# Posts by elizabeth

Total # Posts: 1,136

Can somebody help me solve this problem? Simplify and evaluate the expression for y = 0, z = -1.5. -0.8z +0.005z(-0.001y - 3.1 + (-1.5z + 3))

Physics
Calculate the force of gravity on a spacecraft 19200 km (3 earth radii) above the Earth's surface if its mass is 1600 kg. I know that 1/16 of Fg is the answer but I can't seem to find out what the Fg is.

Physics
Calculate the force of gravity on a spacecraft 19200 km (3 earth radii) above the Earth's surface if its mass is 1600 kg. I know that 1/16 of Fg is the answer but I can't seem to find out what the Fg is.

us history
Did the American government’s actions at the turn of the 20th century support the ideals expressed in the Declaration of Independence?

science
a piece of furniture that weighs 500 newtons is pushed along the ground for a distance of 10 meters then lifted 2 meters above the ground into a truck. how much work is done if the force required to push the furniture is 150 newtons?

Writing
thanks!

Writing
Can you please check my citation? I'm trying to find out if it's correct. "How Deforestation Affects Us." Edu.udym. 11 Aug. 2008.web. 23 Oct. 2010. <url> (I'd put the url if jishka would let me)

Writing
I'm trying to cite an article from edu.udym. Should I put edu.udym on the citing or should I add the dot com to the end?

Writing
Thanks. I think I get how to do it now. :) If I need any more help I post my question.

Writing
MLA

Writing
Can you please check my citation? "Deforestation facts, Deforestation Information, Effects of Deforestation." National Geographic. n.p.,n.d. 10/22/10

English Research
Would the online National Geographic site be a periodical or a website? I'm trying to cite a source on an article from the site,but I don't know if it's a website or a periodical,it seems like both.

Does this Introduction sound fine for an Argument essay? Forests probide many supplies that are essential in our lives. They give us oxygen, wood fiber for paper, herbs for medicine, and timber for building structures. Forest materials are so necessary that humans can't ...

Writing
Does my thesis statement sound ok? Deforestation should no longer go on, because endangered species are close to extinction, less oxygen is being produced, and global warming is turning into a bigger issue because of it.

yes because 7*2=14 and any even number can be divide them by 2 groups and another math sentence I have is 14/2=7

chem
This is how far i got 2330g *4.184J/g degree C *(100 degree C-unk) =537,000J so 9748.72J * unk =537,000J so 537000/9748.72=55.08 so 100-55.08= Initial temp of 44.92 degrees celsius :)

CHEM
is breaking an egg a chemical or physical change? is cooking an egg a chemical or physical change?

math
42

Composition
Reforestation or Deforestation?

Composition
Which topic do you think would be easier to research for an argument essay? Deforestation or Recycling?

world civics
provide 2 examples of the devastation diease caused

physics
Is the equation above used to determine the normal force exerted by the road on the car? When I used the equation I got (72)(9.8) - (72)(729)/88 = 1.2 (2 sig figs) This answer was incorrect. What am I doing wrong. And.... what equation can I use to figure out the 2nd part?

physics
A sports car of mass 950 kg (including the driver) crosses the rounded top of a hill (r = 88 m) at 27 m/s. Determine the normal force exerted by the road on the car. Determine the normal force exerted by the car on the 72-kg driver. Express your answer using two significant ...

college Physics
A car is traveling at 7.0 m/s when the driver applies the brakes. the car move 1.5m before it comes toa complete stop. if the car had been moving at 14m/s how far would it have continued to move after the brakes were applied? assume the braking force is constant. what is the ...

Geographyand socity
1. Meterology 2. Temperatures 3. Atmosphere 4. Hydrospere 5. The average yearly weather patterns in a given area. (I think these are correct.)

Geometry
for every letter n f(n) is added by the next number. 0,1 1,2 3,3 4,6, 5,10 6,15 7,21 8,28 9,34 10,43 11,53 12,64 13,76 14,89 15,103 16,118 17,134 18,151 19,169 20,188= answer

MAT 116

math
it would look more of a rectangle but the sides should be thus: 6,6,7,7

Physics
i have done all my homework these 5 problems i could not understand.. my answers are due at midnight tonight im a senior in this physics course and math is generally my strong point but when it comes to things like this i try and i didn't get it so i posted the problem on ...

