Saturday

December 10, 2016
Total # Posts: 1,582

**Physics**

Okay. So first for part b I know the formula I'm going to need is v=wr. That will relate the linear speed to the angular speed and we are given the radius. I'm still a little stuck though on the angular speed. I found the circumference of the wheel to be 10pi cm, and ...

*July 27, 2010*

**Physics**

n early method of measuring the speed of light makes use of a rotating slotted wheel. A beam of light passes through one of the slots at the outside edge of the wheel, travels to a distant mirror, and returns to the wheel just in time to pass through the next slot in the wheel...

*July 27, 2010*

**chemistry**

A voltaic cell is contructed in which a copper wire is placed in a 1.0 M Cu(NO3)2 solution and a strip of gold i placed in a 1.0 M AuNO3 solution. The measured potential of the cell is found to be 1.36V and the copper electrode is negative. The Ered for the Cu2+/Cu half- cell ...

*July 17, 2010*

**chemistry**

How do you determine if a salt is behaving as an acid or base?

*June 28, 2010*

**Maths**

A square has an area of S^2 and a regular hexagon has a perimeter of T. If p is the perimeter of the square and h is a side of the hexagon, then find h+p in terms of S and T.

*June 19, 2010*

**computer science**

Pseudo code: Input a list of employee names and salaries, and determine the mean (average) salary as well as the number of salaries above and below the mean

*June 17, 2010*

**college**

is project management designed to transfer power from the line managers to the project manager?

*June 13, 2010*

**Chemistry**

what is the precipitate formed when benedicts solution reacts with glucose? give the net ionic equation for the reaction.

*June 7, 2010*

**Calculus**

Solve the following initial value problem and determine the interval where the solution exists. dy/dt = 2ty^2 y(0) = y_0 Textbook answer is: When y_0 <> 0, then y = 1/(1/y_0 - t^2). When y_0 = 0, then y = 0 When y_0 > 0, the interval where solution exists is |t| < ...

*June 1, 2010*

**math**

18.5

*May 26, 2010*

**algebra**

Could someone please just basically describe how to solve rational equations? I don't understand them. :(

*May 17, 2010*

**Chemistry**

my ap chem teacher has been absent for the past two weeks and part of the notes her sub gave us to copy says that In the equation HC2H3O2 + H20 <--> C2H3O2(- charge) + H3O(+ charge) HC2H3O2 is an acid H2O is a base C2H3O2(- charge) is the conjugate base and H3O(+ charge...

*May 15, 2010*

**Philosophy **

Which of the following ideas is important in virtue ethics? a) community b) duty c) natural human inclinations d) pleasure is it a???

*May 13, 2010*

**English **

In Homer Odyssey - According to Odysseus what is the cause of the doom he and his men face on the Island of Cicones?

*May 12, 2010*

**Economics **

I'm supposed to use a price index for GDP chart to find the GPD deflator of 1983 how do i do that? To get the chart google nipa bea chart,click the first choice, and select tale 1.1.4

*May 9, 2010*

**Schindler's List Essay**

You also only make mention of the SS, whereas Schindler had to deal with many other people from the German army, like the Gestapo, Members of the Secondary command, and general German army soldiers (Nazis) all of whom are depicted in the film. Also you haven;t made any mention...

*May 8, 2010*

**Schindler's List Essay**

I would probably give it a 20 out of 50. This essay has a few good ideas, but overall contains much spelling and grammatical errors, and is overall poorly structured. By this I mean there are no links or comparisons between ideas, instead they are just tossed in randomly over ...

*May 8, 2010*

**pheonix university**

Please select one of the following thesis statements: 1. America's top corporations are successful for a variety of reasons. 2. Scientists have discovered human remains thought to be more than 2 million years older than Lucy, a skeleton found in Ethiopia. 3. A healthful ...

*May 4, 2010*

**Math**

600,000 - x / 600,000 = .10 solve for x.

*May 1, 2010*

**ecology**

Air pollution impacts us on a global level. What are the implications of global warming?

