Monday
October 20, 2014

Posts by tom


Total # Posts: 1,099

English
1. As he was sick, he could not go out. 2. Being sick, he cound not go out. 3. Sick, he could not go out. (Are they all the same? Is #3 grammatical?) 4. Reading a book, he chew gum. 5. Shaking hands, he said hello. 6. Smiling brightly, he greeted me. 7. Walking in the park, he...
October 25, 2009

English
1. Walking in the park, I saw Mina. 2. When I walked in the park, I saw Mina. 3. When I was walking in the park, I saw Mina. (Does #1 mean #2 or #3? Are they all the same?) 3-1. Being walking in the park, I saw Mina.(Is this one correct?) 4. With night coming on, we started ...
October 25, 2009

calculus
A vector field with a vector potential has zero flux through every closed surface in its domain. it is observed that although the inverse-square radial vector field F = (e^r)/(p^2) satisfies div(F) = 0, F cannot have a vector potential on its domain {(x,y,z)does not equal (0,0...
October 25, 2009

Calculus
thank you very much
October 25, 2009

Calculus
would the max be sqrt(2) at x = pi/4, and the min be -sqrt(2) at x = 5pi/4?
October 25, 2009

algebra
what is the fourth root of 16
October 21, 2009

Math/chemistry
how do I solve this equation? 106 g * 4.184 * (X-23 degrees celsius)
October 20, 2009

P.E.
encroachment Wide receiver interception Center punt offense
October 20, 2009

Chemistry
I think i got it. Is the answer 0.348837209?
October 20, 2009

Chemistry
Thanks bob, I've got the formula down, I'm now stuck on the equation. 9J=(8.60g) (X) (3.00 degrees celsius) How do I solve this equation?
October 20, 2009

Chemistry
It takes 9.00 to raise the temperature of an 8.60 piece of unknown metal from 22 to 25.0. What is the specific heat for the metal?
October 20, 2009

chemistry
5.0 g of NaNO3 is dissolved in 50.0 g of water. The initial temperature of the water was 21 degrees Celsius and the final temperature of the water is 15.7 degrees Celsius. 1)Calculate the heat of solution, DeltaHsolution. 2) calculate the heat of solution, DeltaHsolution, per ...
October 19, 2009

Chemistry
5.0 g of NaNO3 is dissolved in 50.0 g of water. The initial temperature of the water was 21 degrees Celsius and the final temperature of the water is 15.7 degrees Celsius. 1)Calculate the heat of solution, DeltaHsolution. 2) calculate the heat of solution, DeltaHsolution, per ...
October 19, 2009

Chemistry
5.0 g of NaNO3 is dissolved in 50.0 g of water. The initial temperature of the water was 21 degrees Celsius and the final temperature of the water is 15.7 degrees Celsius. 1)Calculate the heat of solution, DeltaHsolution. 2) calculate the heat of solution, DeltaHsolution, per ...
October 19, 2009

o-chem
which compounds below that have a vibration that is infrared inactive. and indicate the specfic vibration that is infrared inactive. 1) acetone 2) 1-butyne 3) 2-butyne 4) water 5) chlorine
October 18, 2009

chemistry
Two identical ballons are filled, one w/ argon the other w/ oxygen gas at the same temp. If the oxygen ballon leaks at the rate of 64 mL per hour, how many hours will it take the argon ballon to lose 195mL of argon gas? so far this what i have now i am stuck Its 64/r2 = sqrt(...
October 15, 2009

chem
Two identical ballons are filled, one w/ argon the other w/ oxygen gas at the same temp. If the oxygen ballon leaks at the rate of 64 mL per hour, how many hours will it take the argon ballon to lose 195mL of argon gas? formula: rate 1/rate 2=square root of m1/m2
October 15, 2009

physics
If the resultant velocity is 29.7 m/s and is directed at an angle of 22 degrees, what are the horizontal and vertical components?
October 14, 2009

