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October 20, 2014

Posts by anna


Total # Posts: 1,992

Fractions
thank you
November 12, 2012

Fractions
A technician has prepared three solutions from a 600 mL stock solution. • In preparing the first solution ½ of the original volume of the stock solution was used. • The second solution required ¼ of the remaining stock solution. • Preparation of ...
November 12, 2012

Math
Thank you
November 12, 2012

Math
I have the fraction 1/6. I need to express it as a decimal, fraction expressed with denominator 100 and percentage. Is it correct to have 0.16666; 16.66/100 and 16.66%?
November 12, 2012

Math - urgent
thank you
November 12, 2012

Math - urgent
2. A technician has prepared three solutions from a 600 mL stock solution. • In preparing the first solution ½ of the original volume of the stock solution was used. • The second solution required ¼ of the remaining stock solution. • Preparation of...
November 12, 2012

Cultral Diversity
1.Reserch about the impact of cultral valueson peer social interaction in an early education classroom may lead one to conclude that this enviroment may create biases if the primary social orientation favors:a teacher centered learning b.individual activities c.non- maintream ...
November 11, 2012

Cultual Diversity
1.A mother's eventual submission to her young child's repquests for the toy matchbox car in the hobby shop is representative of the ______ parenting style. a. laissez faire b.authoritarian c.Victorian d. democratic 2.A Native American child spent 30 minutes watching, ...
November 11, 2012

chem 11
a gas has an empirical formula C6H7O5. When put in a 50mL bulb at 120 degrees celcius and 120kPa (pressure) it's mass is determined: the mass is 10.37 times as much as C6H6O. What is the molecular formula of the gas (C6H7O5)?
November 5, 2012

Chemistry 11
a gas has an empirical formula C6H7O5. When put in a 50mL bulb at 120 degrees celcius and 120kPa (pressure) it's mass is determined: the mass is 10.37 times as much as C6H6O. What is the molecular formula of the gas (C6H7O5)?
November 5, 2012

Calculus
At a given moment, a plane passes directly above a radar station at an altitude of 7 miles. (a) If the plane's speed is 400 mph, how fast is the distance between the plane and the station changing half an hour later? (b) How fast is the distance between the plane and the ...
November 4, 2012

chemistry 11
if I was asked to set up a procedure that will allow me to check the concentration of aqueous Co2+ ions in a reaction vessel every 15 mintues, what could I do to quickly and accurately determine the concentration of colbalt ions in the solution?
November 4, 2012

Culturally Diverse Background
Will someone check my answers. 1.During a class fingerpainting activity,Doresha appeared perplexed by the teacher's question, What are you doing, Doresha did not respond quickly or with ease. Why did Doresha respond to this eventcast the way she did? a. Doresha is from a ...
November 4, 2012

chemistry 11
if a solution is contanimated with a chemical that causes a larger amount of solid, opaque particles floating in the solution, would the absorbance read too high or too low, and why?
November 3, 2012

Physics
Traveling at a speed of 15.9 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.700. What is the speed of the automobile after 2.00 s have elapsed? Ignore the effects of ...
October 30, 2012

CHEMISTRY! NEED HELP FAST!
i can't find the answer can u show me how to do the work step by step and tell me the answer my homework is due tomorrow
October 29, 2012

English
Contain some national and international news , but focus on news relating to specific area of the country. hhat type of newspaper is this ?
October 28, 2012

Physics HELP!
An airplane flies due north at 240 km/h with respect to the air. There is a wind blowing at 75 km/h to the northeast with respect to the ground. What are the plane's speed and direction with respect to the ground? __?__km/h __?__° east of north
October 25, 2012

Physics!!! HELP
An object in equilibrium has three forces exerted on it. A 36 N force acts at 90° from the x axis and a 42 N force acts at 60°. What are the magnitude and direction of the third force? __?__N __?__° (counterclockwise from the +x direction)
October 25, 2012

Physics!
Two ropes pull on a ring. One exerts a 57 N force at 30.0°, the other a 57 N force at 60.0° (a) What is the net force on the ring? Magnitude __?__N Direction __?__° (b) What are the magnitude and direction of the force that would cause the ring to be in equilibrium...
October 25, 2012

Physics URGENT! PLEASE
An object in equilibrium has three forces exerted on it. A 36 N force acts at 90° from the x axis and a 42 N force acts at 60°. What are the magnitude and direction of the third force?
October 25, 2012

AP Physics
A 45 kg gymnast steps off a platform located 1.3 m above a spring board. The spring board compresses 25 cm. a)What is the spring constant of the spring board? b) If energy is in fact conserved in this problem, explain how high the gymnast will spring upward. Assume the gymnast...
October 21, 2012

