# Posts by elizabeth

Total # Posts: 1,069

Physics (last question)
A 800 kg projectile is fired vertically upward with an intitial velocity of 50 m/s. Assuming that no friction is present, how high above the ground will the projectile travel?

Science
h t t p: // en.wikipe dia. org/wi ki/ Interna ti onal_ Date _Line take out the spaces.

Science
There's a whole story about the farmer's workday and the purpose of the Int. Dateline. Hold on I'll get a link for you.

Physics
Okay thanks. I'll check it to make sure and see what I get.

Physics
A 500 kg car has an engine that uses only 40% of the energy from the gasoline for motion. If there is 15,000J of potential energy stored in the gasoline, how fast an the car go on the gasoline? I have no idea how to set this up. Any help?!

history
ancient style for what?

Physics
A 500 kg car has an engine that uses only 40% of the energy from the gasoline for motion. If there is 15,000J of potential energy stored in the gasoline, how fast an the car go on the gasoline? I have no idea how to set this up. Any help?!

College Algebra
take it like an equation. pretend the > sign is an equal sign. -2x +4 = 12. when your done, just substitute the sign back in, and flip it. (like this <)

Physics
A 500 kg car has an engine that uses only 40% of the energy from the gasoline for motion. If there is 15,000J of potential energy stored in the gasoline, how fast an the car go on the gasoline? I have no idea how to set this up. Any help?!

Physics
thanks.

Physics
A snowmobile does 400J of work in towing a sled to the top of a hill. During th etrip up the hill, it took 50J to overcome the work of friction. What is the potential energy of the motionless sled at the top of the hill? Well I know that the formula for potential energy is ...

Algebra 1
This is a five step problem: The width of a rectangle is 6 cm less than the length. A second rectangle, with a perimeter of 54 cm, is 3 cm wider and 2 cm shorter than the first. What are the dimensions of each rectangle. I just don't understand how to write the equation, ...

Physics
Sally applies a horizontal force of 500 N with a rope to dtag a wooden crate across a floor with a constant speed. The rope tied to the crate is pulled at an angle of 67.5 degrees. a) How much force is exerted by the rope on the crate? b) What work is done by Sally if the ...

CHEM
the answer is 1.95×10−34m. trust me, i got it wrong and it just told me the right answer !! :/

Physics
On July 19, 1969, Apollo II's orbit around the moon was adjusted to an average orbit of 111km. The radius of the moon is 1785 km and the mass of the moon is 7.3e22 kg. a) How many minutes did it take to orbit once? b) At what velocity did it orbit the moon?

spanish
or cafe could be describing the post office, saying that the brown post office was closed when i went there...

spanish
oficina de correroes = post office my bad haha.

spanish
I went/the office of running/[it] was closed/brown or cafeteria

spanish
I went to the office of running/gym or something like that.

Spanish (Foreign Language)
Okay I got it. Ir is an irregular preterite tense, right? So the conjugations would be: Yo fui Tu fuiste Ella fue etc. etc. etc. So yes, your right.

Spanish (Foreign Language)
Hmm...I'll be right back. It's in my Spanish notes, I hafta get them.

Spanish (Foreign Language)
What is 'treasure chest' in Spanish?

ETH 125
It's asking to cite. How in the world are you supposed to cite when it's about you?

math
it good

science
Is this true? Is a permanent marker a chemical or physical change? A permanent marker is a physical change. Because it’s solvent is alcohol based, the mark made by the marker will dry quickly because of the speedy evaporation of the base. Almost immediately afterward, a ...

Physics
A player kicks a football from ground level with a velocity of magnitude 31.0 m/s at an angle of 30.0 degrees above the horizontal. What is its maximum height?

math
if y=6 3x-y=10 what is x

science
What makes certain inks permanent and others washable? And why does "permanent" ink still dissolve in alcohol?

chemistry
what make permanent markers permanent and washable markers washable and why does that change with alcohol?

chemistry
What makes certain inks permanent and others washable? And why does "permanent" ink still dissolve in water.

science
yellow stone national?

native american history
Discuss the divisions between the traditionalists and moderate Indians from WWII on. Why does this war help to produce a sharp division between them? How did the actions of the government fully deepen it? Can someone help me break this question down and also if someone can ...

Math
How many different four-digit numbers can you make using all the digits in each set only once? a. 1,2,3,4 b. 0,1,2,3 c. 0,0,1,2

Science
Thank you, I'm going to practice and see how I do.

Science
Metric System How do I know when to multiply and when to divide when converting to metric or from? Sample- 450km=______mi

Ethnics Culture Diversity
List two or three characteristics of Orientalism? How may Orientalism and prejudice contribute to hate crimes against these groups?

Grammar
What is the case and syntax of trhe word feet in the sentence "The center of a tennis net is three feet long." In this sentence, "feet" is an adjective modifying the noun "long." feet is part of a dimensional adjective "three feet long"...

Grammar
I need help with the following question: The law from the 1800s mandated that men could buy alcohol and cigarettes only from a state store. My question to this is back in the 1800's women were not allowed to by alcohol, so I don't think this is a biased statement, it ...

Mathematics
Please help... In a 200 m swimming race between 8 boys, the probability of Omar winning the race if he is in one of the two outside lanes is 1/4. If he is in any of the other lanes, the probability of Omar winning is 1/3. If the lanes are drawn at random, what is the overall ...

