Friday
February 12, 2016

Posts by Allie

Total # Posts: 324

physics
the equation that I think I need is P = P0 + ρgh where P is 1 atm and P0 is 1/3 atm but I get a height of 3.06 x10^-4 meters which seems like a vvery small amount
August 15, 2011

physics
suppose you were able to blow air out of your mouth at one third of an atmosphere pressure. How tall a column of water could your mouth air pressure push up a straw? I know atm pressure is 1 atm but I'm really confused about how to go about this problem. thanks!
August 15, 2011

math/physics
The ratio of the mass of your body (50 kg) to a dollar bill(1 gram) is? body: 50 kg= 50,000 g 50000/1 so the ratio is 50,000? (That seems like too much to me)
August 14, 2011

Physics
Clap your hands and estimate the energy and power released as sound waves. I know Kinetic energy= 1/2*m*v^2 and Power is KE/t but how do I find the velocity of the sound wave made from clapping my hands? and for the mass do I use the mass of my hands? thanks
August 13, 2011

mat
harvest cereal comes in boxes of different sizes.the regular box holds 7/8 pounds.the small box holds 2/3 as much. How much cereal does the small box hold?
May 2, 2011

physics
A skier of mass 72 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to pull him 65 m up a 30° slope (assumed frictionless) at a constant speed of 2.7 m/s? (b) What power must a motor have to perform this task?
March 20, 2011

chemistry
What is my theoretical yield of iron II chloride if I start with 34 grams of iron II bromide?
March 13, 2011

physics
Find the height from which you would have to drop a ball so that it would have a speed of 6.6 m/s just before it hits the ground.
March 11, 2011

physics
A projectile is launched with a speed of 41 m/s at an angle of 55° above the horizontal. Use conservation of energy to find the maximum height reached by the projectile during its flight.
March 11, 2011

physics
A sledge loaded with bricks has a total mass of 18.9 kg and is pulled at constant speed by a rope inclined at 19.3° above the horizontal. The sledge moves a distance of 19.8 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0...
March 9, 2011

physics
A child and sled with a combined mass of 50.0 kg slide down a frictionless slope. If the sled starts from rest and has a speed of 3.40 m/s at the bottom, what is the height of the hill?
March 9, 2011

physics
A daredevil on a motorcycle leaves the end of a ramp with a speed of 29.5 m/s as in the figure below. If his speed is 27.1 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance.
March 9, 2011

4th grade math
I dont know
March 7, 2011

heart
how long does it take to design, test, and get FDA approval of an artificial heart valve?
February 21, 2011

Relative Acidities
Rank the given compounds on their relative acidity. Here was the order I thought it was but it turned out to be wrong. (i based it based off of sp being most acidic and sp3 being least acidic) STRONGEST HC(triple bond)C-CH3 H2C=CH2 CH3NH2 H2O CH4--> WEAKEST and then I ...
February 16, 2011

ochem
list from strongest acid to weakest acid HC(triple bond)CCH3 H2C=CH2 H3CNH2 CH4 H2O i thought the order went HC(triple)CCH3 H3CNH2 H2O H2C=CH2 CH4 but it comes out as wrong and i dont know why >
February 14, 2011

Biology- DNA
What is needed to synthesize DNA? -a DNA strand -a primer and is that it?
February 7, 2011

Complex Numbers
Oh thank you so much i forgot that when you that the square root of a negative you get the complex #
January 31, 2011

Complex Numbers
How do I go about finding the solutions to the following x^2-6x+25=0 I know the answer is 3-4i and 3+4i however, I do not know how to go about finding the these solutions Thanks :)
January 31, 2011

