Wednesday
October 1, 2014

Posts by SARA


Total # Posts: 3,677

Physics
The 1.4 kg, 40-cm-diameter disk in the figure below is spinning at 260 rpm. How much friction force must the brake apply to the rim to bring the disk to a halt in 4.5 s?
November 18, 2010

algebra
what is (9,7) with a slope of 3 be in point-slope form?
November 16, 2010

math
not math its like algebra or calculus or something please change subject name
November 16, 2010

Calculus
Oh, I am sorry! I had my calculator on radian mode instead of degree mode. Silly me. Thanks so much for the help! I think I have managed to do the remainder of the problem, except for part E. How would I be able to tell if that function were differentiable or not?
November 12, 2010

Calculus
I'm having a little trouble with this problem...it would be great if you could point out where I'm going wrong. Hours of Daylight as a Function of Latitude. Let S(x) be the number of sunlight hours on a cloudless June 21st, as a function of latitude, x, measured in ...
November 12, 2010

Physics - Mechanics and Ocsillatory Motion
An 8.70 kg block slides with an initial speed of 1.56 m/s up a ramp inclined at an angle of 28.4 with the horizontal. The coefficient of kinetic friction between the block and the ramp is 0.62. Use energy conservation to find the distance the block slides before coming to rest...
November 10, 2010

chem
How many moles of O are in 13.0 mol Fe(NO3)3? can you please find this using dymensional analysis and show me how you worked it? Thans
November 10, 2010

anatomy and physiology
digestive mucosa
November 10, 2010

anatomy and physiology
i think it is the process in making dna
November 10, 2010

math
Terms of sequences 15,22,31,42,55 find next 3 terms and the formula also for the sequence
November 10, 2010

chemistry 110
Write the overall balanced equation for NaOH to form soluble Na2SO4 along with H2O as products.
November 9, 2010

chemistry 110
Pure water in contact with air has a higher conductivity than the same water that has had nitrogen gas bubbled through it. Why?
November 9, 2010

Flec
are you talking in terms on math? im not sure what flec is. but a prime factor is all of the prime numbers(a number that can only be divided by 1 and itself) that will exactly divide the given number
November 9, 2010

Chemistry
2. What are spectator ions in chemical reactions
November 9, 2010

Chemistry
1. Write the formulas of the principal molecular or ionic species present in an aqueous solution of each substance. (a) Sodium Chloride, NaCl Na+ + Cl- (b) Hydrogen bromide, HBr (c) Iron (III) sulfate, Fe2(SO4)3 (d) Ethanol, CH3CH2OH (e) Glucose, C6H12O6 (f) Ammonium acetate, ...
November 9, 2010

history
In the 1920s, Babe Ruth was famous because
November 9, 2010

Math
Thank You
November 4, 2010

Math
1/21
November 4, 2010

Math
Using the digits 2 and 1. Write a fraction less than 1/10
November 4, 2010

Math
1/91
November 4, 2010

Math
Using the digit 9 and 1. Write a fraction less than 1/10
November 4, 2010

Math
1/51
November 4, 2010

Math
Using the digit 5 and 1. Write a fraction less than 1/10
November 4, 2010

Math
0.12
November 4, 2010

Math
Using the digit 2 and 1. Write a decimal less than 0.3
November 4, 2010

Math
Using the digit 9 and 1. Write a decimal less than 0.3
November 4, 2010

Math
0.15
November 4, 2010

Math
Using the digit 5 and 1. Write a decimal less than 0.3
November 4, 2010

math
2/1
November 4, 2010

math
Using the digit 2 and 1. Write a fraction greater than 1/3
November 4, 2010

Math
Using the digit 9 and 1. Write a fraction greather than 1/3
November 4, 2010

Math
Using only the digit 5 and 1. Write a fraction greater than 1/3
November 4, 2010

math - geometry
graph the quadrilateral seperately nd algebraically and show if it's a square quad abcd:a(0,a) b(a,2a) c(2a,a) d(a,0)
November 3, 2010

