Saturday

August 29, 2015
Total # Posts: 896

**physics**

An electron starts at rest. Gravity accelerates the electron in the negative y direction at 9.80 m/s2 while an electric field accelerates it in the positive x direction at 3.80×106 m/s2. Find its velocity 2.45 s after it starts to move.
*December 15, 2010*

**Music**

Did will smith write his own music?
*December 15, 2010*

**College Chemistry-Please**

THANKS!!!
*December 4, 2010*

**College Chemistry-Please**

*Only need input not doing it for me. PLEASE QUESTION: Some hydrocarbon fuels have sulfur present and contribute to air pollution. When this solid sulfur is burned in the presence of oxygen, the noxious, toxic gas sulfur dioxide results. If there is .50 grams of sulfur and 1....
*December 4, 2010*

**Chemistry 111**

Thanks! I knew the formula but wasn't quite sure if i convert mL to L in the formula. I know that I must covert C to K and Torr to Atm for the equation.
*December 3, 2010*

**english**

did dwight d eisenhower achieved the american dream?
*November 22, 2010*

**math**

200 pages 20 divided by .10
*November 22, 2010*

**research and evaluation**

Give examples of both discrete and continuous data? What makes them different? Is the measurement of money continuous or discrete? Explain. Can discrete data be analyzed using the normal distribution? Why or why not?
*November 18, 2010*

**research and evaluation class**

describe joint probability for independent events and give an example of how you would calculate it. How is this different than conditional probability? The following payoff table gives the return on three alternative business decisions based on three possible scenarios –...
*November 18, 2010*

**geometry**

find AB if BD is a median of triangle ABC
*November 16, 2010*

**algebra**

What is x/3=7/6
*November 15, 2010*

**business**

describe why it is important to consider each domain in the study of adult development
*November 15, 2010*

**Science**

When learning about types of energy what are the types of energy for: A. a lit match, yo-yo, bicycle, trampoline, apple, lightbulb, cooker, moving bullet, nuclear bob, hairdryer, solar panel,campfire, car, human, tv, mobile phone, thanks
*November 4, 2010*

**9th grade**

What is the total supply for US - silk, coffee, or bananas or all of them?
*November 2, 2010*

**chemical principal**

a chemist weidghed 1.25g of sodum hydroxide ,placed it in a volumetric flask and then added enough deionized water to bring the total volume to 250mL. How many moles of NaOH were added to the volumetric flask
*November 2, 2010*

**chem--please help me!!**

when a 25.0 mL sample of an unknown acid was titrated with a 0.100 M NaOH solution. Determine Ka for the unknown acid. Volume NaOH = 12.5 mL; pH=3.80 please help me explain in details!!!
*October 30, 2010*

**spanish**

presidencial día esté Thank you for the help.
*October 26, 2010*

**spanish**

Hoy en dia pavos SON perdonados en caso de que el pavo no este disponible para el perdón presipdencial. Is SON correct in this sentence and if it is, why?
*October 26, 2010*

**chem**

35.00 grams of propane C3H8 are burned. How many grams of CO2 ARE PRODUCED
*October 26, 2010*

**algebra**

I get confused when solving for some of the fractions in my problem. how would you solve for 1+(-2/(sqroot 5))? I just need a refresher on the order of operations for it. Thanks!
*October 25, 2010*

**college**

describe why it is important to consider each domain in the study of Adult Development?
*October 23, 2010*

**ECONOMICS HELP PLEASE **

i need to find any sources (articles) dealing with factory orders, employment levels, foreign companies, and factory closures... because I need to write a page of each one of them and what it means also...please help me on it
*October 22, 2010*

**math**

If f(x)=(3x+6)^–1, find f'(x).
*October 21, 2010*

**math**

If f(x)=(3x+6)–1, find f'(x).
*October 21, 2010*

**Chemistry **

27.0 mL of 1.00 M HClO4 are mixed with 27.0 mL of 1.00 M LiOH in a coffee cup calorimeter. The calorimeter constant is 28.1 J/C. Both were initially at 21.31 C. Calculate delta H(rxn) in kJ/mol for the reaction.
*October 20, 2010*

**statistics**

What would be the range of the scores 71, 37, 48 from the same set with 95% cofidence level?
*October 17, 2010*

**chemistry**

.819 mol CO2= 30604 g CO2 X= 3.604 g CO2/100.09 g/molCaCO3= .036 mol CaCO3 Y=3.604 g CO2/84.32 g/mol MgCO3= .043 mol MgCO3 I'm stuck. I don't think I did it right.
*October 17, 2010*

