# Posts by Stephanie

Total # Posts: 1,214

**Chemistry 1**

Does anyone know what websites are good to use for Chemical Reactions and balancing equation. I have a test tomorrow, and i need to really practice those. Thanks

**Algebra 2 Honors**

Right now in my class i am learning about sequences and series and im currtently suck on this problem. "A certain sequence is defined recursively by the t1=1 , t2=2, t2n=2t2n-2, t2n+1=3t2n-1. Find the first eight terms of the sequence." thanks for your help.

**CHemistry**

True/ False: The pH of a soln that is 0.20 M CH3COOH and 0.20 M CH3COONa should be higher than the pH of a 0.20 M CH3COOH soln Would it be true since CH3COOH and CH3COONa are both weak acids, and if you mix them together, it becomes more diluted, and hence should have a higher...

**social studies**

private and publis economics

**Algebra 2 Honors- Ellipses REAL ONE**

for my homework problem i have the equation: (x^2/16) + (y^2/1) = 1 I need to find out the center, the vertices, co- vertices and the Foci. I have trouble knowing how to find them, so if you can please explain them. Thank you.

**Algebra 2 Honors- Ellipses**

for my homework problem i have the equation: (x^2/16) + (y^2/4) = 1 I need to find out the center, the vertices, co- vertices and the Foci. I have trouble knowing how to find them, so if you can please explain them. Thank you.

**Pre Calc-decode matrix**

thanks

**Pre Calc-decode matrix**

help!-matrix size is 3x3 clues for the encoding matrix: 1. all entries are one digit and positive 2. a11, a12, a13 are all equal and prime, their sum is also prime 3.the sum of a11, a12, a13 is equal to a21 4. the sum of a22 and the opposite of a33 is zero. a22 is prime and ...

**math**

He has no property (HE HAS NO PROPER TEA!)

**Math**

i really have no idea!?!

**science**

the period when cell divide to create new cells is called?

**social studies**

withoutour two great political parties cutting across economic and geographic interest,democracy as we know it could never have been made to function.the author of this statement probably meant that;

**chemistry**

Woohoooo webworks!!

**Statistics**

What is a 95% confidence interval for mue, the population mean time the postal service employees have spent with the postal service? n=100 mean=7 S=2 years

**math-statistics**

18) Which of the following is the most significant result? A) P<.001 B) P<.005 C) P=.05 D) P>.05 Okay, I have the answer key and know the question is A, but I always thought that if the P value is greater than .05 than it IS considered significant and you can reject ...

**english**

I need help creating a crossword puzzle containing poetry terms. What do I do?

**Numerical & Proportional Reasoning**

the bloodhound has 4.0*10^9 scent receptors in its nose. a typical human has 1.2*10^7 scent receptors. how many time more scent receptors does a bloodhounds have than a human? round answer to the nearest whole number

**st hilda's**

where he and when he was born?

**government**

The court of federal claims

**Chemistry**

What is enthalpy in layman's terms?

**biology**

If a protein had 500 amino acids, how many nucleotides would there be?

**social studies**

How was the Acropolis a great environmental adaptation in Greece?

**physics**

A diver can change his rotational inertia by drawing his arms and legs close to his body in the tuck position. After he leaves the diving board (with some unknown angular velocity), he pulls himself into a ball as closely as possible and makes 2.16 complete rotations in 1.31 s...

**physics**

A figure skater is spinning at a rate of 1.7 rev/s with her arms outstretched. She then draws her arms in to her chest, reducing her rotational inertia to 62% of its original value. What is her new rate of rotation?

**physics**

A uniform disk with a mass of 800 g and radius 17.0 cm is rotating on frictionless bearings with an rotational speed of 18.0 Hz when Jill drops a 130 g clod of clay on a point 7.10 cm from the center of the disk, where it sticks. What is the new rotational speed of the disk?

**social studies**

who is a natural born citizen of this country

**MATH**

3x-8>10

**Economics**

Can someone please explain to me what "endogenous" and "exogenous" conditions affect the business cycle.

