Saturday
March 25, 2017

# Posts by angie

Total # Posts: 1,405

physics
Thank you. I don't know why I was over looking that.
February 28, 2010

physics
If a particle of mass 5.7 kg is moving east at 10 m/s and a particle of mass 19 kg is moving west at 10 m/s, what is the velocity of the center of mass of the pair? Give answer is m/s to the west. I tired to use: Vcm = mv/M. I plugged in (5.7)(10) + (19)(10) / 5.7+19. = 57+190...
February 28, 2010

physics
A toy car with a mass of 120 g moves to the right with a speed of 0.56 m/s. A small child drops a 25.0-g piece of clay onto the car. The clay sticks to the car and the car continues to the right. What is the change in speed of the car? Consider the frictional force between the...
February 28, 2010

Math
Line L has equation of 4x + 3y = 7. Find equation of the line that is perpendicular to L which passes through the point of intersection of L and the y-axis. Give answer in the form ax + by +c = 0.
February 4, 2010

Physics
A block of mass m1 = 4.1 kg rests on a frictionless horizontal surface. A second block of mass m2 = 1.7 kg hangs from an ideal cord of negligible mass that runs over an ideal pulley and then is connected to the first block. The blocks are released from rest. (a) Find the ...
January 25, 2010

Physics
A skydiver, who weighs 682 N, is falling at a constant speed with his parachute open. Consider the apparatus that connects the parachute to the skydiver to be part of the parachute. The parachute pulls upward with a force of 669 N. (a) What is the force of the air resistance ...
January 25, 2010

How to figure out if a fraction is in its simplest form.
January 20, 2010

geometry
A 6-foot ladder touches the side of a building at a point 5 feet above the ground. At what height would a 15-foot ladder touch the building if it makes the same angle with the ground as the shorter ladder?
January 14, 2010

social studies
in the south, by 1863, what were the ages for conscription ?
January 13, 2010

social studies
the telephone company helped to employ women with the invention of what ?
January 13, 2010

AP Chemistry
Write the expression of for the base dissociation constant for hydrazine, N2H4, a weak base. Hydrazine reacts with water to form the N2H5+ ion.
January 11, 2010

AP Chemistry
Rank these compounds in order of increasing hyroxide ion concentration: weak base, weak acid, strong base, strong acid.
January 11, 2010

puritans
December 29, 2009

chemistry
. Do you think that determining the volumes of your cylindrical metal samples by measuring their dimensions and calculating would be more or less accurate than determining these volumes by water displacement?
December 1, 2009

AP Chemistry
Iron has a density of 7.86 g/cm3 and crystallines in a body-centered cubic lattice. Show that only 68% of a body-centered lattice is actually occupied by atoms, and determine the atomic radius of iron.
November 14, 2009

AP Chemistry
You are given a small bar of an unknown metal X. You find the density of the metal to be 10.5g/cm3. An x-ray diffraction experiment measures the edge of the face-centered cubic unit cell as 4.09 A. (1A=10^-10m) Identify X.
November 14, 2009

AP Chemistry
Why is HCI added on a drop-by-drop basis to ensure complete precipitation of Group 1 chlorides initially, rather than just added all at once? HCI forms a mixture of AgCI, PbCI2, Hg2CI2
November 12, 2009

AP Chemistry
I don't have one.
November 11, 2009

AP Chemistry
What is the specific solubilities (in g/100 g H2O) in both cold and hot water for AgCI, PbCI2, and Hg2CI2?
November 11, 2009

Physics
Why is it that when water is in a bucket and spinning around in a circular motion and then upside down the water in the bucket does not move or spill? Am not sure on what terms to use to explain why this happens
November 4, 2009

Media Law
Ok, thank you!
November 1, 2009

Media Law
November 1, 2009

Media Law
What are the reasonable limits in which the media should be allowed to cover governmental meetings in the media role of informing the electorate of the activities of government?
November 1, 2009

October 27, 2009

This is hard
October 25, 2009

college
how many molecules of h20 are present in 75.0g of h2o
October 20, 2009

Social Studies
My daughter is in the 5th grade and has to prepare a totem pole based on her family's history...I know how to make a totem pole, but how do you make one based on your family history?
October 18, 2009