Math
find W solve c=w squared X cubed/24t squared
October 14, 2009

physics
Is it possible to calculate the torque acting on a rigid body without specifying the origin?
October 9, 2009

English
1. The puma is chasing the deer. 2. Do you like rice cake? This rice cake has red beans. Some believe that red beans chase away ghosts and bring good luck. It's just superstition, right? 3. Americans eat turkey on Thanksgiving Day. However,Turkey is a country. You can not ...
October 4, 2009

English
Tom's sister has a son. What does Tom call him? 1. He calls him nephew. 2. He calls him "nephew." 3. He calls him "nephew". (Which answer is right?)
October 4, 2009

English
Is Eminem a male name or a female name? How do you pornounce the name?
October 4, 2009

computer business system
1. A list of context-sensitive commands usually activated by right-clicking a screen item. What's this call? a)option group b)drop-down list c)short-cut menu d)dialog box 2.A small preview image of a graphic is a) picture b) thumbnail c) icon d) pixel 3.Is the time taken ...
October 2, 2009

English
Thank you. (Does Sentence 1 sometimes mean Sentence 2? A little confusing....) 1. Giraffes are much taller than lions and elephants. 2. Giraffes are much taller than lions or elephants.
September 27, 2009

English
1. Giraffes are much taller than lions and elephants. (Does this sentence mean that giraffes are much taller than the height of lions plus the height of elephants?) 2. Giraffes are much taller than lions or elephants. (I think 'or' is much better. What is the ...
September 27, 2009

English
1. He is so kind to help me. (Is this correct? What other expressions can we use?) 2. I don't spend a lot of money in buying things. 2-2. I don't spend a lot of money on buying things. (Which is correct? Which preposition do I have to use before 'buying'?) 3. I...
September 27, 2009

mathematics
20*11= 20+100=
September 27, 2009

ICT
What is the weather going to bein the following states Lagos Oyo Benie Borno Niger
September 27, 2009

Math
solve using the multiplication principle. don't forget to perform a check. 12x=-96 the solution is x=
September 27, 2009

Health
Are there any homepages where we can see many kinds of rice cake on the Internet?
September 22, 2009

Social studies
What is winter solstice?
September 22, 2009

English
Q: Can I get you anything? (clerk) 1. I'm not ready yet. 2. 3. (Is the answer 1 correct? What other answers can we say?)
September 20, 2009

English
1. Australia is much larger than England and Korea. 2. Australia is much larger than England or Korea. 3. Australia is much larger than both England and Korea. (What is the meaning of #1? Does #1 mean #2 or #3?)
September 18, 2009

English
Would you let me know good websites wher I can watch educational videos for free? Thank you.
September 18, 2009

English
* You know what? (When do you use this expression? What is the difference between 'What do you know?' and 'You know what?')
September 17, 2009

English
What kind of gift do you want from Australia? (What is the meaning of 'from Australia? Does he mean the gift made in Australia? Or a gift from a person, the writer, in Australia?)
September 17, 2009

English
1. What is the opposite of "upside down"? 2. Don't tell me, because I already bought many postcards for you. 2-1. Don't tell me, for I already bought many postcards for you. 2-2. Don't tell me because I already bought many postcards for you. (What is the ...
September 17, 2009

English
I saw many animals such as koalas, a dingo, kiwis, cuscuses, kangaroos and emus in the zoo. I saw an emu stand in front of me. I saw a dingo stand by me. I saw kiwis gather around the fence. I saw a girl carry a koala. A mother koala is on a tree with her baby on her back. I ...
September 17, 2009

Social studies
Some more animals?
September 17, 2009

Social studies
Can you name some of the animals well-known in Australia?
September 17, 2009

English
How can we share Korean traditions? 1. We can make traditional tteok, rice cake, with our classmates. 2. We can make traditional kites in our classroom. 3. We can make traditional Korean dress at home. 4. We can play traditional Korean games such as baduk, janggi, and yunnori...
September 16, 2009

