Tuesday
October 21, 2014

Posts by shawn


Total # Posts: 480

Chemistry
Hydrogen fluoride is used in the manufacture of Freons (which destroy ozone in the stratosphere) and in the production of aluminum metal. It is prepared by the reaction below. CaF2 + H2SO4 CaSO4 + 2 HF In one process 9.00 kg of CaF2 are treated with an excess of H2SO4 and ...
August 7, 2012

physics
A 326 g object is attached to a spring and oscillates with a period of 0.25 s. The total energy in this system is 5.83 J. What is the amplitude of the motion?
July 19, 2012

physics
At the grocery store, you place some produce onto a scale that has a vertically hung spring supporting the produce. The spring has a spring constant of 16 N/m. Your produce bobs up and down with an amplitude of 20 cm, and the maximum speed it reaches is 0.4 m/s. How much does ...
July 18, 2012

physics
A 5 g bullet is fired into a 2 kg wooden block attached to a spring with a force constant of 20 N/m. It lodges in the block, and the block and bullet compress the spring until they come to a rest. If the bullet was moving at 1000 m/s just before the collision, how far is the ...
July 18, 2012

math
What is the apr if the amount financed $3500; Interest Charged $ 675; Number of Payments 24
June 12, 2012

Chemistry - Equilibrium
Silver ion concentrations are needed for a solution. You have 0.050 M AgNO3, if you added 5.0mL of 12. M NH3 to 500.mL of this solution, how much silver ion in M will you have at equilibrium? [Kf for Ag(NH3)2+ is 1.5 x 10^7]
April 25, 2012

math
explain how knowing that 5/8=0.625 helps you write the decimal 4 5.8
March 14, 2012

business
Mel's Furniture recieved an invoice dated September 27 for five bedroom sets at $3,000 each. The invoice indicated a trade discount of 5/8/3. The seller of the furniture prepaid the freight of $200. Terms were 2/10 EOM.Assuming Mel pays on November 2, what amount would be ...
March 12, 2012

human resources
A truck costing $25,000 with a residual value of $5,000 was purchsed by Rim Corporation. The truck's estimated life is 10 years. At the end of Year 2,what is the book value using declining-balance method? assume a depreciation rate of twice the straight-line method.
March 12, 2012

business math
Jeff Sellers bought 200 shares of radio shack stock at $22.35. eight months later,he sold the stock at $31.76.assuming a 2% commission charge, what is the bottom line for Jeff?
March 11, 2012

business math
Pete's warehouse has a market value of $5,000,000, the property in Pete's area is assessed at 40%of the market value. the tax rate is $105.10 per $1,000 of assessed value. what is Pete's property tax?
March 11, 2012

business math
Mel's Furniture recieved an invoice dated September 27 for five bedroom sets at $3,000 each.The invoice indicated av trade discount of 5/8/3. The seller of the furniture prepaid the freight of $200. Terms were 2/10 EOM.Assuming Mel pays on november 2,what amount would be ...
March 11, 2012

Physics
A ship maneuvers to within 2500 m of an island's 1800 m high mountain peak and fires a projectile at an enemy ship 610 m on the other side of the peak, as illustrated in Figure 3-29. If the ship shoots the projectile with an initial velocity of v = 256 m/s at an angle of...
February 27, 2012

Physics
A spy in a speed boat is being chased down a river by government officials in a larger craft. If the spy travels at 26 m/s and the officials travel at a speed of 14 m/s, how far from each other will the two vessels land after they fly off a 5.0 m waterfall?
February 27, 2012

algebra
What is the quotient if the dividend is 1/2 & the divisor is 1/8?
February 6, 2012

intermediate algebra
x^2-25/x^2+11x+24
February 5, 2012

Business Finance
2,102,000
January 30, 2012

Physics
a)91.0 km b)53.5 km/h
January 26, 2012

business math
Is the answer Mel will $500
December 27, 2011

US History (Finals Tomorrow Pleasee Help)
what were the important political parties since the election of Andrew Jackson as president to the end of the reconstruction, when the country was left with only two major parties, racially and regionally divided? Include third parties. What did they stand for. Who voted for ...
December 6, 2011

