Tuesday

October 21, 2014

October 21, 2014

Total # Posts: 162

**chemistry**

calculate the velocities of electrons with de Broglie wavelengths of 1.0x10^2nm and 1.0nm
*September 23, 2010*

**chemistry**

how many grams of hydrogen are produced when 1gram of aluminum is reacted?
*September 19, 2010*

**chemistry**

Using the balances eqution and assuming all other reagents are in excess, how many hydrogen would be produced when 1.00 g of aluminum react?
*September 15, 2010*

**MTH233/statistics UOP**

Find an example of application of Normal Distribution (or approximately Normal Distribution) in your workplace or business (or any other business that you are familiar with). Prove that the variable has the characteristics of a Normal Distribution. Recall that the variable ...
*August 1, 2010*

**Child Psychology**

if there is concern about a neural tube defect in the fetus, which of the following tests is least usable? Ultrasound Blood test AFP assay Fetoscopy exam
*July 13, 2010*

**Child Psychology**

frist I said, an innate process that needs only nurting to unfold. but not sure. Are it could be within Sally's zone of proximal development. I look up the meaning of proximal development.and I think that is it.
*July 13, 2010*

**Child Psychology**

Sally can tie her shoes but only with her mother's help. This fact suggests that tying shoes is
*July 13, 2010*

**math**

What are three different ratios for 5 circles and 4 squares?
*April 28, 2010*

**math**

What is the number directly below 99 when the triangular array below is continued? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
*March 7, 2010*

**math**

convert each of the following rational numbers to the form a/b, where a and b are integers and b not equal to 0.
*March 7, 2010*

**math**

Write each of the following in the form a sqrt b where a and b are intergers and b has the least value possible
*March 5, 2010*

**Algebra**

Thank you so much for your help! :)
*December 18, 2009*

**Algebra**

Okay, so I am stuck on solving this using the substitution method. The mortgage department of the company is selling two model homes that are located on the same block. The square footage, as well as the type of model, determines the cost of these homes. e) The second home has...
*December 18, 2009*

**Algebra**

Scenario #1: You handle internal accounting for Anderson Homes, a land/housing developer. The company purchased land in Central Arkansas and developed 200 acres. Two orders were recently placed with a nursery by the company’s landscapers. The invoices from the orders do ...
*December 17, 2009*

**word problems**

Paul read 20 pages of a book in 15 minutes. (a) What is Paul’s reading rate of pages per minute? (b) If he continues to read at the same rate, how many pages will he read in 1 hour?
*November 14, 2009*

**10th grade algebra**

2b/4 + b/3 = 10 you find a common denominator, which is twelve so multiply 2b/4 by 3 and the b/3 by 4, we then get 6b+4b/12 = 10 to get rid of denominator we times both sides by twelve to get 10b = 120 to get rid of b you divide both sides by 10 to get: b = 12 (don't ...
*November 12, 2009*

**10th grade algebra**

sorry subtract 2x from both sides my mistake
*November 12, 2009*

**10th grade algebra**

for 2x+y=9 you do -2 -2 (subtract two from both sides) then you would get: y=9-2x (remember that when you move something to the other side you do the opposite equation)(in this case the opposite of positive is negative, so the 2x becomes negative)
*November 12, 2009*

**science**

was the bacteria that caused the bubonic plague a unicell or a multicell
*September 22, 2009*

**college**

how can i solve this problem? The number of tickets sold each day for a upcoming peformance of Handel's Messiah is given by N(x)=0.4x^2+8x+11, where x us the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will ...
*September 20, 2009*

**science**

Can elephants swim?
*May 3, 2009*

**Chem.**

An aspirin tablet weighing 0.400 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolved the tablet in hot NaOH and the cooled solution was diluted with DI water to the mark in a 250 mL volumetric flask. Exactly 3.00 mL of the solution was ...
*April 18, 2009*

**psycology**

we see indications that a child's role in perceptual development is passive when we observe
*April 8, 2009*