Physics
I got the answer! Thank you! Can you help me with the second problem please?
October 16, 2009

Physics
A 61-kg person on skis is going down a hill sloped at 30¡Æ from the horizontal. The coefficient of friction between the skis and the snow is 0.16. What would be the magnitude of the acceleration? An crate weighing 576 N is resting on a plane inclined 29¡&...
October 16, 2009

Math
What does the representational form of a number mean? For example the representational form of the number 3758.
October 12, 2009

Communication Law Studies
Can democracy be established and function without assurances of freedom of speech and freedom of press?
September 14, 2009

English/Grammar
Can you tell me what the simple subject of this sentence: Several of the caves are open to the public. I say it is caves. My teacher said it was several. I thought that several would be the complete predicate. Can you help
September 10, 2009

math
during the winter bill blank has been quite concerned about the total number of gallons of home heatiang fuel he used. last winter he used 1505 7/8 gallons of oil. here is a summary of this years usage... dec. 525 1/4 jan.488 5/8 feb. 481 3/8 mar.255 1/3 is it more of less ...
September 7, 2009

statistics
a set of building blocks includes blocks of various shapes and colors. if 10% of the blocks are cubes, and 40% of the cube blocks are red, then what percentage of the blocks are red cubes
September 7, 2009

environmental management
Will gaseous ammonia at 132 degree C liquefy when 100 atmospheres of pressure is applied to it? Why or why not?
September 7, 2009

health
How might Michael’s or Jennifer’s situation illustrate adjustment? How might this situation become an opportunity for personal growth?
August 23, 2009

psy
3. How might Michael’s or Jennifer’s situation illustrate adjustment? How might this situation become an opportunity for personal growth?
August 22, 2009

Algebra
What is the numerical value of the equations below? Thank you! 24*e^(0.06*384)
August 8, 2009

Algebra
Thanks! So then the final answer is that (x)/(x^2-4) (x)/(x-2) (x+2) Standard form then this = y = 0?
August 5, 2009

Algebra
So does this mean that the horizontal asymptote for f(x) = (x)/(x^2 -4) Is not 0? A horizontal asymptote is the y-value approaches as x approaches } ‡. Does this include 0? y= 0 ???
August 5, 2009

Algebra
What is the value of the horizontal asymptote for f(x) = (x)/(x^2 -4) This is my question?
August 5, 2009

Algebra
What does this mean in words please? Thanks!
August 5, 2009

Algebra
I need the horizontal asymptote for f(x) = (x)/(x^2 -4) Can someone please show me. I already figured out that The y-intercept is 0. The vertical asymptotes are x = -2, x = 2 So now all i need is horizontal asymptote for f(x) = (x)/(x^2 -4)
August 5, 2009

Algebra
C(x) = x2 - 30x + 7000, find the number of units manufactured at a cost of \$8000
August 2, 2009

Algebra
Find all of the zeros of the polynomial function and state the multiplicity of each. f (x) = (x^2 – 16)^2 – 4 with multiplicity 2 and 4 with multiplicity 2 I think this is the ans for this equation. Anyone care to chime in? Thanks!
July 24, 2009

Games
is webkinz a safe site to play on, is it protected from viruses?
July 20, 2009

Communication Theory
In general? So does it depend on the group and what is going on within it?
July 20, 2009

Communication Theory
Do most groups make decisions that have no lasting effect upon the relationships of individuals within the group?
July 20, 2009

comm 220
Inthe 1941 speech Citizen Kane what are the arguments and counter arguments
July 18, 2009

Algebra
July 15, 2009

Algebra
Find a rational function that satisfies the given conditions. Answers may vary, but try to give the simplest answer possible: Vertical asymptotes x = -4, x = 5; x-intercept (-2, 0)
July 15, 2009

Math Fractions
What is the first step to adding multiple fractions (3) with differenct denominators?
July 8, 2009

Algebra
2 or 1 or 2 or -1? annaiiz ceballos said it is x=2 or x=1 its x=2 or x=-1
July 7, 2009