Math
of the 43 presidents 15 were elected to 2 terms. what fraction of us presidents were elected two terms? HELP! I have been at this one for over two hours and I can't come up with the answer.
January 9, 2011

bio
according to Stephens, when are learning behaviors expected to evolve?
December 17, 2010

math
find the slope and y-intercept of the line in the given equation: y=6/7x-4
December 16, 2010

math
Thank you.
December 16, 2010

math
Given the linear equation y=-3/2x+1, find the y-coordinates of the points (-4), (-2), and (6). Please show all of your work. Plot those points and graph the linear equation.
December 16, 2010

bio
What is the grandmother effect in humans? what is the grandfather effect?
December 15, 2010

bio
what is the sociobiology controbersy?
December 15, 2010

Calculus
What's the practical domain and range of this volume function: 4x^3-39x^2+93.5x
December 15, 2010

math
solve v=(1/3)t+12
December 12, 2010

bio
what is prey flushing?
December 9, 2010

bio
what is the edge effect? (as part of group living)
December 9, 2010

science- chemistry
How much energy in kilojoules is needed to heat 5.00 g of ice from -10.0 C to 30.0 C ?
December 7, 2010

Spanish 1
Use the cues below to write sentences with the verb GUSTAR. MODELO: comida italiana/Vilma = A Vilma le gusta la comida italiana. 1) quien/los animales 3) quienes/la musica
November 29, 2010

Spanish 1
A spanish exchange student is trying to figure out what his friends like to eat. Provide the correct pronoun forms to complete his sentences below.: ____ gusta la comida china. A Patricia y a Juan ____ gusta la comida mexicana. ¿A vosotros ____ gusta la comida italian? ...
November 29, 2010

bio
what is an example of a naturally fragmented habitat, and a habitat that has been fragmented by human land use?
November 29, 2010

ecology
what is the atlantic pahtway? and why does its path through upstate New York raise special conservation concerns for woodlands and wetlands on the south side of Lake Ontario?
November 29, 2010

math
3a+8=15-(9a-9)
November 3, 2010

world history
I was wondering how to spell Ida Peeiffer I mean like this lady couldn't even find it on the internet how crazy is that.
November 1, 2010

math
Use Descarte's rule of signs to discuss the possibilities for the roots of the equation. Do not solve the equation -5r^(4)+6r^(3)+9r-15=0
October 26, 2010

math
Use the rational zero theorem, Descartes rule of signs, and the theorem on bounds as aids in finding all real and imaginary roots to the following equation: 4x^(3)-17x^(2)+16=0
October 25, 2010

math
solve the equation for all real and imaginary solutions (x-3/2)^2-2(x-3/2)+26=0
October 21, 2010

math
Find all real solutions: sqrt(x+10)+ sqrt(x-1)=11
October 21, 2010

chemistry
If the decomposition of 3.785 g iron (III) chloride yields 1.302 g iron and 2.483 g chlorine, how many grams of iron and chlorine are produced when 2.175 g iron (III) chloride decomposes?
September 29, 2010

Math, I have partial answer..
Find the vertex for f(X)=-x^2+8x+6 I came up with (4,22)but i'm not sure. If so, what is the line of symmetry?
September 24, 2010

word problem
Thank you, Ms. Sue....I had the right concept but was stuck in the last part... Allie
September 24, 2010

Math word problem
The hypotenuse of a right triangle is 22 m long. The length of one leg is 10 m less than the other. Find the lengths of the legs. I have so far let one leg be x the other leg will be x-10 x^2 +(x-10)^2=22^2 x^2+x^2-20x+100=484
September 24, 2010

health
What are the ethicl considerations in obtaining a persons DNA?
September 21, 2010

Math, plz help
How do I write a quadratic equation having the given numbers as solutions of -9 and 3
September 17, 2010

Math
This question is in my FLVS test.... and i have NO idea. O_O"
August 20, 2010

Chemistry
The reaction below shows the corrosion process of iron. Calculate E°cell for the corrosion process and state whether you would predict that this is a spontaneous or nonspontaneous process. 2 Fe (s) + O2 (g) + 4 H+ (aq) → 2 Fe2+ (aq) + 2 H2O (l)
August 8, 2010

Chemistry
Calculate ΔG at 298 K for the electrochemical cell consisting of Au metal in a 0.00500 M Au(NO3)3 solution and Cu metal in a 0.950 M Cu(NO3)2 solution.
August 8, 2010