US History (Finals Tomorrow Please Help)
Keeping in mind how the expansion of U.S. territory westward threatened the delicate balance of power in congress between free and slave states and Lincoln's stance on slavery, describe how key events (such as land acquisitions, agreements about how new territories should ...
December 6, 2011

u.s history
Keeping in mind how the expansion of U.S. territory westward threatened the delicate balance of power in congress between free and slave states and Lincoln's stance on slavery, describe how key events (such as land acquisitions, agreements about how new territories should ...
December 6, 2011

u.s history
what were the important political parties since the election of Andrew Jackson as president to the end of the reconstruction, when the country was left with only two major parties, racially and regionally divided? Include third parties. What did they stand for. Who voted for ...
December 6, 2011

physics
you spend 30.0 minutes on a stair-climbing machine, climbing at a rate of 80 steps per minute, with each step 8.00 inches high. If you weigh 150 lb and the machine reports that 690 kcal have been burned at the end of the workout, what efficiency is the machine using in ...
December 4, 2011

Physics
How did you get the first part?
December 2, 2011

Math
what is the apr if the amount Financed $3500; Interest Charged $ 675; Number of Payments 24
November 28, 2011

spanish
What word best completes this sentence. ¿Dónde están Uds.? (Está) (Estás) (Estoy) (Estamos) en la clase de ciencias naturales.
November 25, 2011

spanish
What word best fits this Sentence. ¿Dónde están Uds.? (Está) (Estás) (Estoy) (Estamos) en la clase de ciencias naturales.
November 19, 2011

spanish
What word best fits this sentence? Que necesitas para la clase de ciencias naturales?________ un diccionario! (Necesitamos) (Necesito) (Necesitan) (Necesita)
November 19, 2011

spanish
Which word best fits this sentence. La clase de ciencias sociales es (facil) (aburrida) (dificil) (divertida). Hay mucha tarea todos los dias.
November 17, 2011

Spanish
I am trying to complete this Paragraph using these 7 words. 1. eres 2. soy 3. aveces 4. deportista 5. segun 6. le gusta 7. se llama. Some of the words can be used twice. Como se llama tu amigo.__________1. Kiko. Que _________2.hacer? Pues,__________3. practicar deportes y ...
November 11, 2011

spanish
Can you give me a example of what two friends do and don't like written in Spanish in an Essay.
November 4, 2011

calculus
Given f(x)=sin(x)-2cos(x) on the interval [0,2pi]. a) Determine where the function is increasing and decreasing. b) Determine where the function is concave up and concave down. ________________________________________ I know: f′(x)=cos(x)+2sin(x) f″(x)=-sin(x)+2cos...
November 1, 2011

math
14/15=2x
October 24, 2011

english
the comment of one little boy was especially movinng
October 20, 2011

spanish
How do you say 5:20,10:45,1:15,7:30,6:42 all in spanish
October 13, 2011

Business/entrepreneur
Describe how the owner uses capital and human resources to ensure revenue or control.
October 12, 2011

math
how can estimating help you add two- digit numbers?
October 3, 2011

math
simplify 20 minus 16 divided by 4 times 5 plus 10
September 29, 2011

help please
i think is D
September 25, 2011

psychology
The blind man and the elephant is a metaphor that shows how
September 11, 2011

Information literacy
Which of the following is an article from a popular magazine?
September 10, 2011

algebra 1
7x+8(2y+2x)
September 9, 2011

statistics
For each of the following samples that were given an experimental treatment, test whether these samples represent populations that are different from the general population: (a) a sample of 10 with a mean of 44, (b) a sample of 1 with a mean of 48. The general population of ...
July 19, 2011

math 111c
how long will it take for $2600 to grow to $20,400 at an interest rate of 6.1% if the interest is compounded continuously?
July 6, 2011

Psychology
kay Thanks
June 28, 2011

Psychology
wait can it be C?
June 28, 2011

Psychology
kay thanks
June 28, 2011

Psychology
Dr. Kyle shared the newspaper clipping with his class. "This is an unusual case, but I believe the punishment phase of the trial would have been different in another state. The crime was committed, but the defendant is not in touch with reality most of the time." Dr...
June 28, 2011

math
10. Use this figure to answer the following six questions in the essay box. is a diameter. is a tangent. a. m1 and m2b. m3c. m d. m4e. m5f. m
June 28, 2011

