Wednesday

August 27, 2014

August 27, 2014

Total # Posts: 80

**trig**

A spring is attached to the ceiling and pulled 17 cm down from equilibrium and released. After 3 seconds the amplitude has decreased to 16 cm. The spring oscillates 13 times each second. Assume that the amplitude is decreasing exponentially. Find an equation for the distance, ...
*August 17, 2014*

**chemistryyy**

The escape velocity of planet earth is 11.2 km/s. At what temperature would helium atoms be able to escape the earth's gravitational pull? (Note: you're calculating the average speed here, which means roughly 50% of the atoms would escape at any given time)
*March 6, 2014*

**chemistry**

you're right, I was actually just trying to research it the search bar. Sorry
*March 6, 2014*

**chemistry**

My motorcycle has a capacity of 4.5 gal of octane. If I combust all of the octane, what is the volume of CO2 generated by my motorcycle on one tank of gas? Assume that I burn all of the octane into CO2 on a warm day in June, where it is 80 degrees F outside with a barometric ...
*March 6, 2014*

**Please help Math**

a. Use the formulas for lowering powers to rewrite the expression in terms of the first power of cosine: (cos^4)x (or cos*x to the 4th power) b.Use an appropriate Half- Angle Formula to Find the Exact value of the expression: 1. tan 15(Degrees) 2. cos 3pi/8(Radians)
*March 3, 2014*

**Mathmatics**

a. Use the formulas for lowering powers to rewrite the expression in terms of the first power of cosine: (cos^4)x (or cos*x to the 4th power) b.Use an appropriate Half- Angle Formula to Find the Exact value of the expression: 1. tan 15(Degrees) 2. cos 3pi/8(Radians)
*March 3, 2014*

**Chemistry please help**

In lab, I weighed out and found the molarity of 1.108g Na2C2O4 and 1.100g K3Fe(C2O4)3. I titrated an average of 0.0335L of the sodium oxalate solution with KMnO4(potassium permanganate). I then titrated an average of 0.0169L of K3Fe(C2O4)3 X 3H2O with potassium permanganate. I...
*February 26, 2014*

**maths**

try to make all your denominators the same then add or subtract as needed.
*February 26, 2014*

**Lab/Chemistry**

In lab, I weighed out and found the molarity of 1.108g Na2C2O4 and 1.100g K3Fe(C2O4)3. I titrated an average of 0.0335L of the sodium oxalate solution with KMnO4(potassium permanganate). I then titrated an average of 0.0169L of K3Fe(C2O4)3 X 3H2O with potassium permanganate. I...
*February 26, 2014*

**chemistry**

using the ideal gas law or the combined gas law,why does the air pressure inside the tires on my motorcycle increases during the time I am riding it. Consider what factors are being kept constant and what are changing and how. What if I weigh alot?
*February 24, 2014*

**chemistry**

that's all I needed thank you so much, turns out I was way off
*February 23, 2014*

**ccchemistry**

I do have the added note that the answer to this problem is not the volume of the atmosphere - instead you are determining the volume of the atmsophere displaced by the CO2 generated from my motorcycle exhaust
*February 23, 2014*

**chemistry**

My motorcycle has a capacity of 4.5 gal of gasoline. If I combust all of the octane to power my motorcycle, what is the volume of CO2 generated from just my motorcycle on one tank of gas?Assume that I burn all of the gasoline into CO2 on warm day in June, where it is 85 ...
*February 23, 2014*

**chemistry**

50.0ml of an aqueous solution of 2.50M H3PO4 are mixed with 75.0 ml of an aqueous solution of 4.00 M Ca(OH)2. The resulting precipitate is washed and isolated using filtration. What mass of Ca3(PO4)2 is obtained?
*February 9, 2014*

**chemistry**

I am too, gold, I think. thanks sooo much for your help
*February 2, 2014*

**chemistry**

Rhodium metal currently costs $1251. per troy ounce (note this is different than a regular ounce! 1 troy ounce = 31.1035g). What would the cost be in dollars to purchase enough gold to form a solid square based pyramid with base dimensions 0.750m by 0.750m and height of 0.500m?
*February 2, 2014*

