Saturday
March 28, 2015

Posts by zoe


Total # Posts: 224

math
Puck is making a scale model of an airplane. The actual airplane is 98 feet long. The scale of the model is 1 cm : 4.7 ft. What is the length of the model? [Round to the nearest hundredth, if necessary.]
January 4, 2012

Chemistry
In respect to covalent bonding, what does it mean if there's an unshared or lone pair of electrons?
December 31, 2011

Science
A circular hatch in the hull of a submarine has a radius of 40.0 cm. The submarine is 850.0 m under water. If atmospheric pressure above the ocean is 1.01 x 105 Pa and the air pressure inside the submarine is 1.31x 105 Pa, what net force is exerted on the hatch? (ρsw = ...
December 19, 2011

chemistry
A gaseous mixture containing 5 moles of H2 and 7 moles of Br2 reacts to form HBr. Write a balanced chemical equation. Which reactant is limiting? What is the theoretical yield in moles? What is the theoretical yield for this reaction in grams? How many moles of excess reactant...
December 4, 2011

calculus
i'm not sure how to do this. can someone help, please? thanks! consider the function f(x0 = x^2 + 2x on the interval [-2, 2] a. draw a sketch of the graph of f(x). find the average rate of change on the interval [-2, 2] and sketch this secant line. b. find an expression ...
November 27, 2011

English
essay "peace and stability in a globalized world" I need some help. Thanks
November 25, 2011

Math
Typing error fing meaning find
November 15, 2011

Math
How do I fing volume of a shape?
November 15, 2011

calculus
let f(t) = 2*pi*t + sin(2*pi*t) a) find value of t in open interval (0,2) for which the tangent line at (t, f(t)) is parallel to the line through (0,0( and (2, 4pi) b) suppose the given funtion describes the position of a particle on the x-axis for 0<= t <= 2. What is ...
November 1, 2011

calculus
find the centroid of the plane region bounded by the curves y = cos x, y=sinx, x=0,
October 31, 2011

English
I need to know what just means in the following Sentance . Do you think this is just Please help even my mom is blank Tx
October 28, 2011

pre algebra with pizzazz 239
X+y=2
October 27, 2011

English
I'm blank on this question From the verbs listed write a noun ending in ion Divide Explode. Collide Confess. Invade. Rotate Comprehend. Deflect I don't need all the answers I just need to know what it means Thanks
October 27, 2011

Non verbal reasoning age 9-10
I really hate nvr it's horrible. I'm English so we have to do this I don't know if any Americans do it but I still hate it. For anyone who docent know what it is, it's basically pictures that mean something , but get changed ur ment to circle the answer . Any ...
October 27, 2011

Fourth grade math
Tx fo helping
October 27, 2011

Fourth grade math
What's range mean?
October 27, 2011

English
For our homework we had to draw and label an imaginary creature, then write an essay on it . I'm completely stuck on the essay bit please he
October 27, 2011

English
What word is wrong in this sentence ? Darren wusai and I is a good team. Please help I need this in in about six hours time!
October 27, 2011

English
Wow ! I thought it wasn't that simple as of being an opposite thanks I'm saved!
October 27, 2011

English
Really stuck on English homework.ahhhh! What is an antonym for the following words? Subtract Extend Spectator Least Confident Exterior Please, help despretly needed by Monday !
October 27, 2011

english
I'm not sue but I would put who because it's a simpler word
October 26, 2011

English check my answer
I'd just say I'm really bad at grammar and tell your teacher , can I have some extra help please? Sweet talking into thinking you love English always works
October 26, 2011

Social Studes
Hhhhhheeeeeellllllppppppppp mmmmmmeeeeeee oooooooonnnnnnn this
October 18, 2011

Math
I am a number with the same number of tens as ones. The sum of my digits is less than 5. Is am a number greater than 15. What number am i?
September 29, 2011

4th grade Math Help
hi, what is the least possible number, when rounded will become 1,000,000? would it be 999,999?
September 19, 2011

calculus
fin derivative of the function (t+e^t)(4- sqrt t)
June 26, 2011

calculus
differentiate the following funcation: R(t) = (t + e^t)(4- sqrt (t))
June 26, 2011

calculus
f(x)= (4x^2+5)/(3-2x) find derivative using limit
June 23, 2011

calculus
given the function f(x) = { x^2+2 if X<=2, 3 if x=2 and 4-x if x>= 2 -> graph f(x)
June 22, 2011

math
how do you do 16n-9 with the specials
May 16, 2011

Physics
A projectile is launched beneath the straight line path it would follow if there was no gravity. How many metres does it fall below the line if it has been travelling for 1 second? 2 seconds?
May 14, 2011

