Posts by emma

Total # Posts: 1,793

math
What is the Surface area of a glass bead that has the diameter of 11m? Express your answer to the nearest square mm. A glass bead would be a sphere. So the formula for that is--> SA = 4ðr^2 = 4ð(5.5^2) = 380mm^2

math problem
When a concrete structure is built, an engineer often performs a slump test on the concrete to ensure that it is of suitable strength and consistency. The engineer fills a truncated cone with a bottom diameter 200mm, top diameter 100mm and height 300mm with concrete. The ...

health
what brings energy and oxygen into the body?

math
6r-3=15

math
7d+5=26

physics
A golfer takes three putts to get the ball into the hole. The first putt displaces the ball 15 ft north, the second 9.0 ft southeast, and the third 5.0 ft southwest. What displacement was needed to get the ball into the hole on the first putt?

phsics
so the magnitude will be the same and you have to add 180 degrees to the the original angle right..

phsics
I'm having some trouble with a question how do you find a vector that balances another one

english
Give 5 similaralities between spoken language and text/instant messaging

math
the length of a rectangle is 9in. greater than the width.the area 36in.2 find the dimensions

math
the length of a rectangle is 9in. greater than the width.the area 36in.2 find the dimensions

Algebra
you have to do long division i got x-9 as the answer

physics
An artillery shell is launched on a flat, horizontal field at an angle of α = 31.5° with respect to the horizontal and with an initial speed of v0 = 266 m/s. What is the horizontal distance covered by the shell after 9.44 s of flight?

physic
The velocity vector V1 has a magnitude of 3.0 m/s and is directed along the +x-axis. The velocity vector V2 has a magnitude of 2.0 m/s. The sum of the two is V3, so that V3 = V1+V2 true or false for each question The magnitude of V3 can be -3.0 m/s The x-component of V3 can be...

6th grade social studies
the culture of egypt and nubia began to mix when people and goods passed both egypt and nubia:)

chemistry
what happens when you cool biodiesel. petroleum-based diesel fuel, and vegetable oil?

Biology
Populations are frequently NOT in equilibrium due to selection or other evolutionary forces. Imagine a population of 100 individuals. Forty-nine of the individuals are homozygous dominant for beady-eye gene, 9 are heterozygous and 42 are homozygous recessive. NOTE: The ...

physics
The speed limit in a school zone is 38 km/h. A driver traveling at this speed sees a child run onto the road 16 m ahead of his car. He applies the brakes, and the car decelerates at a uniform rate of 8.5 m/s2. If the driver's reaction time is 0.55 s, What is the stopping ...

English
What is the proper name used when using improper words. ie rootin' tootin'?

math
"ThermoStar has been producing residential thermostats for over 50 years. Looking over the past 20 quarters (5 years) of the different product lines, the general manager has been trying to get a handle on sales, costs, and production, and has asked for your help. Your ...

Statistics
Car P(Sale) % Sold Per Sale/ Profit Per Sale VW Golf 10% 15% $1,000 Saab 10% 15% $2,000 BWM Z4 10% 20% $12,000 Skoda Octavia10% 10% $1,200 Lada Niva10% 40% $400 Sum 100% 2.1 What is the expected profit for a VW Golf? 2.2 What is the expected profit for a Saab? 2.3 What is the...

american government
there are five main principles that form the basis of rules that ensure our democratic government. discuss each and present an example that shows how our government is not obeying each principle

Chemistry
How were you able to get the 1.6?

Chemistry
Prepare a 0.0200 mM dye solution at low pH by dilution 0.40 ml of the stock 0.100 mM chemical X into the appropriate volume of 2.5 M HCl. What is the amount of HCL required for dilution, the final concentration of HCl in the solution, and the pH? I know there's the MV = MV...

english
what does being perfect mean?

Career Studies
Hi, I have to do a visual presentation on a current economic or social trend. I'm not allowed to use bristol board/posters or powerpoint/slideshows, because she wants us to be creative. What are some trends I could choose from, and what kind of presentation could I ...

chemistry
What is the purpose of removing all the precipitate from inside a beaker?

chemistry
What is the purpose of removing all the precipitate from inside a beaker?

Chemistry
What is the number of moles present in 24.0 mL of 0.500M solution of sodium chloride, NaCl? How many moles are there in 456 g of calcium fluoride, CaF2?

chem can u check answer please
I'm not ure that that is right... [H+] = -log(pH) however, we are given a pOH, not a pH. pH + pOH = 14 pH = 14 - pOH so 14 - 9.262 = pH pH = 4.738 [H+} = 10^-ph = 10^-4.738 [H+] = 1.8281 x 10^-5 M

calc
Three verticies of a parallelogram are D(2,1,3), E(-4,2,0) and F(6.-2,4). Find all possible locations of the fourth vertex.