Physics
A 160 N block rest on a table attached to a string and pulley. The suspended mass over the side of the table has a weight of 53 N. PART 1: What is the magnitude of the minimum force of static friction required to hold both blocks at rest? Answer in units of N. PART 2: What ...

Physics
omg thx so much!!!!

Physics
A car is traveling at 54.2 km/h on a flat highway. The acceleration of gravity is 9.81 m/s^2. PART 1: If the coefficient of kinetic friction between the road and the tires on a rainy day is 0.131, what is the minimum distance needed for the car to stop? Answer in unitsof m. ...

Physics
yay thank you!!

Physics
The board sandwiched between two other boards weighs 92.6 N. If the coefficient of friction between the boards is 0.587, what must be the magnitude of the horizontal forces acting on both sides of the center board to keep it from slipping downward? Answer in units of N.

Physics
The coefficient of static friction between the 3.78 kg crate and the 38° incline is 0.306. What minimum force must be applied to the crate perpendicular to the incline to prevent the crate from sliding down the incline? The acceleration of gravity is 9.8 m/s^2. Answer in ...

Physics
wat is the horizontal force??

Physics
sry but im a blonde so not even half of that just made sense! :(

Physics
A box of books wighing 339 N is shoved across the floor by a force of 506 N exerted downward at an angle of 33° below the horzontal. The acceleration of gravity is 9.81m/s^2. If µk between the box and the floor is 0.59, how long does it take to move the box 5.27 m, ...

physics
Final Velocity= VI + a(t) Distance= 1/2 (VI + VF)(t) you must first convert km/h to m/s and then you should be able to find your answers

chemistry
The mass ratio of Kr to F in a particular compound is 2.206:1. How many grams of fluorine are present if the compound contains 713.3 grams of Kr?

chemistry
The mass ratio of Kr to F in a particular compound is 2.206:1. How many grams of fluorine are present if the compound contains 713.3 grams of Kr?

Put the following numbers in order from least to greatest. 0.0875, 7/8, 0.875%

Chemistry
410,434,486,657

Algebra 1
could you tell me where I can get the "why do girls like guys who wear shirts with eight buttons?" worksheet to print free online?

statistics
12. Four research participants take a test of manual dexterity (high scores mean better dexterity) and an anxiety test (high scores mean more anxiety). The scores are as follows. © …………….. (d)…………….. Person Dexterity ...

Geometry
On the line AD,if AC=24 and CD=32,how do you find the length of AD.

chemistry
What is the concentration (in molarity) of acetone in a solution prepared by mixing 11 mL of 4.0 M acetone, 16 mL of 0.02 M Br2, 11 mL of 1.0 M HCl, and 16 mL of water?

math
what is the appropriate graph for time and speed??

Geography
heeey :} do you have homeschool? or the classes in the computer? cause I have my classes by the computer, &this are my answers :D I'm on highland. pleaseeeee help me. :} if you got computer classes. xD

math
Reading readiness of preschoolers from an impoverished neighborhood (n = 20) was measured using a standardized test. Nationally, the mean on this test for preschoolers is 30.9, with s = 2.08. a.Children below the 30th percentile are in need of special assistance prior to ...

Medical Terminology
Why are some medical terminology is more common, while others are not as well known.

Use the Distributive property to rewrite the expression and simplify. 6(y + 13)+ 21y

Medical Terminology
What are two example of how knowing medical terminology will help you provide good patient care?

biochemistry
A weak base has pKb = 9.25.. A. Calculate the % ionization at pH = 8.25 B. Calculate the % ionization at pH = 10.25 C. What is the pH when 50% of the weak base is ionized?. Is calculating ionization for pkb the same as pka? How do I go about doing it?

Ap european history
I will sure try :)

Ap european history
Most of the paper is written down I just didn't know how to organize it.... thank you

Ap european history
Writeacher that website is great! Thanks so much :) do you have any ideas on how to king of organize my paper?

Ap european history
That could work.... Thanks!

Ap european history
I have most of the paper i just need something to catch the readers attention at the begining and i can't think of anything.....