*April 28, 2010*

**ecology**

Give examples of how humans have increased their food supply and what effects these methods have on the environment overall.

*April 28, 2010*

**English **

What kind of emphatic statement?

*April 27, 2010*

**English **

What is the significance of the exclamation mark at "And 'barn' is only a noun-no verb or subject has entered into the sentence yet!"

*April 27, 2010*

**spanish**

It could be; what jeans?

*April 27, 2010*

**ENGLISH**

1. For surgeon it’s not just wake up at 6:00 am in the morning,take a shower, drink a coffee, eat a toast, get into his car and go to work,than finish at 5:00 pm, go home to his family, eat dinner and have a good sleep. 2. dont’t - correct is don’t 3. lazy - ...

*April 25, 2010*

**chem**

so if theres no ions answer would be ch3oh and h20

*April 24, 2010*

**chem**

so would there be an equation?

*April 24, 2010*

**chem**

In a solution prepared by mixing CH3OH with H2O the major species pesent are 1. a. CH3+, OH, and H2O 2. b. CH3O, H+, and H2O 3. c. CH3OH and H2O 4. d. CH3OH, H+, and OH I know i have to get an equation having trouble doing that!! please help!!

*April 24, 2010*

**Chem**

Balance the chemical equation given below, and determine the number of grams of MgO needed to produce 15.0 g of Fe2O3. _MgO(s)+_Fe(s)->_Fe2O3(s)+_Mg(s) 1. a. 11.4 g 2. b. 3.78 g 3. c. 1.26 g 4. d. 0.0877 g I got equation balanced 3,2,1,3 just having trouble on how to find ...

*April 24, 2010*

**Chem**

Given the following hypothetical reaction: 2 E(g) + F(g) + G(g) products. If the rate law is: Rate = k[E]2[F]-1, what is the overall order of reaction? 1. a. zero 2. b. first 3. c. second 4. d. third

*April 24, 2010*

**Chemistry**

Which element can form more than one kind of monatomic ion? 1. a. Se 2. b. Sn 3. c. S 4. d. Sr

*April 24, 2010*

**math**

justify that15 is the sum of eachrow of a 3X3 magic square using the number 0-9. Find the sume of all the numbers. What is the of eachrow in a 4X4 magic square that uses the numbers 1-16.

*April 22, 2010*

**computer science**

c++ program question write a program that uses a loop to display the characters for each ascii code 32 through 127. display 16 characters on each line with one space between characters in c++

*April 21, 2010*

**Chemistry**

Delta H = 2800 Kj Delta S = -260 J Delta Grxn = 2800-(15+273)(-260/1000) = 2874.88 Non-Spontaneous

*April 20, 2010*

**statistics please help!**

A total of 8,000 dollars is invested at anunual interest rate of 1%. Find the balance after 1.5 years, if the interest is compounded annually. using A=p(1+r/n)^nt

*April 12, 2010*

**Chem**

Delta H = 2800 Kj Delta S = -260 J Delta Grxn = 2800-(15+273)(-260/1000) = 2874.88 Non-Spontaneous

*April 7, 2010*

**science**

ms.sue would it be compressional i am not really sure could you please tell me if i am right thank you

*April 2, 2010*

**science**

A wave that causes the particles of the medium to vibrate parallel to the direction the wave travels

*April 2, 2010*

**Physical Chemistry**

The presence of a catalyst provides a reaction pathway in which the activation energy of a certain reaction is reduced from 192 kJ·mol-1 to 72 kJ·mol-1. (a) By what factor does the rate of the reaction increase at 281 K, all other factors being equal? (b) By what...

*April 1, 2010*

**Math**

Find (if possible) the trigonometric function of the quadrant angle. sec 3pi/2 My answer was 0. Am I correct?

*March 30, 2010*

**Math(Please help)**

What is the domain? Use a graphing utility to determine the intervals in which the function is increasing and decreasing and approximate any relative maximum or minimun values of the function. g(x) = 12 Ln x / x My answer was: Domain = (12,0) decreasing = (3,-2) and ...