Into to busineess
How can lean manufacturing and near-sourcing help a company gain a competitive edge and prepare for the future
June 12, 2011

math
Convert to decimal notation. 2/3
May 27, 2011

algebra
The area A of a parallelogram with base b and height h is given by A= bh. Find the area of the parallelogram when the height is 15.4 cm and the base is 6.5cm
May 27, 2011

algebra
The area A of a triangle with base b and height h is given by A=1/2bh. Find the area when b=45m(meters) and h=86m.
May 27, 2011

trig
if point P is a point on the terminal side of 0, and 0 is in standard position, find sin 0,cos 0 and tan 0. 1. P(-6,8) 2. P (1,3) 3. P (-2,-40), 4. P (-5, -12)
May 14, 2011

trig
If cos 0 = - 1/2 and tan 0 > 0, find the quadrant that contains the terminal side of 0, and then find the exact values of the other five trig functions of 0.
May 14, 2011

trig
if sin 0 > 0 and tan 0 < 0, what quadrant contains the terminal side of 0.
May 14, 2011

Math
The Great Pyramid of Giza has a square base with side length of 755 ft. and an original height of 481 ft. Determine its original surface area to the nearest square foot.
March 31, 2011

Physics
what is the formula used to find time with an Vo at 0, Vf at 22 m/s2, and a constant velocity at 1.7 m/s2?
March 21, 2011

Algebra Please Help
I have been out of school for a long time and not understanding these questions. Please help why is 5^0=1 can you explain when (-3)^n is positive and when it is negative.
March 15, 2011

com155
Did the recommendation change the way you previously thought about buying vs. leasing a car?
March 6, 2011

Chemistry
Really? This is your equation for part A? **Please do not use this or it will be wrong..
February 28, 2011

pre-algebra-is my answer right
5(2/5)-5/6=
February 9, 2011

computer science
What is an assembly language
January 17, 2011

Calculus
A baseball player hits a line drive to center field. He runs from second to third at 20 feet/sec. How fast is the distance from the runner to home plate changing when he is halfway to third base?
December 30, 2010

Physics
A 0.20-kg block rests on a frictionless level surface and is attached to a horizontally aligned spring with a spring constant of 40 N/m. The block is initially displaced 4.0 cm from the equilibrium point and then released to set up a simple harmonic motion. What is the speed ...
December 20, 2010

Physics
Thank You
December 20, 2010

Physics
The answer is 2450 J/K but I can't figure out how to get that.
December 20, 2010

Physics
The c with the line through it is a degree symbol, and the e is a ^ symble. I am sorry the computer put it in that way.
December 20, 2010

Physics
A 2.00-kg block of ice is at STP (0¢XC, 1 atm) while it melts completely to water. What is its change in entropy? (For ice, Lf = 3.34 „e 105 J/kg)
December 20, 2010

American History
1. True 2.b. 3.d. 4.a. 5.a.
December 18, 2010

American History
1.Did William Garrison and John Brown promote the same cause? true or false 2.The two most decisive battles of the Revolution were a. Trenton & Sarotoga b. Sarotoga and Yorktown c.Yorktown & Fallen Timbers d. Yorktown & Long Island 3.All of the following colonies were founded ...
December 18, 2010

Statistics
Statistical Techniques in Business and Economics 15 edition three years after this post STILL has all the answers wrong for this section. 19. Correct answer is 97 21 correct answer is 196 23 correct answer is 554 25. E=.04,Z=1.96,p=.6, find N. N=576.24=577(round up)
December 2, 2010

chem
Calculate the number of moles of the indicated ion present in each of the following solutions. Na+ ion in 1.20 L of 0.183 M Na2SO4 solution = ?mol
December 1, 2010

calculus
find the first derivative of y=cos(/9t+11
November 13, 2010

Math
find the the 2nd derivative and set equal to zero in order to find inflection points of the function f(x)=1/(5x^2+4)
October 29, 2010

math
It is grater than 7 tens and less than 8 tens. The number has 4 ones
October 12, 2010

algebra
Use the distributive property to write an equivalent variable expression. -5(4j-1)
October 12, 2010

chemistry
how much energy is required to heat 1.00L of water from 20degrees celcius to 90degress celcius
September 29, 2010

math
adam frog can jump 4 times as far as sonya frog. sonya frog can jump 8 inches. use a picture and a number sentence to tell how many inches adam frog can jump
September 22, 2010

math
selecting three (3) coins, but assume that there are 5 dimes, 4 nickels, and 2 quarters. In how many possible ways can the selection be made so that the value of the coins is at least 25 cents?
September 15, 2010

chemistry
What is the freezing pint of 0.0091 m aqueous sodium phosphate, Na3PO4? Assume that sodium phosphate is a strong electrolyte and it functions ideally in solution. (express your answer in degrees Celsius)
September 14, 2010