**math**

Write a proportion that is equivalent to the statement: If 3 gallons of gasoline cost $5.37, then 8 gallons will cost $14.32. On this one I have know idea how to perform this equation looked for examples no luck can someone help please
*December 4, 2008*

**Math 115**

List the factors of the number 27. 1,3,9 this is correct right?
*December 4, 2008*

**math**

A rectangle picture window is 4 ft. by 7 ft. Polly wants to put a trim molding around the window. How many feet of molding should she buy? Do I just add both sides to get my answer?
*December 4, 2008*

**Math 115**

You missed 12 questions on a 60-question test. What fraction names the part you got correct? (Reduce) On this would I divide 12 into 60 so I could make the fraction this one I just need a little help.
*December 4, 2008*

**Math**

Find the five-number summary of the following set of numbers. 337, 248, 157, 388, 248, 451, 271, 225, 310 First sort... 157,225,248,271,310,337,388,451. the minimum =157 the maximum = 628 the median=(271+310)/2=290.5 Upper quartile is (337 + 388)/2. = 337.5 Iam still confused ...
*December 1, 2008*

**Math**

Find the five-number summary of the following set of numbers. 337, 248, 157, 388, 248, 451, 271, 225, 310 First sort... 157,225,248,271,310,337,388,451. the minimum = 157 the minimum = =271 the median = (271+310)/2= 290.5 the upper quartile= can you please tell me if this ...
*December 1, 2008*

**United States History**

This was the first article I saw, this only addresses the whig party, not the northern whigs more specifically.
*November 30, 2008*

**United States History**

What were the NORTHERN WHIGS views regarding the following: -slavery -women's suffrage -prohibition of alcohol -guarantee of free public education -aid/help for handicapped -right to education for women and African Americans -practice of religion -Native American citizenship
*November 30, 2008*

**United States History**

What were the views of the NORTHERN RADICALS concerning the following topics: -slavery -women's suffrage -prohibition (temperance) -free public education, help for handicapped -right to education for women & african americans -practice of religion -Native american ...
*November 30, 2008*

**math**

Add and reduce to lowet terms m/x^2-9 + 1/3x-9
*November 23, 2008*

**Math**

Expressed to the correct number of significant figures, the sum of two masses is 445.2 grams. WHich two masses produce this answer? 1) 210.10 g+235.100g 2)210.100 g + 235.10 g 3) 210.1 g + 235.1 g 4) 210.10 g+ 235.10 g I think the answer is 2 but I don't know the reason why.
*November 6, 2008*

**math**

Business and finance. Julio works as a quality control expert in a beverage factory. The assembly line that he monitors produces about 20,000 bottles in a 24-hour period. Julio samples about 120 bottles an hour and rejects the line he finds more than 1/50 of the sample to be ...
*October 23, 2008*

**Spanish**

I have to study for a spanish quiz on these legends in this book called: Leyendas Latinoamericanas By Genevieve Barlow I have to know what happened in all of the stories in it by tomorrow and I want a summary on them but I don't know where to look. I don't have the ...
*October 7, 2008*

**Psychology**

Which parts of the brain begin to change first during development? What function would be affected due to these changes? What region of the brain changes last?
*September 28, 2008*

**Geography**

What is the detailed representation of a specific area on a map called?
*September 27, 2008*

**biology**

where can i find practice ap bio questions?
*September 18, 2008*

**us history**

Match each nation on the left with the correct description of the problem it presented for U.S. foreign relations following the Revolutionary War. a. Britain 1. threatened american b. france commerece in c. spain mediterranean d. barbary coast 2. demanded repayment of wartime ...
*September 14, 2008*

**us history**

Which statement was NOT used by the British to justify taxing the colonies after 1763? A. The British debt had increased as a result of the French and Indian War B. There were heavy administration expenses associated with maintaining the empire. c. These colonies should ...
*September 14, 2008*