Pre Algebra
Transversals?

7th grade
what is 1.4 to the 11th power

english
is this sentence clean she buyed some dounuts from the shop she boght some donuts from the shop.

math
3.75qt= qt c

english
does this sentence makes sens she flied over the mountaintop.

Chemistry
A battery is constructed based on the oxidation of magnesium and the reduction of Cu^2+. The initial concentrations of Mg^2+ and Cu^2+ are 1.2*10^-4M and 1.5M, respectively, in 1.0-L half-cells. The initial voltage of the battery is 2.83V with the standard voltage at 2.71V. ...

english
does this sentence make sesse. he ate a apple.

college economics
Suppose there are two goods. The demand for good 1 is q1=a-bp1+ep2 and the demand for good two is q2=a-bp2+ep1. a and b are strictly positive, |e|<b (1)Compute the optimal prices, and the Lerner index and inverse elasticity of demand for each good. (2)Now suppose the goods ...

economics
Suppose there are two goods. The demand for good 1 is q1=a-bp1+ep2 and the demand for good two is q2=a-bp2+ep1. a and b are strictly positive, |e|<b (1)Compute the optimal prices, and the Lerner index and inverse elasticity of demand for each good. (2)Now suppose the goods ...

Chemistry
A voltaic cell consists of a Pb /Pb^2+ half-cell and a Cu/Cu^2 half-cell at 298K. The initial concentrations of Pb^2+ and Cu^2 are 5.20×10−2 M and 1.40 M, respectively.

english
What changes have you seen in your lifetime with regard to people's attitude towards the environment?

CHEMISTRY
66 g 72.8%

Chemistry Dipole Moments
How do you tell which end of a polar bond is positive or negative? My book says that a molecule such as Hf has a center of positive charge a center of negative charge. But in S--O, how do you tell which end is positive, and which is negative.

trig
which of the following sets gives the x coordinates where the parabola y=x^2+4X-50 and the line y=7x-10 intersect when drawn in the coordinate plane

trig
which of the following sets gives the x coordinates where the parabola y=x^2+4X-50 and the line y=7x-10 intersect when drawn in the coordinate plane

Reading
Just gold eggs in a story that contain snakes, bees, and wolves.

Reading
Why would eggs containing terrible things, are so beautiful on the the outside and eggs containing beautiful things, are plain on the outside?

Reading
Who's point of view is it from, if it's not any of the character's point of view?

Reading
Why is magic important in folktales?

science
What is the storm on Jupiter?

Chemistry
it doesn't say :(. that's the problem word-for-word

Chemistry
.12M Lactic Acid (HC3H5O3, Ka=1.4x10^-4) is mixed with .10M NaC3H5O3 to form 1.00L solution. A. Calculate the pH of the solution after the addition of 50.0mL of 1.00M NaOH. B. Calculate the pH of the solution after the addition of 120.0mL of 1.00M NaOH.

math
X=10 so 10-8 would equal 2 and so y=2

7th grade
9.75 feet

teasers
i have streets but nopavemet i have cities but no bulidings i have rivers yet no water what am i

math
Which value of 'x' is the solution of the equation 2x/3 + x/6 = 5?

math
It takes Tammy 45 minutes to ride her bike 5 miles. At this rate, how long will it take her to ride 8 miles?

psy 210 HHHEEEEEELLLLPPPPP PLEASE!!!
hello, are u here

Muffins and Teeth in your Ears
Ear defenders are like ear muffs they are made of muffins which can help with helping you to stop you getting tooth in your ear drum (Fun Fact--- I did not just make that all up there really are teeth in your ear drums!)

physics
a basketball of mass 0.5 kg is dropped from restfrom a height of 1.34m.it rebounds to a height of 0.6m. how much mechanicalenergy was lost during the collision with the floor?

math
how do you solve 8-3x=the square root of 4xsquared+ the square root of 20 + 8

Math
If a diamond shape = 2/3 how do you draw 1/3, 1, 4/3, 2 thanks

Geometry
Hi, I don't have much time to turn this in. I think I got all the questions right, but I just want to be sure. I would appreciate some feedback! Thank you! 1. What is the formula for calculating the length of the diagonal of a right rectangular prism on the basis of the ...

Enlish or grammar
What is the tthe difference between General information and Specific information?

social studies
Actually my name is emma and sally is my friend were in the same class and we had that question for homework and she told me to go on the websit and read the answer. i thought i was thanking sally not Ms. Sue but now i know and im sorry.

social studies
Thank you! It helped alot!

physics
Two charged bodies exert a force of 0.245 N on each other. If they are moved so that they are one-fifth as far apart, what force is exerted?