Math
Copy and comple the chart. For each category, write an example, using only the digit given and the digit 1. Examples for the first category have been completed for you. _______________________________________ Category 5 9 2 _______________________________________ Fraction 51/...
November 3, 2010

math
In a photograph, the length of a sailing ship is 12 in., and the height of its mast is 5 in. The actual ship is 30m long. What is the actual height of the ship's mast?
November 3, 2010

5th grade
In a photograph, the length of a sailing ship is 12in., and the height of its mast is 5in. The actual ship is 30 m long. What is the actual height of the ship's mast?
November 3, 2010

adult education
1. What are the primary roles of media delivering news to the public?
November 1, 2010

algebra 1
there are 5 rows of pictures with 3/16 inch of vertical space between pictures.Draw a diagram and label all the heights on your diagram then write and solve an equation to find the height of each picture
November 1, 2010

chemistry
find the mass of C3H8 required to generate 2.5x10^8 KJ of energy when combusted with O2 gas to produce CO2 gas and water vapor
November 1, 2010

chemistry
describe what you would observe if you mixed the following pairs of solutions, include the color of all solutions and or precipitates a)BaCl2 and Pb(NO3)2 b)Pb(NO3)2 and NaCO3
November 1, 2010

english
I am talking about the Aliens that are believed to be existed. Do they have other names? Thanks
October 31, 2010

english
My topic is "Aliens" I have to have question on the topic and my question is: I'm wondering why Aliens can't be seen by humans. The topic must have exigency what does that mean, can u give examples. help with Research plan and how i can investigate my ...
October 31, 2010

childcare
to say that all african-americans are fast runners is an example of
October 31, 2010

child care
books that promote tolerance include
October 31, 2010

Physics - Mechanics and Ocsillatory Motion
thanks, I've got the first part correct now. can anybody help out a little more on the second part? I'm still completely confused.
October 30, 2010

Physics - Mechanics and Ocsillatory Motion
The force shown in the figure acts on a 1.7-kg object whose initial speed is 0.44 m/s and initial position is x = 0.27 m. the figure can be found at: [[webassign dot net forwardslash walker forwardslash 07-16 dot gif]] (a) Find the speed of the object when it is at the ...
October 30, 2010

Please Help Ms. Sue
What are some authentic details of magazines? That would be price, captions, cover... What else?
October 28, 2010

History
What is the Battle of Bunker Hill? Explain with 200 words.
October 27, 2010

Chemistry
The O−H bond enthalpy is 463 kJ/mol. What is the wavelength of light that will cause dissociation of H2O into the hydrogen atom and the hydroxyl radical
October 26, 2010

Chemistry
So, if I mixed them together, would I take the total volume of the solution and multiply it by 4 M, or just keep it as 2 M?
October 26, 2010

Chemistry
How would I find the moles of H+ if I have 2.0 M HCl and 2.0 M NaOH solution?
October 26, 2010

college chemistry
Use the thermochemical equations shown below to determine the enthalpy (kJ) for the reaction: H2SO3(l)=>H2S(g) + 3/2O2(g) H2SO3(l)=>H2O(l) +SO2(g) DH=62KJ SO2(g)=>S(s) + O2(g) DH=297KJ H2S(g) + 1/2O2(g)=>S(s) + H2O(l) DH=-155KJ
October 24, 2010

English-Article on the Hunger Games
This is for my magazine on the Hunger Games, I did an article on Sponsers which Katniss and Peeta got the most. Katniss Everdeen is the main character in this book and Peeta is a boy from her same district. Their names were drawn from this glass jar and so they they were ...
October 24, 2010

English-Article
This is for my magazine on the Hunger Games, I did an article on Sponsers which Katniss and Peeta got the most. Katniss Everdeen is the main character in this book and Peeta is a boy from her same district. Their names were drawn from this glass jar and so they they were ...
October 24, 2010