**chemistry**

A sample of aluminum metal containing 9.1080 x 10 to the 25 power atoms is drawn into a cylindrical wire with radius r=0.833 mm. how long must the wire be in meters?
*February 2, 2014*

**math**

tha are of a rectangular wall of a barn is 72 square feet. its length is 10 feet longer than twice its width. find the length and width of the wall of the barn
*January 23, 2014*

**parts of speech**

Which verb tense indicates continuing action? A. Present B. Past perfect C. Future D. Progressive
*November 19, 2013*

**Algebra**

Simplify radical terms, including fraction power expressions. Review the expression below and describe how to simplify the expression: ã100 Please help, I just do not know how to describe this.
*September 26, 2013*

**Algebra**

Thank you so much. Could you help me with one more? It is the same type of question but the problem is different. ã100.
*September 25, 2013*

**Algebra**

Simplify radical terms, including fraction power expressions. Review the expression below and describe how to simplify the expression: 16 1/2 Please help, I just do not know how to explain this.
*September 25, 2013*

**Algebra**

I am not sure how to solve this problem. Could someone please help and explain the proper steps. Determine the annual net cost if the Annual interest of 2.5% is paid if the balance exceeds $750, $8 monthly fee if the account falls below minimum balance $815, account falls ...
*August 6, 2013*

**Algebra**

Sorry I was supposed to determine the annual net cost.
*August 6, 2013*

**Algebra**

I am not sure how to solve this problem. Could someone please help and explain the proper steps. Annual interest of 2.5% paid if the balance exceeds $750, $8 monthly fee if the account falls below minimum balance $815, account falls below $750 during 4 months.
*August 6, 2013*

**Finance**

If I have $40,000 of pre-tax what are the differences between $1,000 tax credit versus a $1,000 tax deduction for a single taxpayer in the 25% tax bracket?
*August 2, 2013*

**accounting**

How do I figure out taxes associated with stock purchased in 2010 for $1000 held for 5 mths. Then sold for $1200 I am in the 28% tax bracket? (I must use the IRS regulations for capital gains in effect in 2010.) I really want to understand how to work this problem out from ...
*August 1, 2013*

**Algebra**

I do not the correct steps to solve for this problem. I know I have to first remove the negatives but from there I get confused. This is all the further I could get. Please help. The negative numbers are powers and the problem is a fraction. C-3D-2 C3D2 C-4D-5 C4D5
*July 25, 2013*

**Math**

Thank you very much, that has helped me so much. :-)
*July 24, 2013*

**Math**

How do I figure out -144/4 to find out if it is a natural number,a whole number, an interger, if it is a rational or irrational number,or a real number? I don't want direct answers i would like to understand how I would go about solving to figure it out on my own. I just ...
*July 24, 2013*

**math**

theta is an angle in standard position with a domain of 0 degrees < theta < 350 degrees and cot theta = -(24)/(7). Find all possible values of theta (accurate to 0.1 degree if necessary).
*March 30, 2013*

**MATH116**

Two forces of magnitudes 60 Newtons and 80 Newtons make an angle of 30 with each other and are applied to an object at the same point. Find the following: 1. the magnitude of the resultant force, and 2. to the nearest degree the angle it makes with the force of 60 Newtons.
*February 10, 2013*

**world civilization 2**

which of the following pairings is correct? Berthe Mariost-cubist, Emile Zola-abstractionist, Vasily Kandinsky-abstract, gustav flaubert-romanticsm
*January 22, 2013*

**chem**

As little as 1.oomg of Arsenic in 1-L of water can kill you. Calculate the following. Assume the density of the solution is 1.00g/cc. a.) How many moles of arsenic in 1 mg? b.) What is the mass percent of the solution? c.) What is the concentration in ppm and ppb? d.) What is ...
*December 8, 2012*

**chem**

A 0.050 L solution of H2SO4 requires 200.0 mL of 4.0 M NaOH for phenophthalein to turns pink to colorless. What is the molarity of the original H2SO4 solution? I got 4M but my instructor said it's 8M how did he get that? Pls need help figuring it out. Thanks
*December 7, 2012*

**chemistry**

Processed cheese must be at a pH of 5.5 to 5.9 to prevent the growth of unwanted microorganisms. If sample of cheeese has an [OH^-]of 7.76*10^-9, what does it mean? Show calculation. I really need help with please. Kindly show me hoe to compute it thanks a lot.
*December 5, 2012*

