Tuesday
March 3, 2015

Posts by Anne


Total # Posts: 630

Physics
Suppose you are standing in the aisle of a bus traveling along a straight road at 100km/h, and you hold a pencil still above your head. Then relative to the bus, the velocity of the pencil is 0km/h, and relative to the road, the pencil has a horizontal velocity of? a. less ...
November 10, 2010

Physics
As you approach the I-90 exit in your uncle's little red sports car convertible, you happen to notice a cat crossing the road. Not that you have any particular love of cats (especially this one, whose snooty disposition seems to beckon for a game of chicken), but you ...
November 1, 2010

Chemistry
find the reaction quotient: partial pressures are: p of N2=.903, P of H2=.888, P of NH3=.025
October 31, 2010

Chemistry
find the reaction quotient: partial pressures are: p of N2=.903, P of H2=.888, P of NH3=.025
October 31, 2010

physics.
Sound with a frequency of 261.6Hz travels through water at a speed of 1435m/s.
October 25, 2010

geography
how thick is the bedrock in the inetrior plains and why is it so thick
October 24, 2010

college
When I was considering what to do with my $10,000 Lottery winnings, my broker suggested I invest half of it in gold, the value of which was growing by 12% per year, and the other half in CDs, which were yielding 5% per year, compounded every 6 months. Assuming that these rates...
October 20, 2010

Math 1320
When I was considering what to do with my $10,000 Lottery winnings, my broker suggested I invest half of it in gold, the value of which was growing by 12% per year, and the other half in CDs, which were yielding 5% per year, compounded every 6 months. Assuming that these rates...
October 20, 2010

physics
My answer for this question A 11.0 kg box is released on a 37 degreesincline and accelerates down the incline at 0.25 m/s^2. What is the coefficient of kinetic friction? My answer was 68.2 and it was incorrect.
October 15, 2010

physics
For the question about friction force impeding motion. I'm sorry I tried what you wrote and did not get the correct answer. Its' not your fault. I am doing university phys and have never taken it before. I am little confused about what to do. Could you put it in steps...
October 15, 2010

physics
Part C Piles of snow on slippery roofs can become dangerous projectiles as they melt. Consider a chunk of snow at the ridge of a roof with a pitch of 21 degrees. If the edge of the roof is 11.0 above ground, what is the speed of the snow when it hits the ground?
October 15, 2010

physics
Part B Piles of snow on slippery roofs can become dangerous projectiles as they melt. Consider a chunk of snow at the ridge of a roof with a pitch of 21. As the snow begins to melt, the coefficient of static friction decreases and the snow eventually slips. Assuming that the ...
October 15, 2010

physics
Piles of snow on slippery roofs can become dangerous projectiles as they melt. Consider a chunk of snow at the ridge of a roof with a pitch of 21. What is the minimum value of the coefficient of static friction that will keep the snow from sliding down in units uK?
October 15, 2010

physics
A 11.0 box is released on a 37 incline and accelerates down the incline at 0.25 .What is the coefficient of kinetic friction in units uk? What is the friction force impeding its motion in N?
October 15, 2010

physics
I worked it through and checked it didn't make sense to me. But I have to finish the assignment soon so I put the answer in anyway. Thanks for you patience.
October 15, 2010

physics
For my question about the carton's speed must I do each step you laid out or just the last one? I got the wrong answer. Thanks for your help.
October 15, 2010

physics
A carton lies on a plane tilted at an angle theta 29 degrees to the horizontal, with a friction of uk .12.If the carton starts from rest 7.90 up the plane from its base, what will be the carton's speed when it reaches the bottom of the incline?
October 15, 2010

physics
A flatbed truck is carrying a heavy crate. The coefficient of static friction between the crate and the bed of the truck is 0.66.What is the maximum rate at which the driver can decelerate and still avoid having the crate slide against the cab of the truck?
October 15, 2010

physics
A 11.0 box is released on a 37 incline and accelerates down the incline at 0.25 .What is the coefficient of kinetic friction?
October 15, 2010

science
i need to define variable, independent variable, control and control group. HELP!
October 7, 2010

geometry
The perimeter of a quadrilateral is 56. The lengths of three consecutive sides are 9, 13, and 16. What is the length of the fourth side?
October 1, 2010

math
The perimeter of a quadrilateral is 56. The lengths of three consecutive sides are 9, 13, and 16. What is the length of the fourth side?
October 1, 2010

Math-New Geometry
Choose the correct property illustrated by the following statement: If 3m¡ÐZ = 90¨¬, then m¡ÐZ = 30¨¬ Please help know its either division property or reflexive property...im not sure wich though..if any one knoes its very appreciated thxx
September 29, 2010