**chemistry**

Thank you. But could you explain how you got that equation for solving for x and y? I need to prove my answer.
*October 17, 2010*

**chemistry**

A mixture of CaCO3 and MgCO3 weighing 7.85 g was reacted with excess HCL. The reactions are CaCO3+2HCL=CaCl2+H2O+CO2 and MgCO3+2HCl=MgCl2+H2O+CO2. The sample reacted completely to produce 1.94 L CO2 at 25 degrees C and 785 torr. Calculate the percentage of CaCO3 and MgCO3 in ...
*October 17, 2010*

**Chemistry**

Given one of the following solution: 50.00mL of 0.10M of K2CrO4 answer the following. 1. How do you prepare the solution? 2. What volume (mL) of your solution contains 5.00X10(-4) moles of the solute? 3. What volume of your solution contains 1.00g of the solute? 4. What is the...
*October 17, 2010*

**Psy 340**

What are some examples of theories concerning sexual orientation, hormones, and the brain? Which one do you feel is most accurate? Why?
*October 14, 2010*

**statistics**

Sample size is 24, Mean rate of 6.50%, Standard Deviation is 1.20. Calculate 90% of confidence interval
*October 14, 2010*

**engish (beowulf)**

how does the battle between Beowulf and the dragon show the inequalities of the Anglo saxon class system?
*October 11, 2010*

**Business**

How did U.S manufacturers become vulnerable to offshore outsourcing?
*October 10, 2010*

**business**

•In a managers’ meeting, discuss the impact of the well-publicized ethical lapses in recent years by several large companies.
*October 4, 2010*

**algebra**

2v+18=16-4(v+7)
*October 3, 2010*

**physics**

The pendulum swings past the pole 14 times in 21 seconds. The weight of the bob is 10g. Calculate the period?
*September 29, 2010*

**Algebra**

Write a polynomial for the area between two concentric circles if the radius of the outer circle is two less than three times the radium of the inner circle.
*September 28, 2010*

**Algebra**

I have 18 bills that equal $100.00 (5-$10 bills, 9-$5 bills, 3-$1 bills, 1-$2 bill). How can this be expressed in an algebric equation?
*September 28, 2010*

**physics**

A tennis player aims to serve the ball horizontally when their racquet is 2.5 m above the ground. The distance from the player to the net is 15.0 m and the net is 0.9 m high (a) What is the minimum speed with which the ball must leave the racquet if it is to just clear the net...
*September 27, 2010*

**adult education**

do i use is / are invited? You and a friend or 2 is invited to my Garage Sale.
*September 26, 2010*

**algebra**

Find the indicated outputs for f(x)=4x^2 -4x f(0) f(-1) f(2)
*September 13, 2010*

**Algebra II**

its supposed to say sketch the graph of the x and y and then the -2¡Ýt¡Ý5 should be -2 < (or equal to) t < (or equal to) 5
*September 12, 2010*

**Algebra II**

I sketched the graph for this but I don't know how to find B and C: x=t-2 Sketch the graph of: for -2¡Üt¡Ü5 Y=t^2-4t-3 B. State the domain of x and the range of y. c. Write y as a function of x.
*September 12, 2010*

**Algebra II**

Find the quadratic equation x^2+px+q=0 if the roots a and b are the dimensions of a rectangle whose diagonal is 8 and area is 26
*September 12, 2010*

**Algebra II**

Given f(x)=x^3-7x^2+6x+14, what is the a. sum of its zeros? b. product of its zeros? c. sum of the squares of its zeros?
*September 12, 2010*

**Algebra II**

The ¡Ý is suposed to be a > or equal to and the upside down ! isn't supposed to be there.
*September 12, 2010*

**Algebra II**

Solve for x. Give your answer using interval notation. a. |2x-3|¡Ý 12 b. 9-2|x+1|<-3
*September 12, 2010*

**macro**

an isolated earthquake at the begining of the year desroyed part of the nation capital stock, and the nations govermnet significantly reduced its purchases of goods and services
*September 8, 2010*

**algebra**

How many different license plates are possible using the letters A and B,but there can never be 2 A's next to each other.
*August 30, 2010*

**Science**

How Does Earth's atmosphere make conditions on Earth suitable for living things?
*August 25, 2010*

**STASTICS**

If the median home price in your area has decreased in your area in the last 2 years, how does this differ from the mean price in your area? Please explain why and include examples.
*August 24, 2010*