English
Dangling modifiers - are these right? Second entry is my corrected version. 1. In 1883, massive destruction was caused by the eruption of the volcano Krakatoa, an event recently examined in the book Krakatoa: The Day the World Exploded. In 1883, the eruption of the volcano ...
September 4, 2010

Statistics
VW Golf: $250 Saab: $300 Mercedes $4200 Jaguar $300 Expected profit for 500 customers: $2,545,000
July 27, 2010

hardware
What is the maximum frequency output for a square wave from the HP 33120A Waveform Generator? I found the HP 33120A Waveform Generator on the Agilent website but I'm not sure how to figure out the problem.
July 10, 2010

CJS230- Corrections
I looked over the website you provided, and it gives some of what I am looking for, but still not all. My instructor has not provided me anything else to go on so Im kind of on my own here. Thank you for the website link though. Any other help would greatly be appreciated.
June 4, 2010

CJS230- Corrections
Final Project: A World Apart Germany and America · Resources: Appendix A and Corrections: The Fundamentals · Select a country outside of the United States and research its correctional system. · Write a 1,050- to 1,400-word paper in APA format comparing ...
June 4, 2010

history
The task of economic policy is to create a prosperous America. The unfinished task of prosperous Americans is to build a Great Society. Our accomplishments have been many; these tasks remain unfinished: > to achieve full employment without inflation; > to restore ...
June 2, 2010

Vectors
If vector a and b are unit vectors, and |a+b|= root3, determine (2a-5b) dot product(b+3a)
May 19, 2010

Math
an saw
May 6, 2010

computers
I have just started a basic class in programming and I am totally lost. Can someone help me out? I have to write pseudocodes and create flowchart and don't have a clue. I need help with the following: flowchart, pseudo-code, Input and Output variables, and also an Program ...
April 30, 2010

Ap Chemistry
What exactly is this question telling me to do? Write the balanced chemical equation for the dissociation of Cu(OH)2(s) in aqueous solution.
April 29, 2010

Managerial Econ
Chevrolet just announced a new incentive program that provides either $5,000 cash back or zero percent financing for up to seven years on Chevrolet Silverado pick-ups. How do you think the bottom line of Heartland Chevrolet in Liberty, MO will be impacted by this offer in the ...
April 18, 2010

Manangerial Econ
You manage a U.S. based company that makes #2 pencils that sell in a highly competitive market (your pencils are considered a standardized commodity by your customers). Your marketing data predicts that in the upcoming year overall industry production will fall by at least 5% ...
April 18, 2010

Physics
E2 (total) of rod (of length L = 9.15 mm) = 4.18 ×10^3 V/m. E1=1.76 x 10^3. E3=1.57 x 10^3. The rod consists of three sections of the same material but with different radii. The radius of section 3 is 2.27 mm. What is the radius of (a) section 1 and (b) section 2? If ...
March 28, 2010

12th grade
factor completely x^4-16=0
March 7, 2010

algebra
(2x^2-8x-42)/6x^2=(x^2-9)/x^2-3x How do you solve this problem? Please list the steps.. Thank You
January 27, 2010

Chemistry
Rank these acids from weakest to strongest: H2C2O4, HCO3-, H2PO4-, HCOOH.
January 11, 2010

Physics
The driver accelerates a 240.0 kg snowmobile, which results in a force being exerted that speeds up the snowmobile from 6.00 m/s to 28.0 m/s over a time interval of 60.0 s. b. What is the snowmobile's change in momentum? What is the impulse on the snowmobile? c. What is ...
January 6, 2010

college
closing inventory (under perpetual system): 125,000 x 30% = $37,500 (Income statement and bal sheet) Sales Revenue : $162,500 (Income Statement) Cost of goods sold (expense): 125,000 x 70% = $87,500 (Income Statement) Gross profit: 162,500 - 87,500= $75,000 (Income statement) ...
December 30, 2009

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