2nd grade
How would you explain this to a teacher that says the first one is correct?
September 28, 2010

2nd grade
Please tell me which sentence is correct. Adrian chose him and I for the job. *Adrian chose him and me for the job.
September 28, 2010

Chemistry -help
To determine the sodium carbonate content & total alkali in NaOH, the following steps were performed:- 1) 2.0g of NaOH was dissolved in 80ml of CO2 free water. 2) 3 drops of phenolphthalein indicator were added and the solution was titrated with 1M HCl. Colour changed from ...
September 18, 2010

Chemistry- Dr Bob please help
Thanks Dr Bob,the purpose of this experiment is to test for the clarity of my sodium hydroxide sample. I intend to boil deionized water to get CO2 free water, cool the water and add it to a 100mL volumetric flask containing 10g of solid NaOH. Would that be alright? Also, can ...
September 18, 2010

Chemistry- please help
Thanks, can you then explain the exact steps (including the apparatus to use) so that the procedure can be followed? Thanks a lot:)
September 18, 2010

Chemistry- please help
I have test procedure to evaluate the clarity of a sodium hydroxide (NaOH) sample that goes like this: Dissolve 10g of NaOH in carbon dioxide free water and dilute to 100ml with the same solvent. Please explain how to perform this test. Do I boil 100ml of deionized water and ...
September 18, 2010

Chemistry
I have test procedure to evaluate the clarity of a sodium hydroxide (NaOH) sample that goes like this: Dissolve 10g of NaOH in carbon dioxide free water and dilute to 100ml with the same solvent. Please explain how to perform this test. Do I boil 100ml of deionized water and ...
September 18, 2010

college
A thirteen-year-old girl, who is underdeveloped and thin, has a blood disorder. She frequently experiences chest and abdominal pain, fever, and coughing, and has trouble breathing. Her teachers often spend additional time with her, explaining concepts that the rest of the ...
August 25, 2010

Math
a 25.00 gram sample is placed in a graduated cylinder and then the cylinder is filled to the 50.0 mL mark with benzene. the mass of benzene and solid together is 58.80 gram. assuming that the solid is insoluble in benzene and that the density of benzene is .880 g/cm^3 , ...
August 23, 2010

math
32 is 40% of what number?
August 11, 2010

Science
Thank you So much! This was a HUGE help!!!
July 26, 2010

Science
Can someone please give me a SIMPLE definition of metabolism. I've seached tons of dictionaries, but they all give a long and confusing definition and I'm not sure if I understand the concept.. Please help!!
July 26, 2010

math
When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= -5t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in meters/sec and “k” is the initial height in meters...
June 15, 2010

Math
Which of the following is an example of a ratio? number of dogs who like Good boy treats number of chocalates per bag number of people who like math all of the above Please help
May 25, 2010

management
Think of a recently completed group project that you have been involved in. This project may have been a student project, a group project, or an extracurricular project. Briefly describe the situation and choose one of the following to post on the discussion board: Analyze how...
May 23, 2010

geometry
a pallelagram?
May 20, 2010

Chemistry
Is 20.0 mL of 1.0M CH3COOH and 10.0mL of 1.0 M NaOH a buffer solution of 3?
May 4, 2010

floral designing
what kind of container do you need for a Hogarth arrangement?
April 23, 2010

math
a jar contain 8 blue blocks 4 red ,9 orange and 4 green ones. About what fraction of the time would you expect to pull out a blue block?
April 19, 2010

math (advanced alg and trig)
Solve to the nearest minute: x is greater than or equal to 0 and less than 360. 3sec^2 x-8tan-6=cotx
March 28, 2010

trig
Prove that tan4x=(4tanx-tan^3x)/(1-6tan^2 x+tan^4 x) *note: the exponents are just numbers. there are no variables in the exponents.
March 27, 2010

Chemistry
You have to make sure that each ELEMENT has the same number of atoms on each side of the equation. so treat polyatomics like they are separate elements. if you have say, SO4 on one side, you have to make sure that there are 4 oxygen atoms and one sulfur atom on the other side ...
March 27, 2010

math
first solve each like they have an equal sign: 4>-2x+3 -3 -3 1>-2x -1/2<x (when you divide by a negative # in an inequality, you change a less than to a greater than or visa-versa) 12<-2x+5 -5 -5 7<-2x -7/2>x (same thing) hope that helped
March 27, 2010