Science
Knowing what you do about food chains and the flow of energy through an ecosystem,why are there less lions than gazelles on the African plains? Hmmm! This question asks YOU to synthesize what YOU've learned about food chains and then draw a conclusion. We'll be happy ...

algebra
How do you simplify -4x ---- x-x^2 thanks! Take an x out -4 --- 1-x it said the answer was -4 --- x-1

algebra
Please can someone help me? Thanks! Find the least common multiple of each pair of polynomials: 12x^2-6x-126 and 18x-63 Simplify each sum: 5y+2 2x-4 ---- + ----- xy^2 4xy

ap us gov and politics
the media and lack of communication

math
2+2= 4

history
When did people stop using parchment and start using paper? These sites will give you the history of paper: (Broken Link Removed) http://inventors.about.com/library/inventors/blpapermaking.htm I'm not really sure as to the answer. You see, I'm writing a story that ...

Math
i need help finding the slope of the line that passes through each pair of poinst. 1. (1,-3),(4,3) 2.(5,0), (-2,1) Divide (y2 - y1) by (x2 - x1). For (1), this would be 6/3 = ? Thank you. The first one came out to 2. The second one is not working out. I got 4 1/2 and I know ...

Math
-4 is less than 12+x (Idon'y know how to make the less than sign on the computer) I've subtracted 12 form each side and I get -8. What am I doing wrong? 2m-5=17 I added 5 to each side and get 22. Then divide by 2 get 11. Is that coeerct? -4 < 12 + x -16 < x You ...

Science
I have to unscramble these letters to make words about electricity. I can't figure out these three. ISRESE LARLPLAE TKLATIWO series, parallel, kilowatt SERIES PARALLEL KILOWATT Thank You Thank You Thank you so much!

algebra
Can some kind soul please assist me with this question? :) Simplify the expression. Use only positive exponents: (4p^2q)(p^2q^3) Bless you! 4 p^4 q^4 Exponents add when multiplying Even when there's two sets of parenthesese?

calculus
can anyone tell me if tan-1x= 1 over tan x? No. They are different. tan^-1 (x) is a frequently used way of writing arctan x, which means the angle whose tangent is x. tan (tan^-1 x) = x

Social Studies
How has our goverment changed from what the framers of the Constitution intended? Explain by examining the implied/informal powers and expressed/formal powers of the 3 branches of goverment

Social Studies
how does the power of judicial review affect the seperation of power in the Federal Goverment? Judicial review is part of the system of checks and balances. If each branch of government was able to do what they wanted when they wanted, we would be in more of a mess as a ...

russian revolution
In 1923, who did Trotsky begin to oppose? What were some of the consequences? http://en.wikipedia.org/wiki/Leon_Trotsky

russian revolution
What qualities was Leon Trostky known for? http://en.wikipedia.org/wiki/Leon_Trotsky

to kill a mockingbird
how do the people of maycomb seal and oral contract? I belive they spit in thier palms and then "Shook on it" with a very enthusiastic clap as thier hands met, gripping tightly and shaking once. Please review the story to verivfy.

English
I read what it says on irony, but I still don't get it. Is "But in the days before we left, when there was so much confusion and mayhem, worse than a hog killing." irony? I don't see the irony in just that sentence -- just very descriptive comparison. Maybe, ...

Geography
What are the two South American countries with no known oil reserves? This site lists at least four South American countries with no known oil reserves. http://www.eia.doe.gov/emeu/international/reserves.html

Geography
What are two South American countries with no known oil reservers?

Geography
What country do the Galapogos islands belong to? This site has your answer. http://www.galapagos-islands.net/

world geography
Where are you from if you are a: a.carioca b.limeno c.porteno d.paceno d.paulistano All the "n's" have a tilda on them. Check out these sites. http://ipanema.com/rio/basics/e/people.htm (Broken Link Removed) (Broken Link Removed)

Geography
What is a topographic Map and what does it show you on it? http://en.wikipedia.org/wiki/Topographic_maps

Interesting Geometry Probem
I am bulding a sculpture out of rock and need help figuring out how much rock to buy... Here are the figures... 1 ton of 1.5" rock covers 107 sq. ft. My sculpture will be comprised of 24 layers of rock 2" thick. Each layer will be aproximatly 3ft. by 3ft. How many ...

Geography
Land use: What type of farming is suited to poorer soil, a short growing season, hillyland, and nearness to markets? The nation's largest inland port, situated at the junction of three rivers? The area which together with the coastal waters off Cape Cod, accounts for a ...

Math/history
I have to do a project and need info. about mean, median, mode, range, freqency tables line plots, and stem and leaf plots. I would like historical facts like how, who, where and why these methods came to be. I want to get a good grade so I am willing to do do extra research. ...

world geography
What is a global citizen? I have to write a report on this. It must have examples, compare and contrast etc. What is a global citizen? I remember a very early Sunday School lesson, where Jesus indicated to the disciples the TWO commandments in response to a question: The two ...

social studies
What is a first-hand or eyewitness account called? first-person account -- ??? primary source??

math
I don't understand ordering numbers in comparing,could you explain it to me. I'm not sure what your question is asking, can you give an example of the prolblem you're doing? Typically, we order numbers by arranging them from least to greatest or the other way. ...

math (mixed Review
i do not know how to do mixed practice

elementary brainteaser
My college teacher gave us a brainteaser for elementary kids and I can not figure it out! next letter: s,m,h,d,w,m,_? ok seconds, minutes, hours, days, weeks, months, ?? then what? next is years years? Ok, yes. Years is the next term in the sequence I gave, but the letter &...

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