Sunday
April 20, 2014

Posts by Anna


Total # Posts: 1,882

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?

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 ...

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

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

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)

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...

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?

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...

English
Thank you, that helped a lot!

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

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?

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.

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

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

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

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?

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.

algebra 2
Solve for x: x=4+x divided by y-3

Reading
Was that fine

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

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 ...

Reading ASAP
You have to change the complete sentences to complex sentences

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.

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

Reading ASAP
Where do I put the thingy in above of which words

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 ...

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?

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

Math
The answer to 7 plus 4(8 minus 2)

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...

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

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?

history
i believe its B is it correct

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 ...

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

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?

history
i believe its anne bradstreet and william bradford is it correct

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

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

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 ov...

HISTORY
IS IT d?

HISTORY
IS IT d?

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

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 THI...

history
ARE THOSE CORRECT PLEASE CHECK

history
ACADB

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 move...

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?

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?

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?

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?

Science
i dunno....

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

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

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

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?

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

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?

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

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 ...

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 an...

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.

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 wa...

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

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

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

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...

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

Algebra
Divide and check: (3x^2-2x-13)divided by (x-2)

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.

algebra*
Multiply (x^10+3)(x^10-3)

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

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...

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

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...

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

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?

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 upw...

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.

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...

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

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?

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...

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...

Neoclassicism I english 11
yeah i need the answers too.

Accounting
I need help in working this problem...please help... Gaines Company recently initiated a post audit program. To motivate employees to take the program seriously, Gaines established a bonus program.Managers receive a bonus equal to 10 percent of the amount by which actual net p...

Accounting
I am trying to figure out how to do this problem: scenarios (projected $90,000 annual cash inflow vs. projected $70,000 annual cash inflow). Note, 5 years of $90,000 per year equals $450,000 of total cash received over the duration of the project ($350,000 for 2nd project). Bu...

math
The answer is 16 because when you use FIOL for (5x-4)(5x-4) you get 25x^2 -20x-20x+16.Then you simplify to 25x^2-40x+16 to your original problem with the answer of 16 in the problem. FIOL is multiplying... the FIRST term then INNER terms then OUTER terms finally your LAST terms.

math
The answer is 16 because when you use FIOL for (5x-4)(5x-4) you get 25x^2 -20x-20x+16.Then you simplify to 25x^2-40x+16 to your original problem with the answer of 16 in the problem. FIOL is multiplying... the FIRST term then INNER terms then OUTER terms finally your LAST terms.

math
The answer is 16 because when you use FIOL for (5x-4)(5x-4) you get 25x^2 -20x-20x+16.Then you simplify to 25x^2-40x+16 to your original problem with the answer of 16 in the problem. FIOL is multiplying... the FIRST term then INNER terms then OUTER terms finally your LAST terms.

physics
If a concave mirror with a radius of curvature of 0.93 m has an object placed at 0.37 m in front of it, what is the mirror's focal length? Round your answer to 3 decimal places.

physics
If a concave mirror with a radius of curvature of 0.93 m has an object placed at 0.37 m in front of it, what is the mirror's focal length? Round your answer to 3 decimal places.

Calc
Oh, I forgot all about L'Hospital's Rule. Thanks!

Calc
Find the limit as x approaches zero from the right of ((sqrt((1+x)/(x^2))-(1/x)) I don't even know where to start with this. Help? P.S. If you go to the wolfphram alpha website and put copy and paste ((sqrt((1+x)/(x^2))-(1/x)) into the search bar you can see what it looks ...

Maths B
Charlotte received a score of 68 on both her English and Maths tests. The mean for English was 52 and the mean for Maths was 55. The standard deviations for English and Maths were 10 and 8 respectively. In which subject did Charlotte perform better? Explain your decision.

Year 11 English
thanks alot!!!

Year 11 English
Imagine you are the director of Rabbit-Proof Fence. Using what you have learned so far, how would you instruct the camera operator to help you communicate: a) how the girls are feeling during their walk home? b) how vast and empty the landscape is within the same scene? (1 par...

chemistry HELP plz!
The answer is b. 31P

Maths B
i don't get what you mean. Can you please explain it to me again.

Maths B
Charlotte received a score of 68 on both her English and Maths tests. The mean for English was 52 and the mean for Maths was 55. The standard deviations for English and Maths were 10 and 8 respectively. In which subject did Charlotte perform better? Explain your decision.

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