Monday

August 31, 2015
Total # Posts: 518

**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*

**Chemistry**

-6.25
*December 7, 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*

**Chemistry**

1.8
*November 22, 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*

**Chemistry**

Suppose that 2.00 mol of HNO2 is dissolved in 1.00L of water at 25 degrees C. Because HNO2 is a weak acid, it is in equilibrium with the ions, H+ and NO2-. What are the concentrations of these ions at equilibrium?
*December 28, 2009*

**Chemistry**

A l.00L flask contains 4.40mol of HI at a certain temperature. The Keq at this temperature is 5.0 * 10^-4. What are the concentrations of H2 and I2 at equilibrium?
*December 28, 2009*

**Chemistry**

Which value of Keq indicates most favorability of product formation, Keq = 1 * 10^12, Keq= 1.5 or Keq= 5.6 * 10^-4?
*December 28, 2009*

**physics**

A broom handle has a length of 1.67m and a mass of 580g with the axis rotation through the center. (what is this problem asking me to do?)
*December 16, 2009*

**AP Chemistry**

I have no idea where to start with this problem: A certain reaction has the following general form: aA -> bB At a particular temperature and (A)o = 2.00(10^-2)M, concentration versus time data were collected for this reaction, and a plot of In(A) versus time resulted in a ...
*December 8, 2009*

**Ap Chemistry**

I have no idea where to start with this problem: A certain reaction has the following general form: aA -> bB At a particular temperature and (A)o = 2.00(10^-2)M, concentration versus time data were collected for this reaction, and a plot of In(A) versus time resulted in a ...
*December 8, 2009*

**Physics**

A bolt is to be tightened with a torque of 8.0 N*m. If you have a wrench that is 0.35 m long, what is the least amount of force you must exert? the equation for this problem is t=Fr sinbeta, but the sin is not given What am I suppose to do?
*December 6, 2009*

**Math**

So after i do all that should i get one whole number
*November 29, 2009*

**Math**

What is the probability that a number chosen at random from the range 1,000,000,000 to 9,999,999,999 inclusive will contain ten different digits? Round your answer to the nearest millionth
*November 29, 2009*

**Calculus**

A rectangular box with a square base and top is to be made to contain 1250 cubic feet. The material for the base costs 35 cents per square foot, for the top 15 cents per square foot, and for the sides 20 cents per square foot. Find the dimensions that will minimize the cost of...
*November 29, 2009*

**math**

A rectangular box with a square base and top is to be made to contain 1250 cubic feet. The material for the base costs 35 cents per square foot, for the top 15 cents per square foot, and for the sides 20 cents per square foot. Find the dimensions that will minimize the cost of...
*November 29, 2009*

**physics**

A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.17 and the push imparts an initial speed of 4.1 m/s?
*November 19, 2009*

**possessive nouns**

A ____ kindness kept them alive another day. Is it A. strangers B. stranger's C. strangers' D. strangers's Is it b. stranger's
*November 2, 2009*

**possessive nouns**

____ Jews fled from the German soldiers. Is it A. Polands B. Poland's C. polands' D. Polands's Is it b. Poland's
*November 2, 2009*

**possessive nouns**

______ stories seemed unbelievable. Is it A. Survivors B. Survivor's C. Survivors' D. survivors's Is it b. Survivor's
*November 2, 2009*

**possessive nouns**

Many ____ stomachs were often empty. A. refugees B. refugee's C. refugees' D. refugees's Is it c. refugees'
*November 2, 2009*

**possessive nouns**

Soldiers carried several ___ cold rations. Is it A. days B day's C.days' D. days's My answer is c. days'
*November 2, 2009*

**possessive nouns**

Success often depended on the ____ food suply. Is it A. armies B. armie's C. armys' D. army's I say it is d. army's
*November 2, 2009*

**possessive nouns**

Is it b. soldier's
*November 2, 2009*

**possessive nouns**

A _____ shoes wore out quickly. Is it A. soldiers B. soldier's C. soliers' D. soldiers's
*November 2, 2009*

**possessive nouns**

I chose c because I thought I should make it plural. is the correct one is b. poland's
*November 2, 2009*

**possessive nouns**

Is it c. Polands'
*November 2, 2009*

**possessive nouns**

I think it is D. Polands's
*November 2, 2009*

**possessive nouns**

_____ Jews fled from the German solders. Is it A. Polands B. Poland's C. Polands' D. Polands's
*November 2, 2009*

**possessive nouns**

American ______ efforts helped win the war. Is it A. soldiers B. soldier's C. soldiers' D. soldiers's
*November 2, 2009*

**Chemistry**

What type of chemical reation is : Na + H2O---) NaOH + H2? The 2s are subscripts but I couldn't get it to type that way.
*October 28, 2009*

**Social Studies**

is there freedom in massachusetts
*October 17, 2009*

**Ap Chemistry**

Hydrogen gives off 120. J/g of energy when burned in oxgyen, and methane gives off 50. J/g under the same circumstances. If the mixture of 5.0 g of hydrogen and 10. g of methane is burned, and the heat released is transferred to 50.0 g of water at 25.0 degress Celsius, what ...
*October 17, 2009*

**physics**

Is it possible for a car to move in a circular path in such a way that it has a tangential acceleration but no centripetal acceleration?
*October 9, 2009*

**algebra (excel)**

I am trying to create a forumla that will subtract two columns and in the third column tell me if the one column is greater than the other column by 10%. So far I have IF(AND(A:A-B:B>(10%)*(A:A)=TRUE),C2,"FALSE") which is giving me false for everything but I know ...
*September 16, 2009*