English
1. He dreamed a strange dream. 2. He had a strange dream. 3. He got a strange dream. 4. He dreamed strangely. 5. He dreamt a strange dream. (Are they all the same and acceptable?) 6. There are three rice cakes in the paper bag. 7. There are three pieces of rice cake in the ...
September 16, 2009

English
What did the family do? 1. The family gave special rice cake to their new neighbors. 2. They gave special rice cake to their new neighbors. 3. He or she gave special rice cake to their new neighbors. 4. He gave special rice cake to their new neighbors. (Which answers are ...
September 16, 2009

English
1. Let's go diving under the sea. 2. Let's go diving in the sea. 3. Let's go diving into the sea. (Which one is correct? Are all correct?)
September 16, 2009

English
1. They believe red beans can chase away ghosts and bring good luck. (What other expressions do you have instead of 'chase away'? Would you let me know similar expressions?) 2. She will see them by visiting Seoul Pooh's homepage where Pooh will put his pictures ...
September 16, 2009

English
Q: What did the Korean family give their neighbors? 1. They gave their new neighbors special rice cake to say hello. 2. He or she gave his or her new neighbors special rice cake to say hello. 3. He gave his new neighbors special rice cake to say hello. (Which answer to the ...
September 16, 2009

English
1. Using animals or thins on the page, make a comparative sentence as in the example. e.g. An airplane is much faster than a lion. (Is this one grammatical? Would you let me know a website related to comparative, superative, etc.?)
September 16, 2009

English
* in 2012 How do you read 2012 here?
September 15, 2009

English
* Sat, June 3, 2012 How do you read 2012 in the expression above?
September 15, 2009

English
1. Ask your friends for help, and they will help you. 2. Ask for your friends' help, and they will help you. 3. If you ask for your friends, they will help you. (Are they all grammatical and the same?)
September 15, 2009

math
thanks Ms. Sue, Ashley???
September 2, 2009

math
For the first day of school, our math teacher wanted us to write ten things to say instead of saying "shut up", I've only got a couple so far, any ideas?
September 2, 2009

chem
is it saturated
May 28, 2009

chem
it looks like it is above
May 28, 2009

chem
If 20 g KCL is dissolved in 100g of water at 20 degrees C, is the solution unsaturated, saturated, or supersaturated?
May 28, 2009

chemistry help asap
A solution of salt in water conducts electricity, but a solution of sugar does not. Explain why?
May 20, 2009

chemistry help
What ratio does molarity express?
May 18, 2009

Chemistry
Hello, i am still needing help
May 13, 2009

Chemistry
Those aren't mole, those are concentraiton
May 13, 2009

Chemistry
If 25.0mL of sodium nitrate solution (0.100mol/L) is added to 10.0mL of sodium carbonate solution (0.150 mol/L), what is the concentration of sodium ions in the resulting mixture? Assume the volumes are additive.
May 13, 2009

pre-calculus
standard form is y=mx+b where m is slope, x is x value in (x,y) and b is the y intercept. Find slope by using y2-y1/x2-x1
May 13, 2009

chemistry
Why don’t dipole-dipole forces have much affect on a gas?
May 11, 2009

chemistry
entropy increase as temperature increases why
May 11, 2009

chemistry help
What mass of Kbr is present in 25 mL of a 0.85 M solution of potassium chloride?
May 10, 2009

pre calc
what is the domain and range of f(x) x^3?
May 7, 2009

chemistry
Calculating Parts per million Helium gas, 3.0 x 10^-4 is dissolved in 200.0 g of water. Express this concentrartion in parts per million.
May 6, 2009