**Math**

What would be the correct answer to this question? How do you find out the unknown factor in a multiplication problem?
*August 23, 2010*

**Maths**

Please help!!! The mass of a particular substance is known to grow exponentially at a rate of 1.5% per day. Its initial mass was 230 grams and, after t days, it weighed 325 grams. The equation modelling this growth is 230×1.015 t = 325. ...
*August 14, 2010*

**statistics**

Formulate a hypothesis statement and perform the five-step hypothesis testing procedure
*August 8, 2010*

**MTH233/statistics UOP**

You work for the public relations department of the Social Security Administration. In an effort to design better advertising campaigns, your department decides to conduct a survey to find out the opinions people in the United States have about the Social Security system. One ...
*August 7, 2010*

**MTH233/statistics UOP**

. Hypothesis Testing o Please complete the following 5-step hypothesis testing procedure in your Learning Teams: A simple random sample of forty 20-oz bottles of Coke® from a normal distribution is obtained and each bottle is measured for number of ounces of Coke® in ...
*August 1, 2010*

**MTH233/statistics UOP**

Please complete the following 5-step hypothesis testing procedure in your Learning Teams: A simple random sample of forty 20-oz bottles of Coke® from a normal distribution is obtained and each bottle is measured for number of ounces of Coke® in the bottle. The sample ...
*July 31, 2010*

**MTH233/statistics UOP**

A car company says that the mean gas mileage for its luxury sedan is at least 21 miles per gallon. You believe the claim is incorrect and find that a random sample of five cars has a mean gas mileage of 19 miles per gallon and a standard deviation of 4 miles per gallon. Assume...
*July 27, 2010*

**MTH233/statistics UOP**

Clickfraud has become a major concern as more and more companies advertise on the Internet. When Google places an ad for a company with its search results, the company pays a fee to Google each time someone clicks on the link. That’s fine when it’s a person who’...
*July 27, 2010*

**MTH233/statistics UOP**

Industry 1980 1997 Agriculture 290 727 Mining 994 586 Construction 4,473 5,513 Manufacturing 21,165 18,633 Transportation 4,623 6,247 Trade 20,258 28,813 Finance and Insurance 5,295 7,367 Services 17,186 37,380 • • The table above shows the number of employees, in ...
*July 22, 2010*

**MTH233/statistics UOP**

• Best Practices has the following caveats: • • Use a bar chart to show the frequencies of a categorical variable. • • Use a pie chart to show the proportions of a categorical variable. • • Preserve the ordering of an ordinal variable. •...
*July 22, 2010*

**MTH233/statistics UOP**

A manager has portioned the company’s sales into six districts: North, East, South, Midwest, West and International. What graph or table would you use to make the points below in a presentation for management? 1. A figure that shows the slightly more than half of all ...
*July 22, 2010*

**MTH233/statistics UOP**

Find one quantitative and one qualitative data set from a reliable source and determine the best way to present that data graphically. Show your graph and explain your reasoning for choosing this presentation method. When might the reported median of data be more appropriate ...
*July 22, 2010*

**Nutrition, Health, and Safety for Young Children **

What is a good thesis statement which discuss the overall wellness of young children and the role an Early Childhood Education Setting can play in a young child's health and well-being?
*July 18, 2010*

**algebra**

12-6x=3[2-4(x-6)] I KNOW THE ANSWER IS 11 BUT EVERYTIME I DO THE STEPS IT COMES OUT WRONG. COULD YOU SHOW ME DETAILED STEPS? Thankyou.
*July 18, 2010*

**math**

11.6% make it a fraction and a decimal
*July 6, 2010*

**verbs**

He had come downstairs to find her already gone
*July 3, 2010*

**algebra**

operations can you associate with coefficients
*June 11, 2010*

**Chemistry**

Draw the skeletal structure for (CH3)3CCH2COOCH3
*June 2, 2010*

**Chemistry**

What is the correct IUPAC name for 4-methyl-3-propylheptane
*June 2, 2010*

**economics**

1)Robert received a $100 gift certificate to a bookstore a year ago. The economy has been in an inflationary period for the last year. This gift certificate is A. not expressed in either real or nominal terms since it is not money. B. adjusted in terms of the CPI. C. expressed...
*May 25, 2010*

**economic**

are u sure there right
*May 25, 2010*

**economic**

1)Robert received a $100 gift certificate to a bookstore a year ago. The economy has been in an inflationary period for the last year. This gift certificate is A. not expressed in either real or nominal terms since it is not money. B. adjusted in terms of the CPI. C. expressed...
*May 25, 2010*