**math**

How many athletic association membership cards 1 3/8 inches wide can be cut from stock 24 3/4 inches wide?
*November 17, 2012*

**Pre Calculus**

cot^2 X - tan^2 X + sec^2 X = csc^2
*November 4, 2012*

**math**

Katie had a pack of twenty four cards numbered 1- 24. She arranged the cards into 6 piles. No more than 2 piles had the same number of cards the numbers on the cards in each pile added to the same total. What was the total and how could this be solved
*October 2, 2012*

**Statistics**

According to a survey, 21% of residents in a country over age 25 had earned at least a bachelor's degree. You are performing a study and would like at least 10 people in the study to have earned a bachelor's degree. a)How many residents of the country do you plan t ...
*June 24, 2012*

**math**

A student has a mean score of 88 on five tests taken. What score must she obtain on her next test to have a mean (average) score of 80 on all six tests?
*April 15, 2012*

**science**

which solution is made entirely of gases? cough syrup,soda,helium,or clean air.
*September 29, 2011*

**algebra 2**

during the first part of a trip, a canoeist travels 47 miles at a certain speed. the canoeist travels 16miles on the second part of the trip at a speed 5mph slower. the total time for the trip is 4 hours. what was the speed on each part of the trip.
*April 11, 2011*

**Pre Calc**

from the top of a 250 ft lighthouse the angle of depression to a ship in the ocean is 18 degrees. how far is the ship from the base of the light house?
*March 22, 2011*

**MOD 4 CHILD DAY CARE MANAGEMENT**

answer to exam 003048 003049
*February 12, 2011*

**geometry**

YW is a bisector of <XYZ. <XYW = (8x - 5) and <WYZ = (6x + 17). Find the measure of the following angles. 1. < XYW = 2. < WYZ = 3. < XYZ =
*September 18, 2010*

**ISCOM**

Taylor Inc. manufactures widgets. There is a particular assembly line for Widget X. This assembly line includes the assembly of various raw materials, subassemblies, and packing of the finished widget. Currently, approximately 27% of the total labor time is utilized in walking...
*July 13, 2010*

**Stress Management Techniques**

Thnx guys i got a 100 on my exams n i just changed the top numbers 16,17,20 to the ones below and it was correct...so trust me its not a lie... Date Graded 02/28/12 Examination 986889RR Grade 100
*July 3, 2010*

**Psychology**

Explain proactive and retroactive interference and how you might counteract their effects while studying in order to facilitate maximum absorption of information into long-term memory.
*May 22, 2010*

**college**

Trace the memory system from stimuli into long-term memory. Discuss the features of each step and factors that enhance or impede information flow in each step of the process.
*May 22, 2010*

**Math**

I don't get it what do you mean by that?
*March 21, 2010*

**Math**

Solve 4y-3 less than 7y-4 is the answer less than 2?
*March 21, 2010*

**math**

so Y would equal 2?
*March 21, 2010*

**math**

Solve 4y-3 less than 7y-4
*March 21, 2010*

**math**

Make up a set of 7 numbers having the following landmarks: mode: 21, median: 24, maximum: 35, range: 20
*November 13, 2009*

**math**

How do i expand and simplify (2x+5) (3x-4) 6x^2-8x+15x-20 6x^2+7x-20 Is this right??
*June 19, 2009*

**Math**

How do i expand and simplify (2x+5) (3x-4) 6x-8x+15x-20 6x+7x-20 13x-20 Is this right??
*June 19, 2009*

**Maths**

How do i expand and simplify (2x+5) (3x-4)
*June 18, 2009*

**algebra**

17-4 = 3p + p 4p = 13 Therefore, p = 13/4 = 3.25
*December 17, 2008*

**Chemistry help needed**

Thank you for your explanation.Is there any formula that we can apply universally for preparations of this nature(w/w)?
*December 17, 2008*

**Chemistry help needed**

How do I prepare 90% formic acid from conc. formic acid (98%-100% of density 1.22g/ml)? Please help me check if my calculations are correct. Assuming conc. formic acid is 99%, 0.99 X 1.22 = 1.2078 Add 1.2078 / 9 = 0.1342ml H2O to 1ml of conc. acid to have a solution that is 90...
*December 17, 2008*