Physics
Okay sorry I figured it out, I was dividing by the X value in cm not m, in which case would cause the answer for the above to be 723.86 N not 7.24.
October 23, 2010

Physics
I got the same answer, but are sure this is the equation? I tried to use it with a similar problem, .140 kg baseball, traveling 35 m/s which recoils the mitt 17 cm and I keep getting the wrong answer
October 23, 2010

To Writeacher
Writeacher, I did a composition on this movie, and I would appreciate it if u could check it over, thanks a lot.
October 21, 2010

English-Please Edit-Need Help Again
Thanks, but does everything else look good, I mean make sense?
October 21, 2010

English-Please Edit
Recently my class and I watched the movie "The Martian Child", and the teacher told us to write about the theme: Changed perspectives lead to Understanding. ~ The teacher said that this could be our delayed thesis if we wished. This is how it needs to go: DT~ ...
October 21, 2010

English-Please Edit
Recently my class and I watched the movie "The Martian Child", and the teacher told us to write about the theme: Changed perspectives lead to Understanding. ~ The teacher said that this could be our delayed thesis if we wished. This is how it needs to go: DT~ Delayed...
October 20, 2010

To Ms. Sue
Thanks Ms. Sue; sorry biff was meant be bad.
October 20, 2010

To Ms. Sue
Ms. Sue, could you please take a look at my Living Healthy Post, you are the only other English teacher I know besides Writeacher, and she's not on right now.
October 20, 2010

Living Healthy
1.What changes are you going to make in your day-to-day living that will improve your health and well-being? If you feel that your lifestyle is healthy, comment on the things that you are going to continue doing. 2.Suggest two things that you are going to do to maintain your ...
October 20, 2010

To Ms. Sue
Thanks.
October 19, 2010

To Ms. Sue
Ms. Sue, I just added more information to my answer. Can you check to see if it's good, thanks a lot. When you took the Multiple Intelligences quiz, what type of intelligence was rated the highest? How do you think this affects how you deal with stress? The type of ...
October 19, 2010

geometry...HELP!!
point A and B on the grid represent justin's house and the theater, respectively. if each unit reprsents 1 mile approximately how far must justin drive to get to the ttheater?
October 19, 2010

To Ms. Sue
oh, thanks very much Ms. Sue
October 19, 2010

To Ms. Sue
Ms. Sue, I had a question yesterday about stress, and I still require help on it. I'll give you the question as it is written to me. When you took the Multiple Intelligences quiz, what type of intelligence was rated the highest? How do you think this affects how you deal ...
October 19, 2010

To Ms. Sue
Ms. Sue could you please take a look at my stress questions, thanks a lot.
October 18, 2010

Stress
In a sentence or two, describe each of your own top three stressors. 1. Time. ~ I get a lot of homework and I try to use my time well to finish it all, but with distractions in the way it's not possible. 2. Health. ~ I am very conscious about my health, so when someone in ...
October 18, 2010

Stress
How can having Visual/Spatial Intelligence make you deal with stress better?
October 18, 2010

Stress
Think of a stressful time in your life. How did you deal with the stress. Right down a thoughtful answer. The most stressful time in my life came about when my great grandmother died. I was shattered completely after hearing that news, and so was my family. I was sad after ...
October 18, 2010

physics
A tank is moving away from a soldier with a bazooka at a constant velocity of 7.80 m/s. The bazooka fires a missile which accelerates from rest at 23.2 m/s2. The soldier fires the bazooka when the tank is 185 m away. A. How long is the missile in the air? B. How far does the ...
October 17, 2010