*March 30, 2010*

**NEED HELP! CHEMISTRY**

Three electrolytic cells containing solutions of CuNO3, Sn(NO3)2, and Fe(NO3)3, respectively, are connected in series. A current of 2.2 A is passed through the cells until 3.10 g of copper has been deposited in the cell. (a) What masses of tin and iron are deposited? found ...

*March 29, 2010*

**Math**

What is the domain? Use a graphing utility to determine the intervals in which the function is increasing and decreasing and approximate any relative maximum or minimun values of the function. g(x) = 12 Ln x / x My answer was: Domain = (12,0) decreasing = (3,-2) and increasing...

*March 29, 2010*

**Physical Chemistry**

Three electrolytic cells containing solutions of CuNO3, Sn(NO3)2, and Fe(NO3)3, respectively, are connected in series. A current of 2.2 A is passed through the cells until 3.10 g of copper has been deposited in the cell. (a) What masses of tin and iron are deposited? tin g ...

*March 29, 2010*

**Physical Chemistry**

i thought you were saying to divide by the 1 equivalent?

*March 29, 2010*

**Physical Chemistry**

so for the 1 equivalent weight of Ag i just divide molar mass 107.87 by 1.009 and get 106.8?? is the 1 equivalent weight in material in grams?

*March 29, 2010*

**Physical Chemistry**

A total charge of 97.4 kC passes through an electrolytic cell. Determine the quantity of substance produced in each of the following cases. (a) the mass (in grams) of silver metal from a silver nitrate solution ?g (b) the volume (in liters at 273 K and 1.00 atm) of chlorine ...

*March 29, 2010*

**Math(Help!!)**

What is the domain? Use a graphing utility to determine the intervals in which the function is increasing and decreasing and approximate any relative maximum or minimun values of the function. g(x) = 12 Ln x / x My answer was: Domain = (12,0) decreasing = (3,-2) and increasing...

*March 29, 2010*

**Math(Please help)**

use the given information to solve the triangle. C= 85 degrees 20' a = 35 c = 50 I know that I have to find A,B,b but I do not know how to do this.

*March 27, 2010*

**Math**

use the given information to solve the triangle. C= 85 degrees 20' a = 35 c = 50 I know that I have to find A,B,b but I do not know how to do this.

*March 27, 2010*

**physics**

A steam turbine operates between hot and cold reservoir temperatures of 538 degrees celcius and 92.1 degrees celcius respectively. If heat is supplied at a rate of 238 MW, what maximum amount of power could the turbine deliver?

*March 27, 2010*

**Math**

thanks!

*March 25, 2010*

**Chemisty/Bio**

Is a environment that is hypoxic or anoxic the same as acidic?? I am a little confused how the two relate to each other?

*March 24, 2010*

**physics**

A pigeon in flight experiences a force of air resistance given approximately by F=bv2, where V is the flight speed and B is a constant. A) In terms of SI units, what are the units for the constant "b"? B) What is the largest possible speed of the pigeon if its ...

*March 23, 2010*

**Math(Correction)**

Use the given function values and trigonometric identities (including the relationship between a trigonometric function and its cofunction of a complementary angle) to find the indicated trigonometric functions. sec Q = 5 tan Q = 2sqrt6 a) cos Q b) cotQ c) cot(90 degrees - Q) ...

*March 23, 2010*

**Math(Correction)**

Error

*March 23, 2010*

**Math(Correction)**

Use the given function values and trigonometric identities (including the relationship between a trigonometric function and its cofunction of a complementary angle) to find the indicated trigonometric functions. sec Q = 5 tan = 2sqrt6 a) cos Q b) cotQ c) cot(90 degrees - Q) d...

*March 23, 2010*

**Math(Correction)**

Use the given function values and trigonometric identities (including the relationship between a trigonometric function and its cofunction of a complementary angle) to find the indicated trigonometric functions. Sorry for the mistake. They are two seperate functions and i need...