Calculus
Write the logarithm of a single quantity: 2ln(x)+ln(4)-(1/2)ln(9)
April 6, 2011

math (plz help)
1. 46 seats...... 30+4+4+4+4 2. No the 8th row has 62 seats and the 7th row has 58 (30+4+4+4+4+4+4+4+4) 3.THeater B has 145 seats.... (40+25 4's) hope that helped
March 14, 2011

chemistry.
i've tried to di it. 1)Na2CO3 + HCl---> NaCl+NaHCO3 2)Basic as Na2CO3 is a base and amount of HCl =0 3)NaHCO3+HCl--->NaCl+CO2+H2O 4)phenolphthalein for eq pint point 1 as it will indicate change in basicity and methyl orange for secong equivalnce point as it will ...
March 13, 2011

chemistry.
in the titration between Na2CO3 and HCl... 1) at the first end point what reaction is stoiciometrically complete? 2)At the start of titration where HCl=0 is the solution acidic or basic. ExPlain? 3) At the 2nd end point what reaction is stiociometrically complete? 4)Propose a ...
March 13, 2011

chemistry urgent
Draw major product of substitution reaction of (2R,3S)2-bromo-3-methylpentane with CH3CH2O- nucleophile
March 7, 2011

Organic chemistry
Draw major product of substitution reaction of (2R,3S)2-bromo-3-methylpentane with CH3CH2O- nucleophile?
March 6, 2011

science
anyone gonna help?
February 13, 2011

science
I'm in 5th grade and I need a cool, unusual science fair project. I have 3 days to do this. It has to be a question with a variable, not a demonstration. HELP!
February 13, 2011

banyan elementary
7x12=84
January 19, 2011

space
How many socks would it take to fill the space shuttle
January 9, 2011

biology
21% of a population is homozygous dominant, 49% are heterozygous and 29% are homozygous recessive. if the Hardy-Weinberg Law applies, what percentage of the next generation is predicted to be homozygous recessive?
January 4, 2011

math
How do you find the unit rate for this? The managerof Quality Dairy stores says it takes 1000 pounds of milk to make 100 pounds of cheddar cheese. Find a unit rate relating pounds of milk (m) to pounds of cheese (c). 1000 pounds of milk per 100 pounds of cheese.
November 29, 2010

math
find the values of x and y that solve the system of equations -3 x- 8y=19 4x+9y=-22
November 29, 2010

5th grade
adverb?
November 19, 2010

physics
crate weighs 823 N rests on plank that makes a 25 degree angle with the ground. Find components of crate's weight parallel and perpendicular to the plank
November 18, 2010

Math
1. -3/4*-(1 5/6)*(-7/4)= 2. -3/4*(-1 5/6)*7/4= 3. -3/4*(-1 5/6)*(-7/4)*(-2 3/8)= 4. 3/4*(- 5/6)*7/4*(-2 3/8)= 5. 3/4*1 5/6*7/4*(-2 3/8)=
October 25, 2010

Math
Info Sean is buying a new DVD player for 315. the store offers him an interest-free payment plan that allows him to pay in monthly installments of $25. Ques. Use n to stand for number of payments and a for the amount still owed. Write an equation for calculating a for any ...
September 21, 2010

Human services
what are the pros and cons of placing children of color in a causian home?
May 10, 2010

chemistry
consider the following reaction: Mg(s)+ 2HCl(aq) --> MgCl2 (aq)+H2 (g) What minimum amount of 1.75 M HCl is necessary to produce 27.5 L of H2 at STP?
April 26, 2010

Economics
Quality Adjusted Life Years evaluates interventions in _____ rather than _____. a. dollars; years b. utility; dollars c. years; dollars d. dollars; utility
April 19, 2010

Chemistry
Ammonium carbonate decomposes upon heating according to the following balanced equation: (NH4)2CO3(s)-->2 NH3(g)+CO2(g)+H2O(g) Calculate the total volume of gas produced at 25 C and 1.07atm by the complete decomposition of 11.86 g of ammonium carbonate.
April 16, 2010