Critical Thinking 205
Thank you I didn't ask the question right. Which one of the 3 is the best?
May 8, 2010

Critical Thinking 205
which one of these make an argument the best? Which one of these is the weakest? Or how are the terms used in arguments? Here are the terms - Valid/ Invalid, -Sound/ Unsound, -Strong/ Weak
May 8, 2010

chemistry
how much heat dows a 23.0g ice cube absorb as its temp increases from -17.4deg C to 0.0deg C?
April 29, 2010

AP Chemistry
I came up with 6.67 x 10^-3 g solute/ 100g solvent. Based on the information in the problem, does this seem about right?
April 21, 2010

AP Chemistry
The question asked... Calculate the solubility of calcium sulfate in grams solute per 100 grams solvent. Assume that the volume occupied by the solute in the solution in negligibly small. I solved and got 4.9 x 10 ^-3 mol/L... how do I put this in grams solute per 100 grams ...
April 21, 2010

Math
Answer to question 2 about credit card debt in the US is RIGHT SKEWED.
April 15, 2010

Math
a ladder 10 ft long rests against a vertical wal. if the bottom of the ladder slides away from the wall at a rate of 0.7 ft/s, how fast&...
March 29, 2010

chemistry
Assume you are performing the calibration step of Experiment 8 and you begin with 50 g of water at 20 oC and 50 g of water at 80 oC. After adding the two portions of water into your calorimeter setup and following the procedure outlined in the experiment, you determine the ...
March 10, 2010

chemistry
The boiling point of diethyl ether CH3CH2OCH2CH3 is 34.500C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in diethyl ether is cholesterol . How many grams of cholesterol, C27H46O (386.6 g/mol), must be dissolved in 263.0 grams of diethyl ether to raise the ...
January 31, 2010

chemistry
The boiling point of diethyl ether CH3CH2OCH2CH3 is 34.500C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in diethyl ether is cholesterol . How many grams of cholesterol, C27H46O (386.6 g/mol), must be dissolved in 263.0 grams of diethyl ether to raise the ...
January 31, 2010

physics
A mass is hung from a beam of weight 2.0 N and length 81 cm. The tension and angle of the cable supporting the beam is 5.0 N at an angle of 40° from the horizontal. Using torques produced calculate the value of the unknown mass.
November 24, 2009

Chemistry
About twenty radioisotopes with ultra-long half-lives, from 82 million years (244- Plutonium) to 6 million billion years (50-Vanadium) are found in the earth’s crust, yet no radioisotopes with half-lives less than 70 million years (146- Samarium) are found. Why not? Use ...
November 16, 2009

chemistry
Assume that the aluminum atoms can be represented as spheres, as shown in the drawing (Part C figure) . If each Al atom has a radius of 1.43 angstroms, what is the length of a side of the unit cell?
October 20, 2009

History
After the Treaty of Paris, what policy changes did Britain make for the colonies?
September 2, 2009

math
Find the slope, x-intercept, and y-intercept for the line 9 x + 10 y + 16 = 0 I found y to be -1.6, the slope to be -.9 and x to be wither 0/9 or -16 but it said i got x wrong
September 1, 2009

science
a person who deals with the atmosphere and its phenomena, including weather and climate.
September 1, 2009

math
1. The equation, in general form, of the line that passes through the point (3,4) and is perpendicular to the line 5 x + 5 y + 9 = 0 is Ax + By + C = 0, where a=? b=? c=? 2.The equation of the line that goes through the points ( -9 ,-6 ) and ( -6 ,-3 ) can be written in ...
August 30, 2009

physics
omg i had the same question jason says your right he found the answer in the text book
June 3, 2009

