Saturday
December 20, 2014

# Posts by Ella

Total # Posts: 224

physics
gain, not again
December 8, 2014

physics
Assuming 100% transfer of energy in the system, please calculate maximum KE (Kinetic Energy) that the rocket has if the rocket were to again a height of 25 meters. Rocket mass = 0.5 kilograms, and gravity = 9.8 m/s^2
December 8, 2014

Math
No the cook doesn't have enough flour. You first need to find a common denominator of twelve. So you are 1/12 a cup of flour short.
December 8, 2014

Honors Chem
If I make an ice pack with 750 mL of water, what mass of ammonium chloride must I include to get the temperature to drop from 20 degrees celsius to 5 degrees celsius. The heat of solution of the water and ammonium chloride is 14.8 kJ/mole. I just need help setting this problem...
December 2, 2014

CHEMISTRY HELP
how can analytical chemistry help on different fields of sciences and technology?
November 26, 2014

English
Birches by Robert Frost When I see birches bend to left and right Across the lines of straighter darker trees, I like to think some boy's been swinging them. But swinging doesn't bend them down to stay As ice-storms do. Often you must have seen them Loaded with ice a ...
November 19, 2014

ap biology
The best conclusion concerning delta is that the cells a. contain no DNA. b. contain no RNA. c. contain only one chromosome that is very short d. are actually in the G0 phase e. divide in the G1phase Explain your choice: Would it be d?
November 19, 2014

math
GCD (24,20) IS 4. sINCE gcd(4,12 ) is 4 then GCD (24,2012 IS 4 USE Euclidem LGERITHM TO FIND THE gcd 722, 2413,209
November 18, 2014

English
Here is another poem that uses personification to help define the theme. Answer the questions that follow using all you know about poetic devices. The heart asks pleasure first, And then, excuse from pain; And then, those little anodynes (a medicine that relieves pain) That ...
November 18, 2014

English
Act I of An Enemy of the People Question Think carefully about what each quote might infer about the character and choose the most appropriate answer in the context of the play. Taking one thing with another, there is an excellent spirit of toleration in the town--an admirable...
November 17, 2014

MATH
write the following square root in the form a over sq root b, where a and b are intergers and b has the least value possible root 63 =
November 14, 2014

Math
thank you Jeff(:
November 13, 2014

Math
What is the order of the numbers from least to greatest? 2.01, 2.1, 2.001, 2.11, 2.011
November 13, 2014

November 13, 2014

History
Hey, if you look under this at related questions.. People asked the same thing and it has answers(:
November 13, 2014

math
Bert is 5 years older than twice the age of mario. Nine years ago, the sum of their ages is 50. How old is each now?
November 7, 2014

Please check my answers because I need to do good at this. 1. When consuming fats the healthiest choice is foods high in? A. saturated fats B. unsaturated fats * C. trans fat D. cholesterol 2. The body's main energy source should come from what essential nutrient? A. ...
November 6, 2014

physics
find the mass of a ball on a roof 30 meters high, if the ball's gravitational energy is 58.8 joules.
November 3, 2014

Algebra word problem
A parabolic arch has a height of 20 m and a width of 36 m at the base. If the vertex of the parabola is at the top of the arch, at which height above the base is it 18 m wide?
October 11, 2014

An airplane has an air speed of 112m/s [N 20 degrees W] and has a ground speed of 106 m/s [N 25 degrees W]. Find the velocity of the wind.
September 28, 2014

A student swims at 4m/s. She is swimming from west to east across a river that's is flowing 2.2m/s [S]. A) if the river is 100 m wide, what is the quickest time that she can swim the entire width? B) how far downstream will she be? C) if she decides to go directly across ...
September 28, 2014

quiz tomorrow on these type of questions I need help!!!!
September 28, 2014

Physics
A student swims at 4m/s. She is swimming from west to east across a river that's is flowing 2.2m/s [S]. A) if the river is 100 m wide, what is the quickest time that she can swim the entire width? B) how far downstream will she be? C) if she decides to go directly across ...
September 28, 2014

Help with physivs
September 28, 2014

physics
An airplane has an air speed of 112m/s [N 20 degrees W] and has a ground speed of 106 m/s [N 25 degrees W]. Find the velocity of the wind.
September 28, 2014

physics
A car is moving with a velocity od 10.1m/s [N] while on a ferry that is moving across a lake.if an observer on shore measures the velocity of the car to be 29m/s [N] how quickly is the ferry moving?
September 28, 2014