Ap european history
im writing a paper comparing and contrasting the government , art, and religion of ancient Greece, Rome, and the Middle ages and i need a catchy intro.... please help!!(: ( thanks Ms. Sue you really helped :)

AP european history
im writing a paper comparing and contrasting the government , art, and religion of ancient Greece, Rome, and the Middle ages, and i don't know how to make an outline....?

statistics
standard deviation on the 80 students individual average

statistics
2. The director of admissions at a large university advises students that the cost of textbooks will average more than \$300 for a typical semester. A random sample of 80 students enrolled in the university shows a sample mean cost of \$315.40 and a sample standard deviation of...

AP european history
I'm writing a paper comparing and contrasting the government , art, and religion of ancient Greece, Rome, and the Middle ages and I have no idea how to even get started. Please help!

summarize the parts of a controlled expirament.

Economics
Explain how decision making, interaction and the workings of the economy influences the marginal benefits and marginal costs associated with the decision to purchase a house?

fisica 10mo
sobre una rueda de radio r=0.5 m esta enrollada una cuerda que se desenrolla ejerciendo una fuerza de tracciÃ³n contante F 50 nt como muestra la figura 1.1 en 2 seg se han desarrollado 4 m. Se pide calcula: a. La aceleraciÃ³n tangencial de un punto de ...

algebra 2b
Determine in which direction the parabola opens y equals x2-7x plus 18?

Math

Algebra 1
use the distributive property to find 6 times 54?

Physics
When an automobile moves over a wide, closed loop of wire embedded in a road surface, the magnetic field of the Earth within the loop altered? Is a pulse of current produced? Can you cite a practical application for this at a traffic intersection?

algebra
2(x)+1=5 2(x)+1=5 2(x)=5-1 x=5-1/2 x=4/2 x=2

i don't understand this question nad i need an answer : make a list of words that would entice you to purchase a product. need answer:) thanx

Pre-Algebra B

making a good impression is vital, since we tend to form an opinion in about

Algebra
(5c-9)(5c+1)

help with algebra
(p-7)(p+8)

(p^2-7)(p+8)

Physics
a) What is the tangential acceleration of a bug on the rim of a 6in. diameter disk if the disk moves from rest to an angular speed of 79 rev/min in 5 seconds? b) One second after the bug starts from rest, what is its tangential acceleration? What is its centripetal acceleration?

Science
What percentage of the sun is shine on the Earth in Maine during Spring

chemistry
balance this chemical equation: aqueous solutions of alumininum chloride and sodium carbonate are combined, producing alumininum carbonate

Chemistry
Write a balanced chemical equation for nitrogen gas reacts with oxygen gas to produce nitrogen dioxide gas

chemistry
Determine the ammoint of lead precipitate in grams that can be produced from 50 grams of ammonium chloride and excess lead II nitrate

Math
40% equals .4 and 4/10 which can be reduced to 2/5

Math
yes 1/7 is less then 1/6

Health
In the market for health insurance, what kind of asymmetric information causes adverse selection? Explain.

Healthcare
Give three examples in which the health provider has information that is unavailable to the health consumer.

Healthcare
Give three examples of asymmetric information in which the health consumer has information that is unavailable to the health provider.

ethics

chemistry
Aqueous solution with a pH of 10.6 is diluted from 1 L to 1.5 L. What is the pH of the diluted solution?

chemistry
what is the pH of .28 M HNO3 (aq) at 25 degree celsius? (Kw = 1.0 x 10 ^-14)

chemistry 101
1008 cCal

physics
(4pi*10^-7)(4.8*380/.32) =____mT

Math
Use the rules of exponents to simplify each exponential expression. Your result cannot contain any negative exponents. Thank you for your help. (2m^2)^3 (4x^2y^4z^7)^0

ENGLISH
What do you think of when you hear the term academic honesty? How does knowing the difference among original ideas, common knowledge, and plagiarism help you stay honest when you write an academic paper? What are some of the consequences of not being academically honest?

Biology
1. Plant seed coats, mycorrhizae, and cuticles are examples of ways plants have adapted to life on land. The answer is A.

Chemistry
The vapor pressure of CCl3F at 300 K is 856 torr. If 11.5 g of CCl3F is enclosed in a 1.0 L container, will any liquid be present? If so, what mass of liquid?

What are 3 IMPORTANT characteristics that a class president needs? Please answer!!

geometry
How do you draw 224 degree angle???

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