Math
the formula for midrange is M=(maxX-minX)/2 (i think) so it'd be M= (28-6)/2 M=(22)/2 M=11
March 27, 2010

college chemistry - answer check ASAP!
The corrosion of iron can be thought of as an electrochemical cell reaction. Calculate the voltage difference between two points of corroding iron differing only in their partial pressures of oxygen: 0.20 atm of oxygen at one point and 0.0010 atm of oxygen at the other. The ...
March 13, 2010

estimating
A security analyst specializing in the stocks of the motion picture industry the relation between the number of movie theater tickets sold in December and the annual level of earnings in the motion picture industry. Time-series data for the last 15 years are used to estimate ...
March 11, 2010

chemistry
Give the cell diagram notation of the electrochemical cell that could be used to determine experimentally the dissociation constant (Kw) of water. The standard reduction potential for: O2 + 2H20 + 4e- ---------> 4 OH- 0.40 V
March 9, 2010

Science
Homw many grams of copper sulfate pentahydrate (CuSo4 5H2O) would you heat to produce 29.8 g of water?
March 9, 2010

KEYBOARDING AND WORD PROCESSING
Which of the following is correctly capatalized? (a Sincerely Yours (b Anatomy And Physiology (c Dear Mr. Welby (d Ladies and gentlemen
March 6, 2010

Statistics
There are 100 marbles in a bag. 200people are asked to draw a ball. Each marble drawn is put back into the bag before the next draw. 7 people draw red color marbles. How many red marbles are there in the bag?
March 4, 2010

math
how would u factor ab (to the 2nd power) - b
February 21, 2010

CALCULUS
If 6 J of work are needed to stretch a spring from 12 cm to 13 cm and 10 J are needed to stretch it from 13 cm to 14 cm, what is the natural length L of the spring?
February 21, 2010

CALCULUS
Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about the y-axis. Y = 3/X, Y = 0, X =5, X = 2
February 18, 2010

marketing
If you are using the Internet and Web resources for a business publication, under which conditions is it not necessary to include a citation?
February 12, 2010

English
What's a good TITLE for a play about a girl who acts so depressed because of a mothers death and a friend who helps her out in the end realize she can move on??!! Please I'm stuck, I want something creative! Any ideas??!!
February 3, 2010

English/Ideas
I have to write a 10 minute play in English on a topic of my choosing. I'm in High School and I need a couple of ideas. I'm pretty good when it comes to writing, it just takes me a while to come up with a topic. I was thinking maybe something funny, dramatic, or a ...
February 3, 2010

Physics
Describe the path of a moving body whose acceleration is constant in magnitude at all times and is perpendicular to the velocity.
January 24, 2010

English
Thank you for all your help Ms. Sue. :)
January 9, 2010

English
Wait so is it: 5. Four years later, Rudolf achieved her greatest personal triumph, three gold medals in a single Olympics. *ANSWER* AP=three gold medals in a single Olympics WM=triumph
January 9, 2010

English
I need help making sure I rewrote the following sentences correctly while including the appositive or appositive phrase. I made corrections. Are they right? 1. The Olympic athlete also overcame polio. (Ray Ewry) ANSWER= Ray Ewry, the Olympic athlete, also overcame polio. 2. ...
January 9, 2010

English
I need to check my answers. The assignment was to write the appositives and appositive phrases in the following sentences, along with the words they rename or identify. Are these Correct? 3. A basketball star at age 13, she was known for her speed. *ANSWER* AP=A basketball ...
January 9, 2010

English
I need help making sure I rewrote the following sentences correctly while including the appositive or appositive phrase. 1. The Olympic athlete also overcame polio. (Ray Ewry) ANSWER= Ray Ewry, the Olympic athlete also overcame polio. 2. Ewry competed in the standing high ...
January 9, 2010

English
I need to check my answers. The assignment was to write the appositives and appositive phrases in the following sentences, along with the words they rename or identify. 1. Wilma Rudolph, another champion sprinter, also overcame a disability. *ANSWER* AP=another champion ...
January 9, 2010

Biology
What are two autotrphs that don't use sunlight? How might these organisms provide clues to exterrestrial life?
October 30, 2009

Chemistry
Thanks so much!
October 7, 2009

Chemistry
Sorry for pestering you on this but I really appreciate your help. The way I first did the equation, I had too many products. My question is when I do these should the products only be in the form of either a)CO and H2O or B)C and H2O? So if I set up the products to have ...
October 7, 2009

Chemistry
Thanks. Is there any way to tackle these incomplete combustion equations, any form to follow? I'd really appreciate it since I'm clearly on the wrong track.
October 7, 2009

Chemistry
I have a question about incomplete combustions. I think that you can have carbon monoxide, carbon dioxide, water and carbon or some combination of these in the products of incomplete combustions. Is this right? For Pentane, would it be correct to show one possible equation as ...
October 7, 2009