Physics
A car is moving with a velocity of 10.1m/s [N] while on a ferry that is moving across a lake. If an observer on a shore measures the velocity of the car to be 29.0m/s [N] how quickly is the ferry moving?
September 24, 2014

geography
this occurs when cooler air cannot retain all its vapor
September 1, 2014

geography
This process distributes the heat from the sun around the earth?
September 1, 2014

geography
This reflects some heat back into space and traps some heat near the earth.
September 1, 2014

conducting expiriments
conduct the expiriment and record your results mean?
May 29, 2014

science
What can be done to prevent mine drainage from damaging the ecosystem
May 5, 2014

POL201
Fredick Winslow Tylor was concern with all but the following a. making workers feel appreciated b. making 1st class worker out of 2ne class worker c. efficiency d. good management
April 28, 2014

AP Chemistry
1,2-Benzanthracene is a yellow-brown nonvolatile solid with molecular weight 228.29g*mol-1. an 18.2632-g sample of 1,2-benzanthracene is dissolved in 250.0 g of benzene, C6H6. Whta is the vapor pressure of this solution at 25C, in millimeters of mergury, if the vapor pressure ...
March 10, 2014

spanish
?Le gusta tocar la guitarra a la maestra?
February 18, 2014

Health/Writing
Alright, thanks a bunch :)
February 15, 2014

Health/Writing
the story talks about his struggle from cancer. the removing cancer will come in the middle of the story. first i want to show how he ended up with it.
February 15, 2014

Health/Writing
So I'm writing a story about a guy who gets brain tumor because of a car accident. I know it may be a stupid question, but how can someone retrieve tumor in such a situation? Or where can radiation, enough to give cancer, be found. Maybe a place or a truck or something ...
February 15, 2014

Algebra
The answer is C, I looked at his answer and all that is different is he multiplied the equation in the parentheses by 2!!!
February 13, 2014

Chemistry
Alcoholic drinks contain ethanol. 10cm3 of ethanol is called one unit of alcohol. Men are advised to drink a maximum of 21 units of ethanol a week, while women are advised to drink a maximum of 14 units. Wine contains about 14% ethanol by volume. A) a bottle of wine contains ...
February 8, 2014

Wriitng
thank you guys!
December 30, 2013

Wriitng
What would be the reaction of a teenage daughter after rescuing her parents after their kidnap? so this is for a story I'm writing. basically, my main character finds her parents and is finally there after a lot of hard work and struggle. she's seen a lot of things she...
December 30, 2013

Writing
Thank you!!
December 20, 2013

Writing
what would be another way to phrase "i'm on a rollercoaster that only goes up". like is there another metaphorical or symbolic sentence like it which we can say. just to erase some confusion--i'm talking about using other words that portray the same meaning. ...
December 20, 2013

English
December 18, 2013

Geometry
Imagine a piece of square paper that measures 20 by 20 cm. You can make a box (with no lid) by cutting a square of the same size from each corner and folding up what's left to make a box. Keeping the lengths of each sides integers, what is the maximum volume box that can ...
December 5, 2013

Chemistry
If a student used an iron scoopula, instead of a plastic one, to add the unknown metal to the HCl solution, will it affect the calculated molar mass of the unknown metal? If so, how? Justify your answer with an explanation.
September 23, 2013

Chemistry
Can calcium hydroxide solution be used to distinguish Co(NO3)2 and Fe(NO3)3 solutions using only the titration technique? Justify your answer with an explanation.
September 23, 2013

math
Thank you.
September 16, 2013

math
George wants to build a square fence using 80 meters of wire. What is the area of the fence if you use all of the wire equally among each side?
September 16, 2013

Algebra I
The sum of two numbers is 15. Three times one of the numbers is 11 less than five times the other. Find the numbers. Please help. ^.^
September 9, 2013

Algebra I
Find a number that is 96 greater than its opposite.
September 9, 2013

algebra
determine the equation of the line through the points (8,2) and (-4,-1) Please explain and show work
May 23, 2013

Trigonometry
Given that sin alpha = 15/17 and -360 <alpha<360 find all values of alpha to two decimal places. Help Please!
May 18, 2013

HISTORY
Good point. Thank You.
May 14, 2013

HISTORY
Necessary for all the countries that took part. Like America, Germany, Great Britain
May 14, 2013