3rd grader needs help with grammar
Is it..... my Classmates and me or my classmates and I
May 6, 2009

model un
what do ecuador plan to do to get rid of infectious disease.
April 20, 2009

model un help
can it be found in a more easy way
April 20, 2009

model un help
what has beem done in Ecuador on infectious disease and why
April 20, 2009

model un need help asap
unusually people that have the diseases
April 20, 2009

model un need help asap
well can you give me some key ideas to point out
April 20, 2009

model un need help asap
thats my work
April 20, 2009

model un need help asap
does this first part work The republic of Ecuador, which has a population of 10 million, is one of the smallest of the Andean countries in South America. It covers only an area of 110,000 square miles. It has an extraordinary diversity of infectious diseases. Many of the ...
April 20, 2009

model un need help asap
How should I start a great position paper on Ecuador and its infectioud Disease?
April 20, 2009

chemistry
Contrast ionic and molecular substance in terms of the type of attractive forces that govern their behavior.
April 19, 2009

chemistry need help
ok i understand but i have another question
April 19, 2009

chemistry need help
The London dispersion force is the weakest intermolecular force. The London dispersion force is a temporary attractive force that results when the electrons in two adjacent atoms occupy positions that make the atoms form temporary dipoles. This force is sometimes called an ...
April 19, 2009

chemistry need help
A fellow student say , " All substance experience London disperison forces of attraction between particle." Is this etatement true? Explain your answer
April 19, 2009

CHemistry
Research the role of chemistry within a specific industry. Identify chemical processes upon which the industry relies. Explore environmental impacts of the industry that are related either to the chemicals it uses or produces. Procedure Choose one of the industries listed ...
March 30, 2009

Business Statistics
.22
March 29, 2009

grammar
Hello, I need a grammatical correction in the following excerpt from my essay, "We can see the benefits of having a husband for a woman in the following excerpt..." My teacher circled the phrase "having a husband for a woman" (which means that there is ...
March 22, 2009

Math
A coustomer wants to make a teepee in his back yead for his kids. He plans on using PVC plumbing pipe for the supports on the teepee, and he wants the teepee to be 12 feet across and 8 feet tall. Howlong should the PVC plumbing pipe be?
March 8, 2009

Math pizzazz worksheet answers
What's the answer to "what did the mama cow say to the baby cow"?
March 8, 2009

english
i thank you for the help, but other question how do i being it i'm not that that good in this.
March 3, 2009

english
Create a 3-5 page Request for Proposal (RFP) for bringing in outside trainers to train staff on the use of Microsoft Office® programs. # General overview of the RFP # The business requirements for the project, including the specific items (products and services) on which ...
March 3, 2009

math
thank you
February 28, 2009

is the answer
is the answer a+b that is what i got
February 28, 2009

math
a^2-b^2/a-b reduce to lowest terms
February 28, 2009

Algebra
(2y+1)/(y^2-y-6) ruling out value for y. which numbers can not be used in place of (y).
February 27, 2009

Math
Let f(x) = (lne^2x)/(x-1) for x>1. If g(x) is the inverse of f(x0, then g'(3) = ? A. 2 B. 1 C. o D. -1 or E. -2 if you can show/explain how to get that please, thanks
February 23, 2009

psychology
what is an example of the relationship between sensory adaption and negative adaption?
February 8, 2009

Chemistry 9
what were the firstsubstnces to be discovered
January 25, 2009

Sociology
I have already answered these questions but I am a little uneasy of the answers. Could someone please read them and provide feedback and if possible a little more detail for explainations? Q: What is the meaning of stratified? A: To classify or separate (people) into groups Q...
January 18, 2009

science
how do you balance a chemical equation
January 11, 2009

Ordinary people
I also don't get this, but wondering if this is right... What is Conrad perception of Karen and her state of mind? Is the answer for that this: Conrad talks to himself, saying "Okay Karen we'll see you around who needs you anyway who the !@#$%^& needs anybody?
January 8, 2009

Ordinary people
Chapter 7, Why does Karen say they should be careful about who they see? It is because Karen likes Conrad? OR that she's telling Conrad to control his life and live his life??
January 8, 2009

WHAT DOES THIS QUOTE MEAN??
WORK PAYS LATER. LAZY PAYS NOW.
January 5, 2009

math
Solve the following equation -5x + 1 > 11 Please include work
January 3, 2009

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