**english**

does anyone know what the book" the fugitive" is about?

**chemistry**

how do I know the ion value of elements on the production side of the equation when balancing with the electron transfer method?

**Social Studies**

I am doing a crossword puzzle. One of the questions was "The electoral college was developed because some of the founding fathers believed that too much democracy was a very ____thing. The answer is 9 letters long, and it has me completely stumped. Any idea where I could ...

**Stats**

is the answerposted for this?

**Psychology**

I don't believe the people on this site EVER help anyone. Everytime people ask questions, especially in the homework help, there's never really any help. just remarks like that.

**Physics**

Find the velocity after a stroller has traveled 6.32m.

**math**

begin with an 8 1/2 x 11 piece of paper. fold it 9accordion style to represent eighths and shad 5 of the 8 equal parts. Then fold and shade the paper to represent 1/3 of the 5/8. What is the multiplication problem being modeled? What is the solution?

**math**

? evaluate the expression: 3 to the 3rd power-(15-8)+ 4 x 5

**Physics**

No the answer is 707/3.

**physics**

A penny is dropped from the observation deck of the Empire State building (370 m above ground). With what velocity does it strike the ground? Ignore air resistance.

**physics**

Glenda drops a coin from ear level down a wishing well. The coin falls a distance of 14.80 m before it strikes the water. If the speed of sound is 343 m/s, how long after Glenda releases the coin will she hear a splash?

**physics**

A Nile cruise ship takes 21.7 h to go upstream from Luxor to Aswan, a distance of 208 km, and 19.4 h to make the return trip downstream. Assuming the ship's speed relative to the water is the same in both cases, calculate the speed of the current in the Nile.

**physics**

Two cars are driving toward each other on a straight, flat Kansas road. The Jeep Wrangler is traveling at 84 km/h north and the Ford Taurus is traveling at 43 km/h south, both measured relative to the road. What is the velocity of the Jeep relative to an observer in the Ford?

**physics**

An airplane lands and starts down the runway at a southwest velocity of 41 m/s. What constant acceleration allows it to come to a stop in 1.3 km?

**math**

HELP!!! How do I solve the following: 3h + 2 for h =10

**Physics**

I keep getting a negative answer for this...is that ok?

**Physics**

Ok that makes sense. But how do I come up with the distance below the climber?

**Physics**

A small first aid kit is dropped by a rock climber who is descending steadily at 1.3 m/s. After 2.5 s, what is the velocity of the first-aid kit, and how far is the kit below the climber? This problem seems like it should be easy, but I'm not sure which equation to use. I...

**Paralegal Today**

Assume that John submits ann offer to Lisa to purchase Lisa's home for $300,000. Lisa responds to John's offer with a counteroffer: she will sell John her home for $325,000. John then offers to purchase the home for $325,000 and Lisa accepts the offer. In each of these...

**Paralegal today**

What might result if an insurance applicant makes false statements in an insurance application? In this situation, will the policy be enforceable? Explain.

**Physics**

For part a, my book says the answer is 310 m. I'm still really confused on how they got this answer.

**Advanced Math**

Def: An interger "m" divides an integer "n" if there is an integer "q" such that n=mq. ?Suppose a, b, and c are integers such that a divides b and b divides c. Prove that a divides c.

**Social Studies**

What does Independent Invention mean?

**Math**

60

**Math**

9 divided by 66

**U.S. Government**

Sorry again, BUt i have a few more questions that I could not figure. 1. Give examples of which US culture or government has followed the classical republican model. 2. Give examples in which US culture or society has followed the natural rights model. 3. Which model is more ...

**Government**

In what ways were the founders influenced by the ideas of the natural rights philosophers? What proof can you show that the Founders were influenced by the natural rights philosophers?

**Physics - REPOST**

Sorry (impatient) and Thanks. So E=/F/ divide by /q/

**Physics - REPOST**

A styrofoam ball covered with a conducting paint has a mass of 5.0 x 10 ^-3 kg and has a charge of 4.0 microcoulombs. What electric field directed upward will balance the weight of the ball?