**Chemistry pls help**

I have a chemistry question Please advise how do I prepare 1L of 75% H2SO4 from concentrated H2SO4 (98% of density 1.84g/ml)? Do you have an equation which i can use? Someone gave me the following equation but I do not understand it. Vx1.84x0.98={(1000-V)+ 1.84V}0.75 where V= ...
*December 3, 2008*

**Science, Chemistry**

I would like to know how to derive it, please?
*December 3, 2008*

**Science, Chemistry**

I have been told that to prepare 1L of 70% H2SO4 from concentrated sulphuric acid (96% with density 1.84g/ml), I should use the following equation to find out the volume of conc. acid needed (Vml). V x 1.84 x 0.96={(1000-V)+ 1.84V}0.7 i.e. V= 594ml of conc H2SO4. Use 594ml of ...
*December 3, 2008*

**Science**

How do I prepare 1% H2SO4 from concentrated sulphuric acid (96% with density 1.84g/ml)? Thank you very much for your help.
*December 2, 2008*

**critical thinking**

Thank you for your help.
*April 13, 2008*

**critical thinking**

I guess my answer would be "B". Am I right? Thanks
*April 13, 2008*

**critical thinking**

the number of black owners increased during the 1830-1860 period
*April 13, 2008*

**critical thinking**

property owned by black residents in Washington D.C 1830-1860 property value(dollars)-no. of owners 1830 1840 1850 1860 1-200 26 30 21 8 200-400 20 35 58 51 400-600 13 26 32 69 600-800 7 16 20 61 800-1000 2 5 11 48 1000-1500 2 8 19 69 1500-2000 1 1 1 21 2000-2500 1 2 4 20 2500...
*April 13, 2008*

**critical thinking**

2) Which of the following, if true, would best explain the material presented in the table? A) The total value of property owned by Black residents in Washington during the 1830-1860 period was similar to that in other cities during this period. B) Rising standards of living ...
*April 13, 2008*

**critical thinking**

2) Which of the following, if true, would best explain the material presented in the table? A) The total value of property owned by Black residents in Washington during the 1830-1860 period was similar to that in other cities during this period. B) Rising standards of living ...
*April 13, 2008*

**critical thinking**

2) Which of the following, if true, would best explain the material presented in the table? A) The total value of property owned by Black residents in Washington during the 1830-1860 period was similar to that in other cities during this period. B) Rising standards of living ...
*April 13, 2008*

**critical thinking**

Which of the following, if true, provides the strongest support for an archaeologist’s conclusion that a particular stretch of ancient stone-paved road was part of the Inca road system?
*April 13, 2008*

**accounting**

what accounts would be impacted by a $30,000 cash payment to a $125,000 loan (assuming there is no interest on the loan)?
*January 16, 2008*

**social studies**

lol ur taking the my-ged course aren't you? im me at tricia _ coleman 2001(no spaces) on yimand maybe we can compare notes lol
*December 3, 2007*

**Accounting**

I am struggling with the operating activities section of this as in what titles of accounts I should use in this section and do they decrease or increase the net income 2005 2004 Assets Cash . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 53,875 $ 76,625 Accounts ...
*October 21, 2007*

**Primates**

Where can I find information regarding when different types of primates showed up in earth's history? http://www.google.com/search?as_q=primate+evolution&hl=en&num=10&btnG=Google+Search&as_epq=&as_oq=&as_eq=&lr=&as_ft=i&as_filetype=&as_qdr=all&as_nlo=&as_nhi=&as_occt=title...
*April 20, 2007*

**unscramble MAUSULT**

MAUSULT is the word so could some1 plz help me unscramble it thx n advane Try these: http://www.ssynth.co.uk/~gay/anagram.html http://www.unscramble.net =) thx u so much writeacher thats the word thx a mil take care the ans is mutuals
*March 2, 2007*

**precalc**

3x to the third power<24x If this is 3x3 < 24x then divide by 3x on each side x2 < 8 x < sqrt8
*October 23, 2006*

**Eth 125**

The IAT Test was one measurement. I am glad to see that there is a place that we can all come and help each other!
*July 20, 2006*

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