Reimbursement Methodologies
You're the new director of a hospital health information management department. The chief financial officer has hired you for your expertise in health care reimbursement and needs to know how your department can help with reimburement. List the mot impotant functions of ...
May 25, 2009

reading
brother is to mother as fly is to
May 12, 2009

Types of Business writing
write an email of 6-10 sentences based on the scenario described here. Your boss has asked you to set up a meeting with a client for next week thursday. He wants to meet at the Miami Beach resort on Collins ave. He is taking along an assistant manager to share his ideas for ...
April 10, 2009

math
810,000
March 25, 2009

Rounding (math)
780,000
March 25, 2009

algebra
Reduce to lowest terms 3x-6/x^2-4x+4 perform operation w^2-1/(w-1)2 times w-1/w^2+2w+1 Find LCD and convert rational express. to equivalent rat. exp. with LCD as the denominator: 4/a-6 , 5/6-a
February 2, 2009

social studies
how old was john adams when he first went to school a)4 b)5 c)6 d)7
January 8, 2009

socail studies
ok this is the question jefferson believed that the creation of a national bank was a)unconstitutional b)faction c)democratic republicans d)federalist
January 7, 2009

socail studies
how old was john adams when he first went to school
January 7, 2009

socal studies
what was hamilton and his supporters called
January 7, 2009

pre-calc
what does this simplify to: f(x)=x/(x+4)^(1/5)-2
January 4, 2009

pre-calc
how would you solve x^(5/2)(x^(1/2)- 1/x^(1/2))
November 20, 2008

pre-calc
how would you solve 3/(x+2) - 6/3x = 6/(3x+6) algebraically and graphically?
November 20, 2008

pre-calc
the sum of the two squares of two consecutive even integers is 1,648. what are the integers?
November 18, 2008

math
did Rene Descartes make any other contrbutions besides the coordinate grid
September 27, 2008

reading 4th grade
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August 11, 2008

science
does DNAse cleave DNA at a steady rate (linear relationship) or is it some sort of exponential thing?
April 9, 2008

science
anyone??
April 9, 2008

science
wehat is the difference between RNA and DNA that allows them to be separated?
April 9, 2008

science data
What is the theory of differentials?
April 8, 2008

science data
What is the difference between an interpolated point and an extrapolated point? What assumption is interpolation and extrapolation based on? Which technique is more prone to error?
April 8, 2008

mathematics
What is the difference between an interpolated point and an extrapolated point? What assumption is interpolation and extrapolation based on? Which technique is more prone to error?
April 8, 2008

social studies
What are Inida's main products in India?
March 20, 2008

Chemistry
A sample of 25.00 mL of vinegar is titrated with a standard 1.02 M NaOH solution. It was found that a volume of 19.60 mL of the standard NaOH solution is used to completely neutralize the acetic acid in the solution. Calculate the concentration of the acetic acid solution.
March 9, 2008

Chemistry
A volume of 25.0 mL of 8.0 M acetic acid is diluted with sufficient water to prepare 1.00 liter of solution. What is the concentration of the diluted solution?
March 9, 2008

Chemistry
Calculate the amount (in grams) of AgNO3 needed to prepare 250.0 mL of 0.25 M of AgNO3.
March 9, 2008

Chemistry
Calculate the number of mol of NaOH in 25.5 mL of 1.08 M of NaOH.
March 9, 2008

Chemistry
The equation for respiration reaction is given by: C6H12O6 + 6O2 ------> 6CO2 + 6H2O + Energy Calculate the amount of water formed from oxidizing 18.0 grams of glucose in the presence of excess oxygen.
March 9, 2008

Chemistry
Antacid neutralizes stomach acid by the following reaction: Mg(OH)2 + 2HCl -----> MgCl2 + 2H2O Calculate the amount of Mg(OH)2 (in grams) needed to neutralize 2.5 grams of HCl.
March 9, 2008

To Kill A MockingBird
i know this is kind of late but an irony in the book is when Aunt Alexandra and her missionary circle are trying to help the "Mrunas". They are helping black people, but not helping the ones in their own town...
March 4, 2008

religion
What is JUdaisms followers?
March 3, 2008

Math
8u64
February 21, 2008

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