**economics**

1)Robert received a $100 gift certificate to a bookstore a year ago. The economy has been in an inflationary period for the last year. This gift certificate is A. not expressed in either real or nominal terms since it is not money. B. adjusted in terms of the CPI. C. expressed...
*May 25, 2010*

**Macro economics**

1)Robert received a $100 gift certificate to a bookstore a year ago. The economy has been in an inflationary period for the last year. This gift certificate is A. not expressed in either real or nominal terms since it is not money. B. adjusted in terms of the CPI. C. expressed...
*May 25, 2010*

**Macroeconomics**

to raise funds at providing more support for public schools,a state government has just imposed a unit excise tax equal to $4 for each monthly unit of telephone services sold by each telephone company operating in the state. The diagram below depicts the position of the demand...
*May 24, 2010*

**Macroeconmics**

to raise funds at providing more support for public schools,a state government has just imposed a unit excise tax equal to $4 for each monthly unit of telephone services sold by each telephone company operating in the state. The diagram below depicts the position of the demand...
*May 24, 2010*

**com150**

when writing an Apa essay do you include the words "introduction and conclusion" in your essay. Or is it just implied?
*May 22, 2010*

**science**

If an element has a gray luster and can be drawn into a wire, is it a nonmetal, metal, gas, or an alloy?
*May 19, 2010*

**science**

Are Flourine, oxygen, Sulfur and Phosphorus metals or nonmetals? I think they are nonmetals!!!
*May 19, 2010*

**science**

Are Iron and Gold metals or nonmetals?
*May 19, 2010*

**science**

In what form are most elements (in the periodic table) in nature? What does this mean?
*May 14, 2010*

**science**

I was to classify these elements as metals or nonmetals----iron, cobalt, sodium, oxygen,chlorine, and helium. This is how I classified them. Am I correct? The metals are iron, cobalt and sodium. The nonmetals are oxygen, chlorine and heluim.
*May 14, 2010*

**science**

If solid copper sulfate is mixed with water, what is formed? A mixture, a solvent, a solution or both a mixture and a solution?
*May 12, 2010*

**science**

A substance seems to completely fill a container, but more can be forced in. Is the substance a solid, liguid, gas or none of these????
*May 12, 2010*

**History**

I need to know if there is a site that lists federal presidential campaign financing laws, legal & illegal. All I can find is sites that have box diagrams. Thanks
*May 11, 2010*

**physical science**

which of the following properties of light support the wave theory; existence of photons, can be reflected, can be refracted?
*May 10, 2010*

**physical science**

which substance is a base in this equation, Ba(OH)2 + 2 HNO3
*May 10, 2010*

**geography**

I have to put indicators of measuring development in countries in order of importance they are :- literacy rates number of people per doctor, gross national product, % of population access to clean water, population density, % people employed in agriculture, % population ...
*May 10, 2010*

**Trig. **

In right triangle ABC, C is the right angle and sinA=(radical 3/2). What is the value of csc B?
*May 8, 2010*

**Logs**

Solve for x. log5x=(1/2). Express the answer to the nearest hundredth.
*May 8, 2010*

**Geometry **

In triangle ABC, side a=7, b=6, and c=8. Find the measure of angle B to the nearest degree.
*May 8, 2010*

**Math**

thanks for your help
*May 2, 2010*

**Math**

I'm confused.Can someone tell me if I have done this correct.I'm trying to get the average using a weighted scale: TOTAL GRADES: WEIGHT 90% ---------- 5% 100% ---------15% 95% --------- 15% 90% -----------5% 94.5% --------60% I multiplied the total grade by the percent...
*May 2, 2010*

**Statistics**

I'm confused.Can someone tell me if I have done this correct.I'm trying to get the average using a weighted scale: TOTAL GRADES: WEIGHT 90% 5% 100% 15% 95% 15% 90% 5% 94.5% 60% I multiplied the total grade by the percent, then added the percent. But I get 109.20 as a ...
*May 2, 2010*

**science**

what does FDA stand for in Australia, or what is it called in Australia?
*May 1, 2010*

**science**

Dr Bob What does FDA stand for?
*May 1, 2010*

**chemistry**

what does FDA stand for?
*May 1, 2010*

**chemistry**

In the synthesis of Aspirin, would you eat your own aspirin crystals? If not, provide three (3) reasons why not?
*May 1, 2010*