*March 23, 2010*

**Math**

Use the given function values and trigonometric identities (including the relationship between a trigonometric function and its cofunction of a complementary angle) to find the indicated trigonometric functions. sec Q = 5 tan = 2sqrt6 a) cos Q b) cotQ c) cot(90 degrees - Q) d...

*March 23, 2010*

**grant preposals**

Distinguish between a project-wide evaluation plan and an objective-oriented evaluation plan.

*March 23, 2010*

**Pre-Cal(Please help)**

Error

*March 23, 2010*

**Pre-Cal (Please help)**

Identify any asymptotes of the graph. y = 1.08^5x I know that there is a horizontal asymptote but I do not know how to find it.

*March 22, 2010*

**Pre-Cal**

Identify any asymptotes of the graph. y = 1.08^5x I know that there is a horizontal asymptote but I do not know how to find it.

*March 22, 2010*

**Pre-Cal**

Identify the following features of the graph of g(x) = (3/2)^x+2 A) Asymptotes B) Intercepts C) Increasing or decreasing Once I graph this on my calculator, how can I find these?

*March 22, 2010*

**Pre-Cal**

Identify the following features of the graph of g(x) = (3/2)^x+2 A) Asymptotes B) Intercepts C) Increasing or decreasing I really do not know how to find these

*March 21, 2010*

**Pre-Cal**

Identify any asymptotes of the graph. y = 1.08^5x

*March 21, 2010*

**Pre-Calculus**

Identify the following features of the graph of g(x) = (3/2)^x+2 A) Asymptotes B) Intercepts C) Increasing or decreasing I really do not know how to find these

*March 21, 2010*

**Pre-Cal**

Find the inverse of the function f(x) = 3^x+2

*March 19, 2010*

**Math**

When graphing two linear equations, what is the significance of the intersection of the two graphs, and if there is no intersection?

*March 18, 2010*

**Chemistry**

So then because the valences are diff on each side that means its a redox reaction?? And so N gained eletrons does that mean it's the NO3 ^-1 that is the oxidizing agent or the N in NH3?? this stuff is tripping me up.....can ou explain it any more for me? sorry...im a ...

*March 18, 2010*

**Chemistry**

I'm having a hard time with Redox and how to figure out which is redox Select all of the reactions that are redox reactions. I) Ca + 2H2O Ca(OH)2 + H2 II) CaO + H2O Ca(OH)2 III) Ca(OH)2 + H3PO4 Ca3(PO4)2 + H2O IV) Cl2 + 2 KBr Br2 + 2 ...

*March 18, 2010*

**Chemistry**

I think these I know how to do ....just want someone to check..still sorta mixed up on the first question. Thanx For the following reaction, what is the correctly balanced reduction half-reaction? Fe(OH)3(s) + Cu(s) → Fe(s) + Cu+(aq) + OH-(aq) A. e- + Fe(OH)3(s) → ...

*March 18, 2010*

**Chemistry**

I'm having a hard time with Redox and how to figure out which is redox Select all of the reactions that are redox reactions. I) Ca + 2H2O Ca(OH)2 + H2 II) CaO + H2O Ca(OH)2 III) Ca(OH)2 + H3PO4 Ca3(PO4)2 + H2O IV) Cl2 + 2 KBr Br2 + 2 KCl...

*March 18, 2010*

**Calculus**

z=2 square root of 2

*March 17, 2010*

**English**

He hurt his fist trying to open the window.

*February 25, 2010*

**Math**

Find the coordinates of the turning point and determine wether it is minimum or maximum. y=xlnx-2x The answer in the book says the co-ordinates are (e,-e), the closest I have come is (1/lnx,-1/lnx) which works if 1/lnx=e, but I don't think that it does. This question is in...

*February 25, 2010*

**Chemistry**

How do I know which of these .1M solutions will have a pH less than 7? KF, NH4I, NaH2PO4, Fe(NO3)3 I am guessing all but KF is acidic...but if someone could confirm this and explain why that would be helpful

*February 24, 2010*

**P. Chemistry **

If given the Ka or Kb and pKa and pKb, how do you find the initial concentration of a weak acid/base in a solution given the pH? Is there an equation for this? I can't find anything in my notes and am not sure what to look for.