**Physics**

Sorry (impatient) and Thank you for your time. So is E=/F/ divide by /q/

**Physics - REPOST**

A styrofoam ball covered with a conducting paint has a mass of 5.0 x 10 ^-3 kg and has a charge of 4.0 microcoulombs. What electric field directed upward will balance the weight of the ball?

**Physics**

I would like logic on how to solve this problem. A styrofoam ball covered with a conducting paint has a mass of 5.0 x 10 ^-3 kg and has a charge of 4.0 microcoulombs. What electric field directed upward will balance the weight of the ball?

**math**

gordy has 187 cds.he wants to put them on shelves.each shelf holds 42 cds.how many shelves he be able to completely fill whit cds?

**fin**

The answer to question A. is $189,500

**physics**

The Space Shuttle astronauts use a massing chair to measure their mass. The chair is attached to a spring and is free to oscillate back and forth. The frequency of the oscillation is measured and that is used to calculate the total mass m attached to the spring. If the spring ...

**science(physics)**

can you help me??

**physics**

The Space Shuttle astronauts use a massing chair to measure their mass. The chair is attached to a spring and is free to oscillate back and forth. The frequency of the oscillation is measured and that is used to calculate the total mass m attached to the spring. If the spring ...

**Physics**

The acceleration of gravity on the moon is about 1.6 m/sec2. An experiment to test gravity compares the time it takes objects to reach a speed of 10 m/sec after being dropped from rest. How long does an object dropped on the moon have to fall compared to an object dropped on ...

**Art**

I choose a painting to write about and I am having the hardest time trying to see the form, color, space and much more. Is there anyone that knows this kind of stuff?

**Social Studies**

How did the headright system promot British migration to the new world?

**Writing**

That is a good way to start, you could also say, The one person who made a big impact in my life is Hill Harper, and then go on to say why. But what you said would work too.

**Math**

Find all positive values for k x^2 + 2x- k how do you figure this out factor it out and only use the positive answer

**Math**

Jerry earned $18,500 one year and then received a 10.5% raise. What is his new yearly salary? would this be the correct way to set this up and the correct answer? $18500*10.5=$20442.50 You got the correct answer, but didn't type the correct equation. Which tells me you did...

**Biology-homologous chromosomes**

homologous chromosomes are called?

**Chem 011**

I can not figure out how many mols are in 102grams of NH3? mols = grams/molar mass. mols NH3 = 102/17 = ??

**Chemistry**

Wow, Brandon! WOW!!

**physical science**

force and motion Do you have a question? Not knowing what your specific question or your age is, I searched Google under the key words "force motion" to get these possible sources: http://library.thinkquest.org/CR0215468/force_and_motion.htm http://classroom.jc-...

**Computer**

Give some examples where traffic analysis could jeopardize security. Describe situations where end-to-end encryption combined with link encryption would still allow enough traffic analysis to be dangerous. Since this is not my area of expertise, I searched Google under the key...

**Computer**

Suppose that a sender and receiver use asynchronous transmission and agree not to use stop elements. Could this work? If so, explain any necessary conditions.

**chemistry**

Question is: If you gain your iron from an iron citrate (Fe(C6H7O7)2) supplement, how many grams of iron citrate do you need to take to gain 8.88 mg of iron? I tried setting this problem up, but i don't think i did it right. can someone please tell me if i did it right or ...

**chemistry!!**

If someone could please help me figure out this problem and tell me how you did it, I would really appreciate the help!! Chaum drives a car 10,000 miles during the year and the car gets 22 miles/gallon. How many pounds of carbon dioxide in a year will Chaum produce? The ...

**chemistry**

If someone could figure this problem out and tell me how to do it, i would really appreciate the help! Bryson needs .003 mg of a cholesterol-lowering drug per pound per day. The drug should be taken 3 times a day. If capsules contain .010 mg of the drug, how many capsules ...