English
Thank you, that helped a lot!
October 21, 2012

English
In "The people could fly" what opposing forces struggle against eachother. And what is the main conflict in the story?
October 21, 2012

Science
You know that a gas in a sealed container has a pressure of 111kPa at 23 Celsius. What will the pressure be if the temperature rises to 475 Celsius?
October 18, 2012

Early Child Care
All of the following statements about the brain are correct EXCEPT: A) the brain is strongly run by patterns rather than facts. B) the brain runs better when food intake is irregular. C) stress and threat effect the brain in many ways. D) all learning is mind-body.
October 16, 2012

Early Child Care
the ability to put an object or group of objects in a logical series based on a property of those objects is: A) seriation B) phonemic awareness C) classification D) attribution
October 15, 2012

math
when enlargeing sn object, why does the area increase diffrently than the preminter?
October 15, 2012

physics URGENT! PLEASE
Figure the resultant velocity of a plane that is traveling at 300 km/hr @ 190 degrees when he encounters the wind below a) 30 km/hr tailwind b) 40 km/hr headwind c) 50 km/hr wind blowing south
October 15, 2012

Physics
A motor boat heads west across a river as a current of 12 km/hr. The speedometer reads a constant of 26 km/hr. What is the resultant velocity of the boat as compared to its original path? And what is the degree?
October 15, 2012

Physical Science
A 100 kg sample of a metal is cooled from 100°C to 20°C by removing 20 kcal of heat. Calculate the specific heat capacity of the metal.
October 12, 2012

algebra 2
Solve for x: x=4+x divided by y-3
October 11, 2012

Reading
Was that fine
October 10, 2012

Reading
2. In a way that you didn't mean, people can interpret things
October 10, 2012

Reading
Changing sentences to COMPLEXS sentences. 1. The drought caused deprivation of food and clean water in the town 2. Many people can interpret things in a way that you didn't mean 3. The book on Ancient Greece gave me some insight as to what their life was like. 4. The part ...
October 10, 2012

Reading ASAP
You have to change the complete sentences to complex sentences
October 10, 2012

Reading ASAP
Changing sentences for complex sentences 1.The stray cat took refuge in an old cardboard box to keep warm. 2. Some students find it difficult to make the transition to a new school 3. Jesus suffered from persecution due to his religious beliefs.
October 10, 2012

history
how important were federal policies for the expansion of the industrial economy between 1865 and 1900
October 8, 2012

Reading ASAP
Where do I put the thingy in above of which words
October 8, 2012

Reading ASAP
Underline each variable IV ABOVE THE INDEPENDENT VARIABLE DV ABOVE THE DEPENDANT VARIABLE 1.How will Product x affect the life if cut flowers. 2.What is the effect of different amounts of oxygen on the rate of yeast growth. 3.Does the number of bees affect the amount of honey ...
October 8, 2012

Chemistry
Zinc reacts with hydrochloric acid according to the reaction equation: Zn(s)+2HCl(aq)->ZnCl2(aq)+H2(g) How many milliliters of 4.50M HCl1(aq) are required to react with 8.25g of an ore containing 30.0% Zn(s) by mass?
October 7, 2012

fractions 7th grade
37.5 minutes
October 7, 2012

7th grade Math quick help Ms. Sue
This is the math unit test at connections academy. you should be ashamed.
October 3, 2012

Math
The answer to 7 plus 4(8 minus 2)
September 25, 2012

physics
Two beetles run across flat sand, starting at the same point. Beetle 1 runs 0.42 m due east, then 0.72 m at 32o north of due east. Beetle 2 also makes two runs; the first is 1.48 m at 47o east of due north. What must be the magnitude of its second run if it is to end up at the...
September 24, 2012

Physics
At what distance from the earth's surface with a mass of 5.0kg be just 45.0N in weight. HELP
September 23, 2012

Math
the height of a rocket with an upward speed of 1000m/s is expressed as h=1000t-4.9t^2. what is the hight of the rocket after 8 seconds?
September 20, 2012

history
i believe its B is it correct
September 19, 2012

history
The statement below represents which genre from the early American and Colonial period? I want to explain origins of the natural world and its processes. (1 point) the poetry of Anne Bradstreet the oral tradition of Native Americans the journals of William Bradford the essays ...
September 19, 2012

history
Thomas Jefferson and Thomas Paine shared a similar purpose for writing. What was their purpose? (1 point) to express and reflect to persuade to inform to invite
September 19, 2012