*February 23, 2010*

**P. Chemistry **

A student added solid K2O to a 750.0 mL volumetric flask. The solid was dissolved in water and then the flask filled with water to the mark. This formed 750.0 mL of the initial KOH solution. 20.0 mL of the initial solution was transferred to another flask and diluted to 200.0 ...

*February 23, 2010*

**Accounting**

2. b

*February 22, 2010*

**physisc! URGEENT**

The current is 1.9 m/s. A person can swim 0.7 m/s. What is the best angle for the swimmer so that it is swept downstream the shortest distance possible?

*February 21, 2010*

**Mega Stat**

How do you know the p-value on megastat. On minitab It looks like it gets a different p-value than megastat. I got a number from megastat of 2.35E10 and on minitab it was 0.000.

*February 20, 2010*

**statistics**

How do you know the p-value on megastat. On minitab It looks like it gets a different p-value than megastat. I got a number from megastat of 2.35E10 and on minitab it was 0.000.

*February 20, 2010*

**science**

describe a pond and indicate the types of interdependence of living things in it

*February 18, 2010*

**science**

describe a pond and indicate the types of interdependence of living things in it

*February 18, 2010*

**Chem**

When 0.10 g of insulin is dissolved in 0.200 L of water, the osmotic pressure is 2.30 Torr at 20°C. What is the molar mass of insulin? I tried using the van't hoff equation, converting Torr into atm; but not sure how to do it. my teacher didn't really explain this ...

*February 15, 2010*

**statistics**

Number sampled is 1,000 and mean is 7.2 on a scale from 1-10 how do I determine standard deviation. Can we answer this with using the sampling distribution of the sample proportion?

*February 13, 2010*

**statistics**

If sample number is 1,000 and mean is 7.2 on a scale from 1-10 how do I determine standard deviation.

*February 13, 2010*

**MA 005**

The width of a rectangle is 3ft. less than the length. The perimeter is 62ft. Find the length and the width od the rectangle.

*February 12, 2010*

**criminal justice**

During the middle Ages, defendants could avoid serving a harsh penalty if they were granted

*February 8, 2010*

**business**

Explain the difference between fiscal policy and monetary policy. Discuss how each of these approaches can be used to influence the state of the economy.

*January 31, 2010*

**algebra**

Joe's larger tank is completely filled with water. He takes water from it to completely fill the small tank. Determine how many cubic inches of water will remain in the larger tank The larger tank is 12 x 30 x 16 and the smaller tank is 6 x 12 x 9.

*January 30, 2010*

**Math**

The average of a set of five different positive integers is 360. The two smallest integers in the set are 99 and 102. What is the largest possible integer in this set?

*January 29, 2010*

**math**

(5)(3/5)(x+2)=(5)(x-4) 3(x+2)=(5)(x-4) 3x+6=5x-20 3x+6+20=5x-20+20 3x+26=5x 3x-3x+26=5x-3x 26=2x x=13

*January 29, 2010*

**Physics **

A rocket is launched straight up with constant acceleration. Four seconds after liftoff, a bolt falls off the side of the rocket. The bolt hits the ground 7.10 seconds later.

*January 28, 2010*

**Physics**

A rocket is launched straight up with constant acceleration. Four seconds after liftoff, a bolt falls off the side of the rocket. The bolt hits the ground 7.10 later. What was the rocket's acceleration?

*January 28, 2010*

**math**

find all possible values of x such that, when the five numbers x, 14, 11, 6, 17 are arranged in order, the mean is equal to the median

*January 28, 2010*

**math**

find all possible values of x such that, when the five numbers x, 14, 11, 6, 17 are arranged in order, the mean is equal to the median

*January 28, 2010*

**fallacy**

It takes someone with a really big heart to give to our charity , and you seem like someone who cares more than most . ...

*January 17, 2010*