HISTORY
Was imperialism necessary in the 19th century?
May 14, 2013

Math
Factorise fully: 5pq + 10p
April 9, 2013

median and mode
What is the median of this set of numbers 85,48,75,36,55
April 4, 2013

physics
A student throws two beanbags in the air, one straight up and the other one at a 30° angle from the vertical. Both beanbags are thrown with the same initial velocity and from the same height. In your own words, explain which one will come back and hit the ground first and ...
March 11, 2013

Poetry??
Read the following excerpt from “and sometimes i hear this song in my head.” "and our tongues keep remembering the rhythm of the words we forgot swaying on the backs of buses and in hot kitchens crooning in pool halls and shared bathrooms yeah/we carving a ...
March 5, 2013

Physical Science Help!
Can someone please help me balance these equations? Thank you for your time!! 1. NO + O2 ¨ NO2 2. NH4Cl + Ca(OH)2 ¨ CaCl2 + NH3 + H2O
February 11, 2013

Complete the following table by replacing question marks with the correct numbers: (Note: Each horizontal row is a separate example, so in row #1, 175.32 grams of NaCl is how many moles of NaCl and how many molecules of NaCl does it contain?) Grams NaCl Moles NaCl # Molecules ...
February 5, 2013

Economics
Which of the following is a characteristic of a traditional economy? A. It encourages innovation and change. B. It is usually based on light industrial production. C. It has a high standard of living. D. It revolves around the family unit.
December 6, 2012

university physics
Derive absolute error in equations: 1)Derive absolute error in (e/m) e/m= 2V/B^2*R^2 2)Derive absolute error in B B=8uN(Inet)/square root 125a
November 21, 2012

university physics
A platinum resistance thermometer has resistances of 200.0 ohms when placed in a 0 degrees Celsius ice bath and 253.8 ohms when immersed in a crucible contacting melting potassium. What is the melting point of potassium? Hint: First determine the resistance of the platinum ...
November 20, 2012

physics, help! urgent!
A positive point charge q = +2.50 nC is located at x = 1.20 m and a negative charge of ƒ{2q = ƒ{5.00 nC is located at the origin. (a) Sketch the electric potential verses x for points on the x-axis in the range -1.50 m < x < 1.50 m. (b) Find a symbolic ...
November 14, 2012

physics, help!!
A metallic sphere initially has a net charge of +4.0 nC. A negatively-charged rod initially has a net charge of –6.0 nC. When the rod touches the sphere 8.2 x109 electrons are transferred to the sphere. What is the new net charge on the sphere?
November 9, 2012

physics
Three point charges, A=2.00 uC, B=7.00 uC, C=-4.00 uC, are located at the corners of an equilateral triangle. a) Find the magnitude and direction of the electric field position of the 2.00 uC charge. b) How would the eletric field be affected if the charge there were doubled. ...
November 7, 2012

english 11
example of situation irony in act iii of the crucible
October 19, 2012

algebra
f the principal P = \$500, the interest I = \$250, and the rate r = 10%, find the following. (a) What is the time?
September 3, 2012

Medical termanology
Give me a example of how to write the report.
August 19, 2012

Medical termanology
Write a fictitious medical report of about two paragraphs describing a dermatologic condition or disease. Focus the report on the onset,progression,location,and etiology of the condition or disease and the treatment parameters.
August 19, 2012

algebra
A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results are below. 36 said they drove alone. 31 rode in a carpool. 32 rode public transportation. 6 used both carpools and public transportation. 7 used both a carpool and sometimes ...
August 11, 2012

Math
out of these variables which would and would not follow normal distribution. shoe size height age GPA model year of car how many friends on face book Please explain why..thanks
June 9, 2012

track and field
lkggujjhvyjjmhmjhvhjcv
May 12, 2012

math
Write and solve the differential equation that models the verbal statement. Using k for the constant of proportionality The rate of change of N with respect to s is proportional to 626 − s. dN/ds= N=
April 30, 2012

government
According to the doctrine of judicial restraint, the judiciary should?
April 25, 2012

Alegbra
I am trying to factor, but I can't seem to get this one. The question is: -15d*2*-2d+8. It is actually -15d squared but I didn't know how to right that without it being confusing. Anyways I changed it so now it says -1(15d-2d+8). Then I drew a diagram using the factors...
April 24, 2012

Chemistry
What will be the effect on a chromatogram of two well separated peaks if: (this is for a gas chromatography) a) the carrier gas flow is set too high? b) the temperature of the injection port is set too low? c) the temperature of the column is set too high?
April 3, 2012