Chemistry
The bromine content of the ocean is about 65 grams of bromine per million grams of sea water. How many cubic meters of ocean must be processed to recover 1.0 pounds of bromine if the density of sea water is 1.0 x 103 kg/m3?
September 19, 2012

history
i believe its anne bradstreet and william bradford is it correct
September 19, 2012

history
Which of the following authors wrote in the same genre? Anne Bradstreet William Bradford Olaudah Equiano Thomas Jefferson
September 19, 2012

HISTORY
William Bradford wrote Of Plymouth Plantation and A "To My Dear and Loving Wife." B The Day of Doom. C The Voyage of the Mayflower. D The Mayflower Compact. I THINK ITS C OR D BUT IM PRETTY CONFUSED. PLEASE HELP , IF I WERE TO PICK ID PICK C
September 19, 2012

SUBJECT
Which of the following statements about literary movements is NOT true? A A literary movement is a period that shares a particular set of ideas, concerns, or characteristics. B Ideas, concerns, or characteristics may be shared by literary movements. C Literary movements may ...
September 19, 2012

HISTORY
IS IT d?
September 19, 2012

HISTORY
IM SORRRY B-all men are created equal C - these Colonies are, and of right ought to be, free and independent states D-we the people of the United States
September 19, 2012

HISTORY
Which of the following phrases does NOT appear in the Declaration of Independence? ( A life, liberty, and the pursuit of happiness B all men are created equal C these Colonies are, and of right ought D to be, free and independent states we the people of the United States I ...
September 19, 2012

history
ARE THOSE CORRECT PLEASE CHECK
September 19, 2012

history
ACADB
September 19, 2012

history
1-Which of the following statements about literary movements is NOT true? (1 point) A A literary movement is a period that shares a particular set of ideas, concerns, or characteristics. B Ideas, concerns, or characteristics may be shared by literary movements. C Literary ...
September 19, 2012

Physics AP
A ball is thrown straight upward with a speed of +12 m/s. A) what's the ball's acceleration just after it is thrown? B) how much time does it take for the ball to rise to its maximum height? C) what's the approximate maximum height the ball reaches?
September 15, 2012

physics
What is the magnitude of the electrostatic force that the two protons inside the nucleus of a helium atom exert on each other? Why do atomic nuclei not simply explode?
September 12, 2012

physics
If we wanted a block of iron of mass 3.25 kg to acquire a positive charge of 0.100 C, what fraction of the electrons would we have to remove?
September 12, 2012

physics
Consider a battery that has Vt = 12.0 V when it is not connected to a circuit. When a 10.0- resistor is connected with the battery, the potential difference across the battery’s terminals drops to 10.9 V. What is the internal resistance of the battery?
September 12, 2012

Science
i dunno....
September 11, 2012

math
the second largest six-digit number in which no digit appears more than three times
September 9, 2012

science
Lithium fluoride has a Ksp of 1.84 x 10-3. If 1.5 g are dissolved, what will be the percent ionization?
September 7, 2012

chemistry
if 14.7g of na reacts with 7.9g og br how many grams of nabr are found
September 3, 2012

Physics
An object is thrown upwards at an initial speed of 19.6 m/s from a height of 65m. Determine how long will take for the object to reach the ground (time of flight). what formula should i use?
August 29, 2012

Math
When dealing with linear equations, what does consistent, inconsistent, dependent, and independent mean? I'm so confused!
August 23, 2012

math
shoshanna is going to use 12 base ten blocks to model the largest possible number less than 999.Then she will use another 12 blocks to model the smallest possible number less than 999.what are the 2 numbers?
August 20, 2012

math
trying to solve fraction problem 2/3+3m/5=31/15 been too long....
August 18, 2012

Physics
Car A is moving at a constant speed of 10.0 m/s and passes Car B which is at rest. 10 seconds after, the latter follows with an acceleration of 0.5 m/s2. Determine the distance that the latter has to travel before it overtakes the former. does it require quadratic formula? Oh ...
August 12, 2012

Chemistry
What will happen when 100 ml of diethyl ether are added to 100 ml of water and thoroughly mixed? a.) Water will form a separate layer on top of the ether layer. b.)The temperature of the mixture will significantly increase. c.)There will be a chemical reaction between ether ...
August 12, 2012

chemistry
Suppose a student started with 135 mg of trans-cinnamic acid and 0.52 mL of a 10% (v/v) bromime solution, and after the reaction and workup, ended up with 0.202 g of brominated product. Calculate the student's theoretical and percent yields.
August 12, 2012

math
Question: why is it not 2/9? Since I know 1 squared will be 1, which ends in 1, but what about 9? 9 squared is 81, it ends in 1. So that makes 2/9 = 0.22 @MathMate
August 11, 2012

math
Question: why is it not 2/9? Since I know 1 squared will be 1, which ends in 1, but what about 9? 9 squared is 81, it ends in 1. So that makes 2/9 = 0.22
August 11, 2012