English-The Hunger Games
Thanks Ms. Sue
October 16, 2010

English-The Hunger Games
I have to create a magazine that would be published about the games(capitol) -Magazine format which I am doing is : * Regular issue during the games. CRITERIA: Create an authentic product true to the details of the novel. INCLUDE THE FOLLOWING: *min. 6 pages with a min. 1 ...
October 16, 2010

calculus
If f is continuous on [-1, 1] and f(-1) = 4 and f(1) = 3, then there exists a number r such that |r| < 1 and f(r) = π. Can this be true or false? Please and thank you
October 15, 2010

chem
can u explain?
October 15, 2010

chem
Name each of the following ionic compounds containing a polyatomic ion. (Type your answer using the format copper(II) chloride for CuCl2.) 1.Sn(SO4)2 thanks
October 15, 2010

calculus
Can you please explain why it is true Please and Thank you
October 15, 2010

calculus
If f(1) > 0 and f(3) < 0, then there exists a number c between 1 and 3 such that f(c) = 0. Is this true or false? Please and thank you
October 15, 2010

chem
Name each of the following ionic compounds containing a polyatomic ion. (Type your answer using the format copper(II) chloride for CuCl2.) 1. NaNO3 can u explain? thanks
October 15, 2010

physics
An object of mass M = 911 g is pushed at a constant speed up a frictionless inclined surface which forms an angle θ = 50o with the horizontal as shown in the figure below. What is the magnitude of the force that is exerted by the inclined surface on the object?
October 14, 2010

Chemistry
I believe #1 is 2Zn+02+4---->2Zn Cl2+2H20,can someone confirm?
October 14, 2010

Chemistry
I know nothing about chemistry, but am wondering if someone could help me with these. 1) Balance this redox reaction using the oxidation-number method. Zn + O2 + HCl ® ZnCl2 + H2O 2) Balance this redox reaction using the half-reaction method. (basic solution) Zn + MnO4- &...
October 14, 2010

Say NO! to Drugs
Thanks
October 13, 2010

Say NO! to Drugs
Thanks, Ms. Sue is there anything else I could add about spirituality or does my paragraph explain everything well?
October 13, 2010

Say NO! to Drugs
2.What's one thing your school or community could do to help prevent substance abuse in your area? What is this question exactly asking? This is what I have put: One thing that my school or community could do to help prevent substance abuse in my area is that they can make...
October 13, 2010

To Ms. Sue
Ms. Sue, I have replied to the previous post.
October 13, 2010

Say NO! to Drugs
Thanks!
October 13, 2010

Say NO! to Drugs
No I do not think so, cause I do not do drugs and I don't consider the people who do drugs around me cool either. So is my wording wrong on that? Should I say: I think young people choose to do drugs because they think it's cool and that they can be considered popular...
October 13, 2010

Say NO! to Drugs
Why do you believe young people like to do drugs? I think young people choose to do drugs because they think it's cool and that they can be considered popular among the others who choose not to. Some youngsters find it as amusement and like to get high; they enjoy the ...
October 13, 2010

math 209
divide 192 by 20 = 9.6 x 50 = 480
October 13, 2010

Chemistry
1) Balance this redox reaction using the oxidation-number method. Zn + O2 + HCl ® ZnCl2 + H2O 2) Balance this redox reaction using the half-reaction method. (basic solution) Zn + MnO4- ® Zn(OH)2 + MnO2
October 13, 2010

chem
i got the answer nvm. but thanks to however was going to help:)
October 12, 2010

chem
What are the basic units-single atoms, molecules, or formula units-that compose each of the following substances? a)N2 b)MgCl2 so.. my choices are single,molecules or formula units. i think a) is molecule and b) is formular units can yyou check my answers? thanks
October 12, 2010

chemistry
thanks:) so why is Rb2O a formula untis and not a molecule?
October 12, 2010

chem
how do you tell the difference between an ionic or a molecular compound? thanks
October 12, 2010

chem
i got it
October 12, 2010

chem
Determine the number of each type of atom in each of the following formulas. (a) Ba(OH)2(subscript) Ba 1. O 2. H 3. Ba thanks
October 12, 2010

ap chemistry
How do i wrtie the complete balance equation for this situation: A magnesium coil is dropped in perchloric acid solution.(molecular and ionic equations)?
October 12, 2010

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