Tuesday
July 28, 2015

Posts by Alice


Total # Posts: 603

Science PHYSICS
but kinetic is used to get to the top of the steps?
April 27, 2010

Science PHYSICS
I am trying to gain a understanding of the transfers and conversions of energy whilst the subject (being a diver) goes through its motions. Maybe i should be clearer .... SO as the diver makes his way to the top of the steps chemical energy is transferred from the body to the...
April 27, 2010

Science PHYSICS
Hi there, would someone be able to tell me if this is right or almost right or really not right?! The scenario being explaining the transfers and conversions of energy of a diver. from walking up the steps to standing at the top of platform to jumping into pool and to start ...
April 27, 2010

science
how do you find the power when they give you random weird information
April 23, 2010

trig
hey. show 2sin(pi/14) is a solution to x^3-x^2-2x+1=0 and hint: let x=2sinu and sin(7u)=1 i can't seem to solve when i sub in the x value. how can i relate this to the seventh root of inifinity. i multiplu by sin^4 but they it just doesnt work.
April 23, 2010

Chemistry
What would be the product of the reaction of 4-methyl pyridine with Ac2O/AcOH and PhCHO? I'm really stuck on this. I'm guessing the pyridine will attack the anhydride and form an acyl pyridinium ion but I'm not sure where to go from there. If that reacts with AcOH ...
April 21, 2010

physics
If you throw a ball straight out horizontal to the ground and your friend drops a ball from the same height, will the balls hit the ground at the same time?
April 21, 2010

science
Between 1960 through 1980 which year produced the greatest percentage of fish?
April 19, 2010

Math
show me the steps to solving this problem? 3k/5+44=12k/25+8
April 14, 2010

social studies
athensm had the first democracy or monument ?
April 13, 2010

Chemistry
What would be the product of a reaction between methanal and pyrrolidine in acid? I know that normally a reaction between a carbonyl and a secondary amine would form an enamine. Here I am confused because there are no hydrogens that can be removed to form the enamine as this ...
April 7, 2010

Organic chem
Why can't anybody help me?
April 5, 2010

Organic chem
Suggest a reason why the trans form of benzalacetophenone if formed in prefernce of the cis form. What does the cis form of this compound look like?
April 5, 2010

quantum mechanics
Write the Hamiltonian operator for 2 electrons in a 1D box of length a. I know that the Hamitonian is a sum of the kinetic and potential energies. I was thinking that for 2 electrons in a 1D box it would be: -2((hbar^2)/2m_e)(d^2/dx^2)) + Coulomb interaction for 2 electrons I ...
April 5, 2010

astronomy Confuse
Time dilation is the theory of time relative to motion. It is the principle that time elapsed is relative to motion, such that time passes more slowly for a system in motion than for one at rest relative to an outside observer. Further, as predicted by Einstein's special ...
March 28, 2010

Geology
Im after info that will help me answer what the relevance of the age of the oceanic crusts and the continental crusts within the south american plate Are there presence of hotspots on the south american plate? what is the process that is responsible for the change in area of ...
March 25, 2010

Science PHYSICS
THANK YOU what is the magnitude of acceleration that the force 5.0 x 10³ N causes when applied to a vehicle with a mass of 1.1x10³kg??? How do i present the answer for this ?
March 24, 2010

Science PHYSICS
SO desperate with help with this. What is the magnitude of the acceleration that this force will cause when applied to a car with a mass of 1.1x10³Kg Then calculate the final speed of the car (above) assuming that it was standing still initially and that the force of 5.0 ...
March 24, 2010

7th grade science
what is the position of the diaphram when you make it inhale and exhale?
March 15, 2010

Chemistry
OK thank you so much! I was wondering whether or not there would be 2 OH ions to account for. Thanks again!
March 14, 2010

Chemistry
If 4.56 grams of NaOH and 56.3 grams of Ca(OH)2 are added to enough water to make 1.50 L of solution, what will the pH be?
March 14, 2010

Chemistry
I have some enthalpies of formation for a reactant and transition state but calculated using different computational methods. I want to find the ratio of the forward rate constants determined using both methods but I'm not really sure how. I thought I could maybe use ...
March 13, 2010

Chemistry
Iron metal is dissolved in dilute aqueous HCl. The resulting solution is warmed with dilute nitric acid and then treated with aqueous potassium iodide. Write equations for the reactions. Ok so for the first step I got: Fe + 2HCl --> FeCl2 + H2 I'm guessing that when ...
March 2, 2010

Chemistry
I'm trying to write an equation for the reaction of zinc nitrate with aqueous ammonia. I know that zinc hyroxide is produced first but I don't really know how to write an equation for this. This is what I came up with: Zn(NO3)2 + 2OH- --> Zn(OH)2 + 2NO3- I'm not...
March 1, 2010

Paragraph
elisabeth ur sentence is way better compared to mine, thanks B.F
February 25, 2010

Paragraph
Satisfy me by improving this and I'll be thankful to you 4ever. In the following paragraphs I will be talking about her life, where and who she performed with, which songs she sang, and what awards she won, and her charity work. It seems like Im missin something around in ...
February 25, 2010

Maths (limits)
for the first question, use ur GC (graphic calculator), u can see frm the table function that answer is 0.2 for the 2nd one, it is to say 2+lim(100/x)=2
February 17, 2010

Maths
1. list all the possible ages of the children (you don't need to, cos i've done it for you) - eg. (1, 1, 11) (1, 2, 10) etc 2. if you list all this, you will find that there are 2 answers that give a solution of 36. these are: (6, 6, 1) and (9, 2, 2) 3. the master says...
February 3, 2010