Algebra
I am still confused. Can someone please explain further and break this problem down cause I have 5 more like this one to do. Thank you!
July 7, 2009

Algebra
Solve the equation. Check all proposed solutions. Show work in solving and in checking. Root3-x = x-1
July 7, 2009

English
Please Proofread for Me. If you see any errors please state them. Witnessed a Wrong Incident People today, sometimes witness people during things wrong, but they refuse to tell. Many times, they do not tell because they do not want to hurt the person’s feelings, or lose ...
July 7, 2009

english comp
Are these sentences correct now? As he stands in the backyard, and howls, my husband's will yell,"Shut up!" Now he cannot get out;however, he still tries. We brought many things to keep him in the fence: two chain, two heavy-duty hooks, and a new collar. The ...
July 1, 2009

English Comp.
Are these sentences correct now? As he stands in the backyard, and howls, my husband's will yell,"Shut up!" Now he cannot get out;however, he still tries. We brought many things to keep him in the fence: two chain, two heavy-duty hooks, and a new collar. The ...
July 1, 2009

English Comp.
My dog Napoleon barks constantly. He is a blonde and white Bassett Hound; he is quite a valuable dog. He was born at my parent’s house. When he was born, he was the largest of the litter. Now, he is the smallest. As he stands in the back yard and howls, my husband’s ...
July 1, 2009

English Comp.
Punctuate the following sentences correctly.See did I do these sentences right. 1. My dog Napoleon barks constantly. 2. He is a blonde and white Bassett Hound; he is quite a valuable dog. 3. He was born at my parent’s house. 4. When he was born, he was the largest of the ...
July 1, 2009

Algebra
My mistake 4-(9) = -5 ? This is what I believe to be the correct answer
June 27, 2009

Algebra
Please Solve: 4-x=-5 I thought the answer was -9 but that doesn't seem to be it. Can someone please help? Thanks! This is what I have: 6. 4-x=-5 The problem to solve is: 4-x=-5 Subtract 4 from both sides x = -9 Then divie by -1 Would the answer be 9? To Check: 4- - 9 = -5
June 27, 2009

Math
So the 16 is not part of the answer? It's just 25 a^9?
June 25, 2009

Math
Please simplify: Very confused, have many problems like this and need some guidence. Thanks! (root5a^7/2)^4 a^3/a^8
June 25, 2009

Algebra
Thanks that is what I got to, so therefore A(x) = 60x – x^2 is the answer! Thanks for your help! :-)
June 22, 2009

Algebra
So would the answer be A(x) = 60x – x^2? Or A(x) = 120x – x2
June 22, 2009

Algebra
Suppose a farmer has 120 feet of fencing to make a rectangular barnyard enclosure. If the enclosure is x feet long, express the area A of the enclosure as a function of the length x.
June 22, 2009

Physics
Thanks- it makes sense, since i had to choose the closest to my answer.
June 20, 2009

Physics
The last stage in the fusion of hydrogen to form helium in the Sun involves the formation of an alpha particle (4He) from two 3He nuclei: 3He + 3He 4He + p + p The binding energy for 3He is 2.57 MeV per nucleon and that for 4He is 7.07 MeV per nucleon. Calculate the amount of ...
June 20, 2009

Math
Study the number pattern in the table below and complete 2^3 (0x3^2)+(3x2)+2 8 3^3 (1x4^2)+(3x3)+2 27 4^3 (2x5^2)+ (3x4)+2 64 5^3(3x6^2)+(3x5)+2 125 6^3 ? ? ? ? ? ? ? ? ? 10^3 ? ? ? Is the pattern 6^3 (4x7^2)+(3x6)+2 216 7^3 (5x8^2)+ (3x7)+2 343 8^3 (6x9^2)+ (3x8)+2 512 9^3 (...
June 19, 2009

math
There are 7 men on a bus. Each has 7 backpacks. Each backpack has 7 cats, each nursing 7 kittens, all on the bus. How many legs are on the bus? (This is not a trick question. The driver has stepped off to use the facilities; the cats should have. All animals and humans have ...
June 19, 2009