**math**

What is the greatest common factor of 102 and 214?
*August 16, 2009*

**Social Studies**

what are some of the challenges caused by immigration?
*May 20, 2009*

**American History**

1.True 2.A 3.B 4.D 5.A 6.True 7.c. 8.False 9.True 10False 11.A 12.True 13.True 14.D 15.A 16.C 17.False 18.C 19.True 20.true 21.C. 22.A. 23.B 23.B.
*May 14, 2009*

**American History**

1.True 2.A 3.B 4.D 5.A 6.True 7.c. 8.False 9.True 10False 11.A 12.True 13.True 14.D 15.A 16.C 17.False 18.C 19.True 20.true 21.C. 22.A. 23.B 23
*May 14, 2009*

**Science**

Why do non-polar substances tend to boil at relatively low temperatures?
*May 14, 2009*

**english**

how do you describe an authors writing style and structure?
*May 10, 2009*

**math**

18 inches is the answer to the first question because you must be 48 but you are only 30 now, you must grow 18 (48-30) 1,010 is the answer to the second question, 840+1,150=1990 but you can only eat 3,000-1,990 now which is 1,010 :)
*March 14, 2009*

**psychology**

1. The experimental rats were being raised in separate environments. One group lived in the traditional cage in a quiet, but well lighted room. They were supplied with plenty of food and water. The second group inhabited "Rat Disney Land." There were colorful ...
*March 13, 2009*

**college precal**

find all the values: sin2x- sqrt3cosx=0
*December 12, 2008*

**sci/275**

Review Ch. 5, The Flow of Energy Through Ecosystems. Then, complete Appendix C. Â· Post your response to the following: Identify the fruit or vegetable you selected and relate the second law of thermodynamics to the changes in energy observed in Appendix C. How ...
*December 9, 2008*

**Algebra check**

Where appropriate, include the approximation to the nearest ten-thousandth. 27.) log x = -3 I have the answer as 1 28.) 7 ^(4-9x)= 49 I have the answer as 2/9 29.) 8^x =5.2 not sure 30.) 1n x=5/8 not sure Are these answers right?
*December 1, 2008*

**Algebra help**

Thanks
*December 1, 2008*

**Algebra help**

State the domain and the range of each function. 22.) f(x)=e^x +3 the +3 is separated 23.) g(x)= 1n(x-1)
*December 1, 2008*

**Math help**

Okay x^2-4 = 4 x^2= 8 sqrt(x^2)= sqrt 8 x= 2.83 is this right?
*December 1, 2008*

**Math help**

Where appropriate, include the approximation to the nearest ten-thousandth. 31.) log(x-4)+ log(x+4)= log4 I have the answer as 4 Is this answer right?
*December 1, 2008*

**Algebra help 2**

27.) x=1 28.) I have x= 2/9 Not sure about the last two 29.) 8^x =5.2 not sure 30.) 1n x=5/8 not sure
*December 1, 2008*

**Algebra help 2**

Where appropriate, include the approximation to the nearest ten-thousandth. 27.) log x = -3 I have the answer as -3 28.) 7 ^(4-9x)= 49 I have the answer as 2 29.) 8^x =5.2 not sure 30.) 1n x=5/8 not sure Are these answers right?
*December 1, 2008*

**Algebra Thanks**

Thanks
*December 1, 2008*

**Algebra help bobpursley**

Where appropriate, include the approximation to the nearest ten-thousandth. 24.) 3^x= 1/81 I have x = 1/5 25.) logx 125 =3 I have x = 5 26.) log64 x = 1/2 I have x = 8 Are these answers right?
*December 1, 2008*

**Algebra**

Where appropriate, include the approximation to the nearest ten-thousandth. 24.) 3^x= 1/81 I have x = 1/5 25.) logx 125 =3 I have x = 5 26.) log64 x = 1/2 I have x = 8 Are these answers right?
*December 1, 2008*

**Algebra**

Where appropriate, include the approximation to the nearest ten-thousandth. 24.) 3^x= 1/81 25.) logx 125 =3 26.) log64 x = 1/2
*December 1, 2008*

**Algebra help**

State the domain and the range of each function. 22.) f(x)=e^x +3 23.) g(x)= In(x-1)
*December 1, 2008*

**Algebra**

actually the +3 is separte so it is f(x)= e^x +3 and the second problem is g(x)= In(x-1)
*December 1, 2008*

**Algebra**

State the domain and the range of each function. 22.) f(x)=e^x +3 23.) g(x)=1n(x-1)
*December 1, 2008*

**Algebra help**

Okay I got it log (8/3) = log 8 - log 3 = 2.079 - 1.099 = 0.98 log 24 = log (3x8) = log 3 + log 8 = 3.688 log 25 = log 5^2 = 2 log 5 = 2.138
*December 1, 2008*

**Algebra help**

If loga 8=2.079, loga 5=1.609, and loga 3=1.099, find the following? 19.) loga 8/3 is this 1.89? 20.) loga 24 Not sure 21.) loga 25 not sure how to do this
*December 1, 2008*

**Algebra help**

Thanks
*December 1, 2008*

**Algebra help**

Simplify: Note: The first letters next to log are the small letters. 16.) logr r 17.) logt t^4 18.) logb 1
*December 1, 2008*

**Algebra help**

Okay thanks
*December 1, 2008*

**Algebra help**

Express in terms of logarithms of a, b, and c: log(a^3b^2)/c How would I convert this?
*December 1, 2008*

**Algebra help**

Thanks
*December 1, 2008*