12th grade
I have to write a evaluation on president Obamas speech on 1/27/10. THis speech is for Public speaking class. THis is what i have done. I will critically evaluate every aspect of the speech that the President made especially his Delivery, Audience, Movements, Eye Contact, ...

clothing and textiles
what is the term controlling/disposing of fullness?

History - Ming Dynasy
How and why did the rule of law develop in the Ming Dynasty?

chemistry
how do you get the percent of a solution that is 2.5 ml copper sulfate and 7.5 ml water?

Accounting
What is your margin tax rate________ and what is your average tax rate_________? During the year you earned $48,000 after deductions and exceptions and paid $8,188 in taxes. Tax rate___over______up to 10%_________0________8,350 15%_______8,350______33,950 25%_______33,...

Accounting
What is your margin tax rate________ and what is your average tax rate_________? During the year you earned $48,000 after deductions and exceptions and paid $8,188 in taxes. Tax rate over up to 10% 0 8,350 15% 8,350 33,950 25% 33,950 82,250 28% 82,250 171,550 33% 171,550 372,...

Introduction to College Planning
I have to survey several people about what they would do if their roommate falls ill. Do colleges have extra dorms you can go to if you want to avoid the sickness? If your roommate is sick, can he/she be sent off to an sick wing of shorts to spend the night so you don't ...

Chemistry
I need to know how to dilute a 1L IV bag of 0.45% NaCl with 3.5% NaCl water to make it a drinkable 0.9% NaCl

science
the flow of energy through a community is a ?

Language Art
The meaning of bulldogged determination means to be very determined.

physics
A 13 cm long animal tendon was found to stretch 3.8 mm by a force of 13.8 N. The tendon was approximately round with an average diameter of 7.0 mm. Calculate the elastic modulus of this tendon.

4th grade
What is 4 digit number that is less then 2,340

Symbolic Logic
I have to put the following arguments in standard form and wasn't sure if I was doing this correctly... 1. John didn't come home smiling, since if John got the job he came home smiling. But he didn't get the job. so I wrote: If John got the job, then he came home ...

Chemistry
Draw Lewis dot structures, including appropriate resonance forms, and assign formal charges to each of those structures, for the molecule urea, with chemical formula NH2CONH2. You should find at least 3 such structures, some of which will have formal charges which are nonzero...

Chemistry
Is the decomposition equation for copper sulphate hydrate (CuSO4.5H2O) as follows: CuSO4+5H2O? Thanks

3rd grade
yes,that is true because in addition the number only comes up once.

Economics
Considering supply and demand, what happens to each of the following things when the U.S. is under the recssion? a.) Full employment product output: b.) Price level for goods: It goes down until a certain price level at which consumers realize goods are cheap and start buying ...

Social Studies
How do you know that Sumerian society developed after the Stone Age???

Calculus
Sketch the solution curves for y'=xy How do I sketch this??? Where do I start?

Calculus
Sketch the solution curves for y'=xy How do I sketch this??? Where do I start?

biology
oh, I am very sorry, I promise this won't happen again, I am verry sorry Ms.Sue

biology
Usually, wikipedia works best, but if you have a texbook then it is even better.

biology
you can just post these on google, and you'll eventually come up with some searches, from which you can find your answers.

biology
here is the answer to your 2nd question Plant and animal cells are Eukaryotic.They have nuclei,therefore they are eukaryotic. Prokaryotes lack nuclei.

biology
here is the answer to your last question. Cells have different sizes because of how their cytoskeletons are arranged (action, microtubules, microfilaments)that act as a framework for the organelles of the cell to rest on cells are different shapes for their specific fuctions, ...

writing
as a noun this is what it defines:noun: lewd or lascivious woman

math - equivalent expression
I think the answer would be x=-6

socials
would the storming of the batille go under bastille

socials
thank you very much. Overall is everything good?

socials
Bastille: royal prison and fortress which got attacked by a great mob on July 14, 1789. Feudal: The social system that developed in Europe in the 8th century; vassals were protected by lords who they had to serve in war. Girondists: One of the most important clubs, whose ...

socials
look up these people or places and state who or what they are: Bastille: royal prison and fortress Corday: a Girondist who assassinated a leading Jacobin, Jean-Paul Marat Feudal: economic and social Girondists: One of the most important clubs, whose members came from an area ...

SOCIALS
Emilie an innocent girl just escaped from the clutches of the jacobin family, until she spots an old man, who she eventually gets to know is a baker, she thought that this was it, she was doomed because the baker would hand her over, but he doesn't do that, he and his wife...

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