Chemistry
If the gas chromatograph is polar, and a mixture of a polar compound and a non-polar compound is injected. Which one of the two compounds will have a higher retention time? Why?
April 3, 2012

chemistry
What will be the effect on a chromatogram of two well separated peaks if: (this is for a gas chromatography) a) the carrier gas flow is set too high? b) the temperature of the injection port is set too low? c) the temperature of the column is set too high?
April 3, 2012

Geography
Can someone check these for me? 1.What problem has been at the heart of the intense political struggles in Central America? Unequal distribution of usable land is the heart of the political struggle. There is a shortage of farmland in order to meet the needs of everyone. ...
March 23, 2012

Chemistry
What is the balanced equation for the reaction of acetylsalicylic acid and sodium hydroxide?
March 20, 2012

Algebra 1
Write an equation of a line that passes through (-12, -14) with slope 6. A.y = 6x - 12 B.(y + 14) = 6(x + 12) C.(y + 12) = 14(x + 6) I've tried so many different ways to find this answer but can't. Please help me and please show me how you got it. I don't want you ...
March 13, 2012

English 1
1.Writers often communicate their themes by building clues into the story. Choose one story from Collection 4 and show how the author uses characterization, title choice, and key passages to develop the theme of the story. Use examples from the story, including quotes from the...
March 12, 2012

English 1 Literature
I understand what the question is asking for but I do not know exactly how to write it. Here is the question. The way a story is told and the voice that tells it are important parts of a story. Choose at least two stories from Collection 3. Analyze the role that the narrator ...
March 12, 2012

Chemistry
It is possible, although less accurate, to do a standard addition with only one sample. An unknown Fe sample was analyzed by AAS and gave an absorbance reading of 0.160. To the same sample we added 1.5ppm Fe and the new absorbance reading was 0.205. Calculate the ppm of the ...
March 5, 2012

chemistry
One purpose of adding KIO4 is to prevent the permanganate ion from being slowly reduced to Mn+2 by H2O. Write a balanced redox equation for the reduction of permanganate ion to Mn+2 by water in acid solution.
February 23, 2012

Chemistry
There is a large [Cr2O7]-2 absorbance observed at 360 nm. Why can this wavelength not be used instead of the smaller absorbance at 440 nm?
February 23, 2012

ChemistryDrBob222 could you please check this over
0.281g of Fe(NH4)2(SO4)2*6H2O is dissolved in a total volume of 500.0 mL of water, calculate the resulting Fe concentration in ppm. molar mass of Fe(NH4)2(SO4)2*6H2O = 392.14088g/mol molar mass of Fe = 55.845g/mol 0.281g * (1mol/392.14088g) = 7.165X10^-4 mol 7.165X10^-4 mol...
February 13, 2012

Algebra
Krystal grilled 21 burgers at a block party. She grilled the same number of pounds of turkey burgers as hamburgers. Each turkey burger weighed 1/4 pounds and each hamburger weighed 1/3 pound. How many of each did Krystal grill? ~Please help me and provide an explanation for ...
January 19, 2012

Krystal grilled 21 burgers at a block party. She grilled the same number of pounds of turkey burgers as hamburgers. Each turkey burger weighed 1/4 punds and each hamburger weighed 1/3 pound. How many of each did Krystal grill? ~Please help me and provide an explanation for ...
January 19, 2012

I NEED HELP :(
Okay thank you! I understand now!
January 18, 2012

I NEED HELP :(
Mr. Malone is putting money in two savings accounts. Account A started with \$200 and Account B started with \$300. Mr. Malone deposits \$15 in Account A and \$10 in Account B each month. In how many months will the accounts have the same balance? What will that balance be?
January 18, 2012

Algebra
Mr. Malone is putting money in two savings accounts. Account A started with \$200 and Account B started with \$300. Mr. Malone deposits \$15 in Account A and \$10 in Account B each moth. In how many months will the accounts have the same balance? What will that balance be?
January 18, 2012

Math
Mr. Malone is putting money in two savings accounts. Account A started with \$200 and Account B started with \$300. Mr. Malone deposits \$15 in Account A and \$10 in Account B each moth. In how many months will the accounts have the same balance? What will that balance be?
January 18, 2012

Math Homework
A car dealer carries out the following calculations. What is the annual percentage rate? (Round your answer to the nearest tenth.) List price \$ 5,368.00 Options \$ 1,625.00 Destination charges \$ 200.00 Subtotal \$ 7,193.00 Tax \$ 431.58 Less trade-in \$ 2,932.00 Amount to be ...
October 30, 2011

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