Math
The average of 2 numbers is 34. The first number is three times the second number. what are the two numbers?
September 20, 2009

Science
I need examples of each of the seven crystalline systems.
September 17, 2009

basic chem
so does that mean that S can have a net ionic charge of +4 as well as -2?
September 15, 2009

basic chem
Oxygen has a charge of -2 Sulfur has a charge of -2 My product in a equation is S02 but how is this possible is they both have the same charge? because now the S has a charge of -2 and the O of -4
September 15, 2009

History
its in south asia
September 15, 2009

Precal
Xmin=-10 Zmax=10 Xscl=1 Ymin=-10 Ymax=10 Yscl=1
September 15, 2009

Algebra
sorry i messed up ou have to multiply the seven too
September 15, 2009

Algebra
multiply each side by 6, which wuill cancel out the 6 on the left side of the equation, and on the left you will multiply 2/3 and 6, giving you 4. now you have m-7=4 add 7 to both sides, giving you m=11
September 15, 2009

math analysis
Go to Y= and type in your f(x)= and go to second, graoh and look for the zero in the y1 column
September 15, 2009

Algebra
52,955
September 15, 2009

AP chemistry
Sodium azide, the explosive chemical used in atuomobile airbags, is made by the following reactions: NaNO3 + 3NaNH2 => NaN3 + 3NaOH+ NH3 If you combine 15,0 g of NaNO3 (85 g/mol) with 15.0 g of NaNH3, what mass of NaN3 is produced?
September 15, 2009

Math
I don't understand what you mean by the commas v=(0,-590)?
September 12, 2009

Math
An airplane is heading due south at a speed of 590km/h. If a wind begins blowing from the southwest at a speed of 65.0km/h (average). Calculate magnitude of the plane's velocity, relative to the ground. Calculate direction of the plane's velocity, relative to the ...
September 12, 2009

Math
A boat, whose speed in still water is 2.80m/s , must cross a 280m wide river and arrive at a point 120m upstream from where it starts. To do so, the pilot must head the boat at a 45.0 degrees upstream angle. What is the speed of the river's current?
September 12, 2009

palmerston
the trees bent in the wind.(and) their leaves fluttered. need to join these sentences together by using and
September 7, 2009

home economics
name 12 careers in home economic management
September 6, 2009

Math (pls help)
write the number in expanded form. 1) 46,182 2) 20, 397
September 5, 2009

foreign language
How do I translate this poem into English (it's in portuguese)? Eu queria você perto de mim Queria poder abraçar com todo meu carinho A gente se encontra apenas nos sonhos Por que a gente é tão feliz nos sonhos? Sempre vejo a gente sorrindo, se ...
July 29, 2009

Finite Math
Use the formula m=(y2-y1)/(x2-x1)
July 23, 2009

physics
our class was given an extra credit assignment where we have to design a mobile that has both the net forces and torques = 0. i have all of the masses know i just don't know how to find radii. no two masses can be in the same position nor can they be at the center of mass...
July 3, 2009

budgets and forcasting
How are budgeting systems used to weigh the efficiency and effectiveness of a health and human service agency? Why is this important?
June 25, 2009

financial management
What is the basic accounting formula?
June 7, 2009

english
I need help finding metaphors and assonances in 5 poems? I Played a Game I played a game. I rode my bike. I had a snack. I took a hike. I read a book. I watched T.V. I built a fort. I climbed a tree. I surfed the web. I played guitar. I caught a bug inside a jar. I called my ...
June 5, 2009

pre-algebra
I have two questions about finding the slope of a line. First question: Is the formula Y2-Y1 over X2-X1? Second question: When I am given a line on a graph, how do I find Y1, Y2, X1, X2 to use in finding the slope?
May 16, 2009

Chemistry
Every balanced equation is written so BLANK is/are conserved atoms mass a and b None of the above I thought the answer would be matter, but that's not an option. What would it be then? Thanks!
April 20, 2009

English
1) I heard him say that... Please explain the grammar rules for "say" (present tense) after the word "heard". 2) A Economic Development Board survey... Why is it "a" not "an"? Is it because it is "a survey"? 3) A historic ...
April 4, 2009

Chemistry
We say that an ionic bond is the electrostatic force of attraction between oppositely charged ions. What does electrostatic mean?
April 1, 2009

Chemistry
Is sulphuric acid covalent? Please explain. Thanks.
March 22, 2009

Chemistry-confused
I am rather confused. Is sand considered a mixture or a compound? Some have said it is a compound because it is silicon dioxide. Others have said it is a mixture because it is impure silicon dioxide. So...?
March 21, 2009

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