4.8

chemistry
which of the following compounds contains the lowest percentage by mass of nitrogen? 1) NH4NO3 2) (NH4)2 SO4 3) NaNO3 4) NH3 can someone please help me??what method should i use?how do i do this? Find the molar mass of each compound by adding the molar masses of every atom (in...

chemistry
liquids such as ethanol have a greater vapour pressure than water for any given temperature. comment on the strength of the intermolecular forces in ethanol compared to water.

maths
a ball is dropped from a height of 40cm onto a horizontal surface and bounces in a vertical line until it eventually stops on the surface. the ball bounces in such a way that it loses ten percent of its height for each bounce and will continue to do this until it comes to rest...

differentiation
by determining : lim f(x+h)-f(x) h->0 --------------- h show that if f(x)=2x^2+2 then dy/dx=4x. i figured out that f'(x) is 4x...but i am confused about what to do next...someone help? "i figured out that f'(x) is 4x..." That's the answer! dy/dx is jus...

function
consider the function g(x)=x^3+5x^2-4x+4.determine: 1)g(37) 2)the value of x between zero and a hundred such that g(x)=145456 how do i do this? 1) put in 37 for x, and compute. 2) put in 145456 in for g(x), and solve for x. for the first one, just substitute 37 for x and evalu...

maths please check
a yacht is sailing at a speed of 12 knots due south in calm water. if the tacht encounters a current of 4 knots from bearing 040 degrees: determine the resultant speed and direction of the yacht. here is my answers: 15.28 knots from bearing 9.69 degrees.am i right? thanks. Tha...

maths
how do i find out the the equation of the line of symmetry for f(x)=ax^2+bx+c ? please explain it do me thanks! The line of symmetry runs through the vertex. so the x of the vertex is -b/(2a) and the equation of the line of symmetry is x = -b/(2a) e.g. for f(x) = 2x^2 - 12x + ...

parabolas
how do i find the equaion of the following parabolas? 1)intercepts at (2,0),(8,0) and (0,48) 2)turning point at (1,-2) and passing through the origin. can someone please teach me how to do this??thanks! The first: Write you standard equation of a parabola (it has two x interce...

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