Chemistry
Ammonium carbonate decomposes upon heating according to the following balanced equation: (NH4)2CO3(s)-->2 NH3(g)+CO2(g)+H2O(g) Calculate the total volume of gas produced at 25 C and 1.07atm by the complete decomposition of 11.86 g of ammonium carbonate.
April 16, 2010

Chemistry
oh i think you have to convert the mm Hg to atm first
April 16, 2010

Chemistry
dont you just multiply .038 times the total pressure?
April 16, 2010

Chemistry
okay yeah i got it. thanks its 736 mmhg
April 16, 2010

Chemistry
how do i know the water vapor pressure at 25C though?
April 16, 2010

Chemistry
The oxygen gas emitted from an aquatic plant during photosynthesis is collected over water at a temperature of 25 C and a total pressure of 760 torr . what is the partial pressure of the gas?
April 16, 2010

Advanced 6th grade Math
i still dont get it
April 12, 2010

Advanced 6th grade Math
What is the sample space of expiremental probibility
April 12, 2010

art 101
it is a
April 12, 2010

6th Grade Grammar
yeah definitly a
March 17, 2010

CRT205
(I did not get some answers correct on this categorizing fallacies assignment. It was graded but not with the correct answers. Can someone help me by telling me which type of fallacies the below statements are please so I can understand better. Thank you!) 1.My friend, who ...
March 8, 2010

2nd grade
Why is it helpful for scientists to know how long animals can live?
March 1, 2010

Molecular biology
What is the importance of the tertiary structure of a tRNA? I know the structure, but I'm not sure what is the importance of it. Is it stabilization?
February 24, 2010

Algebra
2(x+5)/(x+5)(x-2) = 3(x-2)/(x-2)(x+5) + 10/(x+5)(x-2) I know I have to get 2(x+5) = 3(x-2) but I don't know the intermediate steps. I tried canceling out to get 2/(x-2) = 3 + 10 / (x+5) and gross multiplying but that wouldn't make sense.
February 24, 2010

Physics
Oh picture looks like this 4q----a----q | | | | a a | | | | 5q----a----5q
February 1, 2010

Physics
Four charged particles are at the corners of a square of side a, as shown in the figure below. (A = 4, B = 5, C = 5.) (a) Determine the magnitude and direction of the electric field at the location of charge q. (Use k_e for the Coulomb constant and q and a as necessary.) ...
February 1, 2010

Physics
A proton accelerates from rest in a uniform electric field of 620 N/C. At one later moment, its speed is 1.30 Mm/s (nonrelativistic because v is much less than the speed of light). (a) Find the acceleration of the proton. m/s2 (b) Over what time interval does the proton reach ...
February 1, 2010

Biology
I don't understand how to do this at all!! I've been Googling the past hour and I just don't get it. My teacher won't respond and my exam is tomorrow. I get that we cleave with an acid and then we can do amino acid analysis. The entire protein can be pieced ...
January 27, 2010

home economics
name two macronutrients and two micronutrients
January 14, 2010

Physics
By what factor would you have to decrease the tension in a stretched string in order to decrease the wave speed by a factor of 3.5? I know that v = sqrt(T/u) but am confused as to what to do?
January 11, 2010

Physics
A particle executes simple harmonic motion with an amplitude of 9.00 cm. At what positions does its speed equal two thirds of its maximum speed? I got: v2 +ω^2x^2 =ω^2A^2 vmax =ω A and v = ωA/2?
January 4, 2010

Physics
A particle executes simple harmonic motion with an amplitude of 9.00 cm. At what positions does its speed equal two thirds of its maximum speed?
January 4, 2010

Health Care Reimbursement Methodologies
Your hospital has just received a reimbursement rejection from the fiscal intermediary for two outpatient procedures that were performed on the same day. This rejection was probably generated by
October 22, 2009

Physics
The water in a river flows uniformly at a constant speed of 2.53 m/s between parallel banks 69.8 m apart. You are to deliver a package directly across the river, but you can swim only at 1.74 m/s. (a) If you choose to minimize the time you spend in the water, in what direction...
October 12, 2009