**math**

i need help with this homework question: it takes 1and1/3 ounces of cocoa to make a cup of hot cocoa. how many cups can be made from 32 ounces of cocoa? You will need to divide 32 by 1 and 1/3. 1 1/3 = 4/3. 32 divided by 4/3 is the same as 32 x 3/4 because dividing is the same...

**Chemisry**

I don't understand what you do after you find out how many electrons are in 1 gram?

**chem**

I don't know the answer I was just guessing sry

**chem**

Im so sorry I'm 6 years late. But maybe someone else can benefit from this answer.

**chem**

Salt contains lots of free ions for electricity to flow through. So iodized salt would work the best conducting electricity. However, epsom salt contains many free ions aswell, just not as much as iodized salt.

**math!**

If 10 human couples move into a new unpopulated area, how many people will live in the area after 200 years? The couples are 20 years old when they move. The people's life expectancy is 60 yeras, the average family has 4 children, and the average couple begins having ...

**math**

If 10 human couples move into a new unpopulated area, how many people will live in the area after 200 years? The couples are 20 years old when they move. The people's life expectancy is 60 yeras, the average family has 4 children, and the average couple begins having ...

**ap chem**

b] PF3 is polar because it contains polar bonds and is not symmetrical 2. H-N-H bond angle is 107.5 because in space everything is three dimensional. If you looked at a three dimensional molecule of H-N-H, you would see that the angle is greater than 90 degrees. When measured ...

**HISTORY**

The answer is B.

**help me...plz its not hard for u but for me it is**

How do you write a Bibliography? Can you just give me a example... THANKS!!! This will give you an example and an explanation of each item. http://www.aresearchguide.com/11guide.html These days, bibliographies are also known as "works cited" pages. http://grammar.ccc...

**Social Studies...Help plz**

Can you find me a website about Triangle Trade Route. (New England) Thanks a lot to who ever helps me out!! =] http://asterix.ednet.lsu.edu/~kfossey/4507/lesson3/cenac/group4.html THANKSSSSSSS Some New England trading ships followed the triangular trade route. The triangular ...

**HELPPPP**

What is relative humidity? What is Absolute humidity? What is Specific humidity? But can you give me an answer a paragraph long each thanks a lot! Or just answer 1 or 2 of my questions I will take any answer!! P.S- Thank you so much for your help!! Stepanie -- we Jiskha tutors...

**Science**

What is relative humidity? What is Absolute humidity? What is Specific humidity? But can you give me an answer a paragraph long each thanks a lot! Or just answer 1 or 2 of my questions I will take any answer!! P.S- Thank you so much for your help!! What is relative humidity? ...

**biology**

i need help writing sentences with the following words? autotroph diversity eukaryote heterotroph indigenous infer prokaryote stimulus sustainability I would look the words up to be certain on the meanings: I would use your text definition first, if available. We can check ...

**Algebra 2**

Is linear relationship a direct variation? why or why not? Assuming that the line is neither vertical or horizontal, it is a direct relationship. It indicates that one variable increases or decreases directly with changes in the other variable. A vertical or horizontal line ...

**reading**

what is the turning piont in Stuck in Neutral by terry trueman? The whole point is that just because someone is disabled, doesn't mean that they can't think or feel or that they aren't smart. I mean they could be, but obviously the guy in the book isn't. Then ...

**math**

U can't solve this question because u don't have the information u need. So it is basically impossible to solve this question.

**SOCIAL STUDIES**

What are the three forces that change the shape of the land and what are the effects do they have on the earth? http://en.wikipedia.org/wiki/Erosion

**Chemistry (Check)**

Electrons

**Stats: Joint Density Function**

Let the joint density function of X and Ybe given by: f(x)={kxy^2 for 0<x<y<1 (0 otherwise what is the value of k? Can someone please help me with this? The formula I used was: ))kxy^2 dx dy (where )) is double integration both from 0 to 1). I worked it out (I think) ...