Mathematics
Study the number pattern in the table below and complete 2^3 (0x3^2)+(3x2)+2 8 3^3 (1x4^2)+(3x3)+2 27 4^3 (2x5^2)+ (3x4)+2 64 5^3(3x6^2)+(3x5)+2 125 6^3 ? ? ? ? ? ? ? ? ? 10^3 ? ? ? n^3 (n-2)x( )^2)+(3x )+2 n^3
June 19, 2009

Math
In ABC, angle C is a right angle. AC=15 and BC=13. Find the measure of angle B. Round answer to nearest tenth. I need to know what you're supposed to enter in a graphing calculator to get this.
June 19, 2009

Math
This rectangle represents a tabletop. Its measured length is 48.5 ft, and its measured width is 36.5 ft.The relative error of these measured dimensions is 0.04. What is the relative error when computing the area of the tabletop? a. 0.0082 b. 0.082 c. 0.82 d. 8.2 I think the ...
June 16, 2009

Science
Approximately what percentage of the estimated age of Earth does the Cenozoic Era represent and how do you know? look at pg. 9 in Earth Science Reference Tables? a. 1.4% b. 5.0% c. 11.9% d. 65.0%
June 15, 2009

Science
When 1 gram of liquid water at 0 degrees Celsius freezes to form ice, how many total calories of heat are lost by the water and how do you know? a. 1 b. 0.5 c. 80 d. 540
June 15, 2009

Science
What is different about the appearence of rocks with mineral alignment and rocks with banding?
June 15, 2009

Math
The formula N = 10(4') gives N, the number of bacteria present in a culture after t hours. How many hours does it take for the number of bacteria to grow to 2,560? a. 2 hours b. 3 hours c. 4 hours d. 5 hours The answer is c., but is there another way to find this answer ...
June 14, 2009

Math
If four coins are flipped at once, what is the probability that exactly 3 tails will come up? a. 1/16 b. 1/8 c. 1/4 d. 1/2 The answer is c, but what do you do to get that?
June 13, 2009

math
y^2-6y=-7 x^2=8x-41 (4x-1)(2x+6)=3x 45-t^2=0 (3x-6)^2=33
June 13, 2009

Math
thanks
June 10, 2009

Math
A movie theater recorded the number of tickets sold daily for a popular movie during the month of June. A box-and-whisker plot represents the number of tickets sold. minimum-100 maximum-8 1st quartile-300 median-400 3rd quartile-600 Which conclusion can be made using this plot...
June 10, 2009

Math
Do you have to reduce fractions to simplest from when finding probability, or can you just leave it?
June 9, 2009

Math
But in this part, "It says 110 take M and T, but we have already placed 20 of those 110, that leaves 90 to go into the region covered by M and S but NOT by T." why can't you put it in M and T, when that was what 110 is for?
June 9, 2009

Math
thank you!
June 9, 2009

Math
In a class of 550 students, students may take all, none, or a combination of courses as follows.? Draw a Venn diagram to find how many students are not in any of these courses. Mathematics-280 Science-200 Technology-230 Mathematics and Technology-110 Science and Technology-100...
June 9, 2009

French
thanks
June 8, 2009

French
In "le maïs", what is the two dots on top of the i called in english?
June 8, 2009

Syllables
thank you
June 7, 2009

Syllables
How many syllables are in chocolate? 2 or 3?
June 7, 2009

Math
thanks
June 4, 2009

Math
Is this: T= {x|x is an integer and x ¡Ý12} in roster form T={12,13,14,15,16,17...}?
June 4, 2009

Math
thanks
June 3, 2009

Math
When you solve questions like "The sum of 3 consecutive integers is 147. Find the integers." do you find consecutive even integers and consecutive odd integers the same way?
June 3, 2009

Math
thanks
June 3, 2009

Math
What's the time difference between 8:30 AM and 12:00 noon?
June 3, 2009

French
thanks
June 2, 2009

French
Why is it that when you say "Je joue au hockey" you can't use le hockey?
June 2, 2009

Science
that means it's c, right?
June 1, 2009

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