**Statistics (2 mc probs)**

I have the following two multiple choice questions that are really throwing me for a loop: 1. Based on 500 people a researcher calculates the 95% confidence interval for the population proportion p: 0.123<p<0.181. a. There is a 95% chance that the true value of p lies ...
*August 4, 2008*

**Thank you**

Perfect advice. I appreciate the help!
*August 4, 2008*

**statistics**

SAT scores are normally distributed. The SAT in English has a mean score of 500 and a standard deviation of 100. a. Find the probability that a randomly selected student's score on the English part of the SAT is between 400 and 675. b. What is the minimum SAT score that a ...
*August 4, 2008*

**vocab**

what does the poetry term 'vulgate' mean, I can't find any definition that correlates to poetry
*July 29, 2008*

**english**

Anne Bradstreet's "The Author to Her Book" I realize she is writing about her poems and not a child but where is the irony in that?
*July 23, 2008*

**English**

Anne Bradstreet's "The Author to Her Book" I have to explain the irony in the poem. I thought irony would be like a firehouse burning to the ground. I don't see any irony in the poem what am I missing?
*July 23, 2008*

**math**

a sprayer puts out 20 gallons of spray per acre the area is 2640 feet long by 1755 feet wide how many gallons would be sprayed on this area?
*July 19, 2008*

**English**

1. In the following sentence, what part of speech is the word Tearfully? Tearfully, I hung up the phone. A. Adjective C. Preposition B. Adverb D. Interjection 2. In the following sentence, how is the underlined phrase used? Both Joe and I wanted the last piece of pizza. A. ...
*June 14, 2008*

**medical law & ethics**

I believe that the answer is A, it is a breach of confidentiality is you are talking about a patient in front of other patients, I work in the health field.. Hope this helps
*June 14, 2008*

**medical law & ethics**

I believe the answer would be illegal. We have no right to expose other peoples informations especially health information. It is punishable and could cause a law suit
*June 14, 2008*

**history**

Why is Athen's still admired as an early model of democracy?
*May 21, 2008*

**English**

Martin Amis's characterizations for Muhammad Atta in "The Last Days of Muhammad Atta" I read it but i dont see ANYTHING based on how he is characterized :( i can't post the website but if you type 'Have they been with you at all times?' in google than...
*February 24, 2008*

**algebra I**

they mean that n= n number of times in the equations (1/2)^n but the product is not corresct if u replce an exponent of 2 for the n... the answer is said to be 2^-n
*February 7, 2008*

**algebra I**

Oh okay. Then for the second problem, would it be (1/2)^2?
*February 7, 2008*

**algebra I**

If you toss a coin, the probability of gettig heads is 1/2. If you toss a coin 2 times. the probability of getting heds each time is 1/2*1/2 or (1/2)^2. -Write an expression to represent the probability of tossing a coin 'n' times and getting 'n' heads. -...
*February 7, 2008*

**Conservation Charge- Physics**

Please help me with this question. What particle has exactly one quantums unit of charge?
*November 5, 2007*

**reading**

The question asks for three reasons, so just saying "cameras are too disruptive" -- especially without explaining why they're disruptive -- would be inadequate.
I can think of three pro reasons:
1. Parents can monitor what's going...
*October 11, 2007*

**anthropology**

What are the advantages of bipedalism with respect to thermal stress?
*July 17, 2007*

**Science**

Under conditions of high temperature, two protons could combine to form a deuterium necleus in the following reactions: p + p ----> 2H + e+ + ve + energy Write the equation for this reaction in terms of the nucleons involved by replacing the deuteriu nucleus with the ...
*April 26, 2007*

**BIOLOGY**

IS A PLANT CELL AN EXAMPLE OF A UNICELLULAR ORGANISM? iS AN ANT AN EXAMPLE OF MULTICELLULAR ORGANISM? What are Plants Plants are multicellular photosynthetic organisms that are believed to have evolved from green algae. Both groups have chlorophylls a and b and betacarotene as...
*February 20, 2007*

**history**

what is the three fifth bible study
*February 17, 2007*