Physics
The water in a river flows uniformly at a constant speed of 2.53 m/s between parallel banks 69.8 m apart. You are to deliver a package directly across the river, but you can swim only at 1.74 m/s. (a) If you choose to minimize the time you spend in the water, in what direction...
October 12, 2009

tourism
What's the difference between a marketing consortia and a hotel refferal system?
October 10, 2009

math
Hi, I wrote the first one wrong... The hawks won 17 more hockey games than they lost. They played 52 games in all and had 3 ties. How many games did they lose? This is what I did so far... 52 games ...-17 ------ 35 okay now there is 3 ties??? so they had 35 games left.. is ...
October 8, 2009

math
The hawks won 17 hockey games than they lost. They played 52 games in all and had a 3 ties. how many games did they lose? so 52 ..... games in all won 17......games ties.........3 this is what I do 52 - 17 ------ 35 so they had 35 games left. From here I am stuck DO I ADD 3 ...
October 8, 2009

Physics
C.) What is her average velocity over the entire trip? I was wondering how it is that we find out the velocity? I know that velocity would be change in X/change in time, but for the way the problem was set up, I'm not sure how to go about solving it.
October 8, 2009

Physics
A person walks first at a constant speed of 4.70 m/s along a straight line from point A to point B and then back along the line from B to A at a constant speed of 2.80 m/s. (a) What is her average speed over the entire trip? (b) What is her average velocity over the entire ...
October 8, 2009

Physics
I got close! I tried to solve it and cancelled things out, to which I got A=0, B=1, but I can't seem to get C right. I thought C would = 0, but apparently that's wrong. Any clues as to where it went bad?
October 4, 2009

Physics
Your answer from part b is rate = ??m3/s ??m3/sec x sec = m3 Solve for sec. Then convert sec to hours. sec x (1 min/60 sec) x (1 hr/60 min) = ?? --------------- So I have the rate 4.73e-4 m3/s. I'm not sure how the cancellation for the m3 to disappear, but I get the ...
October 4, 2009

Physics
Assume it takes 6.00 minutes to fill a 45.0 gal gasoline tank. (1 U.S. gal = 231 in.3) I don't know how to solve for part C. (a) Calculate the rate at which the tank is filled in gallons per second. ANSWER: 0.125 (b) Calculate the rate at which the tank is filled in cubic ...
October 4, 2009

physics
A surveyor measures the distance across a straight river by the following method. Starting directly across from a tree on the opposite bank, she walks 90 m along the riverbank to establish a baseline. Then she sights across to the tree. The angle from her baseline to the tree ...
October 4, 2009

computers
in which program does the default show you the hierarchy of drives, folders, and files in a split window
July 9, 2009

Finite Math
Thanks Reiny!!!
February 24, 2009

Finite Math
A "hand" consists of a set of 5 cards selected from an ordinary deck of 52 cards: (1) How many different hands contain exactly 4 diamonds? = 27885 (2) How many different hands contain exactly 4 cards of the same suit (any of the four suits)? (3) How many different ...
February 24, 2009

math
The answer is 92. Anyone have idea how to solve this or why the answer is 92? Thanks in advance!
February 21, 2009

math
Three coins are selected from 10 coins: 4 dimes, 4 nickels, and 2 quarters. In how many possible ways can the selection be made so that the value of the coins is at least 25 cents? I know that the total outcomes equals 120, but how do I find how many of these have the value of...
February 21, 2009

Social Studies
hi! cultural diffusion is when two groups come together to make new ideas like if two districs come together to plan new ideas like a spread or school board meeting for good new ideas
January 30, 2009

world geography
what factors account for the simmilarities and differences between the subdivisions in tropical climate zones?
January 21, 2009

3rd grade
SYRYTRYWTYW
November 12, 2008

japanese :)
Dear SraJMcGin, Can you let me know where to translate English to Kanji Yours Truly Zoe
November 8, 2008

re -same question again
sorry to post this question again but i am having trouble finding evidence of what jesus did not do . i don`t really understand the question like i mentioned in my last post does it mean that he did not get married or have children . i can`t find anything i can print off. i ...
September 24, 2008

year 8 re
i need to find 3 pieces of evidence of what jesus did and 3 things what jesus didn`t do. for the 3 things jesus did i have found feeding the 5000 , walking on water and healing the sick but i am having trouble finding evidence for what jesus did not do. does it mean not ...
September 23, 2008

ict
please could someone help i need to give 4 answers . what is needed to access the internet? thanks
September 15, 2008

music
can you tell me where to find free music notes for guitar and paino, thx.
September 10, 2008

COM220
Do you think Eliminating Negative Thinking is a controversial, supportable and sound topic for a research paper?
July 2, 2008

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