Math
I have this question for summer homework: "Mary's quiz scores were 92, 85, 78, 71, 77, and 80. She says she had an average of 92 for her quiz scores. Which term best describes her average score? a. mean b. median c. mode d. range" I calculated the mean, and it ...
July 26, 2012

Algebra*
Short Answer. Find the following quotient: x^2-36/x+6
July 26, 2012

Algebra*
Short Answer. Find the following product: (x+7)^2
July 26, 2012

Algebra*
Short Answer. Find the following product: -3z(-z^2-9)
July 26, 2012

chemistry
SciMann Best Answer - Chosen by Voters Let UNITs guide you; always USE THEM in your calculation to prevent errors moles of Na in samp = 0.78 g/ atwt Na = ?? x moles NaBr * MW NaBr + (moles Na - x moles NaBr) * MW NaCl = 2.01 g x moles NaBr = [2.01 g - moles Na * MW NaCl] / [MW...
July 26, 2012

algebra*
Find the following product: -9x^5y(-5x^4y^6) A)-14x^9y^7 B)45x^9y^7 C)-9x^5y-5x^4y^6 D)45x^20y^6
July 26, 2012

Algebra
Divide and check: (3x^2-2x-13)divided by (x-2)
July 24, 2012

algebra
Lunc Capacity: The polynomial 0.041h-0.018A-2.69 can be used to estimate the lung capacity, in liters of a female find the lung capacity of a 40-year old woman who is 165 cm tall.
July 24, 2012

algebra*
Multiply (x^10+3)(x^10-3)
July 24, 2012

algebra
Short Answer. Add the following polynomials. (4x^2-3x+2)+(5x^3-7x^2-9)
July 21, 2012

algebra
Solve. Leave the answers in terms of pi ?. a)Find a polynomial for the sum of the areas of the circles shown in the figure. b)Find the sum of the areas when r = 5 and r = 11.3. this is what I got but I did not do it right. I needed to To write an expression for the sum, i need...
July 21, 2012

algebra
find a polynomial for the shaded area of each figure. (21t+8)(4t)-(3t-4)(2t) I did this problem incorrectly!
July 21, 2012

algebra
Solve. Leave the answers in terms of pi ?. a)Find a polynomial for the sum of the areas of the circles shown in the figure. b)Find the sum of the areas when r = 5 and r = 11.3. this is what I got but I did not do it right. I needed to To write an expression for the sum, i need...
July 20, 2012

Statistics
Find the probability of at least one match. n = 62 How do I figure out r?
July 6, 2012

Physics
I'm having trouble following this. How do you go from: GM/4R - GM/R = -GM/(R + h) to 3/4R = 1/(R+h) to h=R/3?
June 28, 2012

Physics
Eris, the largest dwarf planet known in the Solar System, has a radius R = 1200 km and an acceleration due to gravity on its surface of magnitude g = 0.77 m/s2. (a) Use these numbers to calculate the escape speed from the surface of Eris. (b) If an object is fired directly ...
June 28, 2012

calculus
(SIN^8X-5 SIN^5X+SINX)COSX DX I need the answer to this, because I have tried so many times and cannot figure it out.
June 28, 2012

Physics
The Moon causes tides because the gravitational force it exerts differs between the side of the Earth nearest the Moon and that farthest from the Moon. Find the difference in the accelerations toward the Moon of objects on the nearest and farthest sides of the Earth. (The mass...
June 26, 2012

College Essay
Thanks! I will try to elaborate more why this experience is special to me in my conclusion...
June 18, 2012

College Essay
Well one of the options for the Common App is to: Evaluate a significant experience, achievement, risk you have taken, or ethical dilemma you have faced and its impact on you. So do you think this would be acceptable as my "significant experience", or is it too strange?
June 18, 2012

College Essay
One seemingly normal day in junior year, my friend and I were taking a train together home from school. We were on an extremely crowded F train headed for Queens. Packed against the door that separated one train car from another, overly warm and squished with no pole nearby to...
June 18, 2012

physics
I would tell you the steps I've taken so far but I have no idea where to even start. Any help is appreciated! Thanks! A uniform 33.5-kg beam of length = 4.15 m is supported by a vertical rope located d = 1.20 m from its left end as in the figure below. The right end of the...
June 16, 2012

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