Finance
Bunyan Lumber, LLC, harvests timber and delivers logs to timber mills for sale. The company was founded 70 years ago by Pete Bunyan. The current CEO is Paula Bunyan, the granddaughter of the founder. The company is currently evaluating a 5,000 acre forest it owns in Oregon. ...
January 30, 2010

6th grade math
Thank you Ms. Sue
January 26, 2010

6th grade math
how do you find the reciprocal of 0.68?
January 26, 2010

business
Suppose I am a cashier working at McDonald's. What are their levels of management and organizational structure, managerial levels and positions?
January 21, 2010

business
What basic characteristics are needed for a shoe salesman to achieve a good person-job fit?
January 17, 2010

business
What basic characteristics are needed for a shoe salesman to achieve a good person-job fit?
January 17, 2010

English
I just took this test and answered 5 and got it wrong.
January 13, 2010

Expression
I have to introduce myself (character, life) in an original way and I haven't got a clue how to do this. I'm not a very creative person and time is ticking. It's stressing me out. Anyone got ideas ?
January 13, 2010

6th Grade Math
OK THANKS EVERYONE WHO HELPED MY SISTER SAYS THANKS TOO!!!!!<3
January 12, 2010

6th Grade Math
Ok i need to know what 2 3/6 + 3 1/2 is 4-2 3/5 and 2/3*4/5 is because i forget how to do adding subtracting and mutiplying fractions
January 12, 2010

7th grade math
suzanne earns s dollars per year.Francine earns f dollars per year.How much more money does Francine earn than suzanne?
December 16, 2009

7th grade math
add t and m. how much greater than w is the sum?
December 16, 2009

7th grade math
when p is subtracted from a certain number, the difference is 50. Find the number.
December 16, 2009

7th grade math
when s is added to another number, the sum is 26,493.what is the number?
December 16, 2009

chemistry
given 40.0g of iron, how many grams of iron II oxide are produced.
December 15, 2009

7th grade science
If an organism expresses a recessive phenotype can you tell the genotype? Explain, include one example in your response.
December 15, 2009

7th grade science
What is an example of genetic engineering helping people ?
December 15, 2009

info
What does Kamloops mean in native dialect?
December 13, 2009

science
compare inheritance by multiple alleles and polygenic inheritance
December 10, 2009

Math
Laurie expects to make $100,000 in 2007. Her social security tax rate is 6.20% up to the wage base, Medicare is 1.45%. How much FICA is Laurie expected to pay for the year?
December 8, 2009

science
compare and contrast mitosis and cell divison
November 21, 2009

science
how is Dna copied?
November 21, 2009

7th grade science
name two scientest who studied inherited genetics and what they used for research and why
November 17, 2009

7th grade science
name 2 scientest who inherited traits
November 17, 2009

Chemistry (physical)
At room temperature (25 degrees C) butane is a mixture of 72% anti and 28% gauche conformations. Calculate the difference in energy between the gauche and anti confromations. This is how I calculated it but I am not sure I am right: Boltzmann equation: N2/N1 = exp(-(E2-E1)/RT...
November 8, 2009

Healthy Decision Making
1.Wear a seatbelt in car 2.Don't play with fire 3.Wear a helmet when biking,etc. 4.Always have your shoelaces tied
November 1, 2009

science
Mitosis: Number of chromosomes in cells production Meiosis: Number of chromosomes in cells production.
October 27, 2009

Quotes
Awesome:-) these quotes are really good. I'd love to see more from others. please keep posting, thanks.
October 17, 2009

Quotes
I would like to know everyone's favorite quotes. My favorite quote is: This is a miracle that happens everytime to those who really love; the more they give,the more they possess. Out of all the quotes, I have to pick top 6, and then everyone in my class will vote for the ...
October 17, 2009

philosophy
what are your answers?
October 17, 2009

english
not illusory
October 17, 2009

7th grade
can you post those vocabulary words on here, maybe I can help.
October 17, 2009

Riddles
I would just like to know that say I need help on a riddle urgently, would i post it on Net Riddle to recieve help?
October 17, 2009

Twilight
I have to do this writing assignment on anyone I want to. I really like Bella from the movie twilight so i am doing this on her. I have to describe her and all. I already know how she is from my point of view, but I would like to know how she is from yours. so please describe ...
October 12, 2009

Twilight
thanks, more ratings will be appreciated from others
October 12, 2009

Twilight
I would like to know everyone's opinion on Twilight. rate from 0 to 5. We are supposed to pick one topic, it can be on anything, so I chose twilight. I just need the average rating,thanks.
October 12, 2009

math
Kevin makes $5.25 per hour he worked 18.25 hours. What is the best estimate of the amount of money he made? Do you just divide the 2 numbers?
October 12, 2009

Math
Faryi averaged 50 mph on trip to visit an amusement park 80 miles away and started with a full tank of gas. Her car usually averaged 25 mph each time she purchased. The gas price $2.65 par gallon when she got home. Calculate Faryi’s time ( in minutes) and the cost to fill...
October 11, 2009

math
In the year 1910, many people immigrated to the United States-460,935 from northern and Western Europe, 465,356 from eastern and southern Europe, 89,534 from the Americas, 23,533 from Asia, and 1,072 from Africa. Make a bar graph to show this data. What would be an easy ...
September 7, 2009

math
how?
September 3, 2009

math
can someone please explain this problem? (-> is an arrow) assume that limit x-> 4 f(x)=0 and limit x-> 4 g(x)=3 1. limit x-> 4 (g(x)+3
September 3, 2009

math
how do i find the limit of this? (This symbol:-> is an arrow) lim of x-> 0 sin^2x/x can someone please explain?
September 2, 2009

science
How can island biogeography be compared to the design of nature reserves? I understandall the things you can do to the nature reserve in terms of bettering it but how is an island similar to a wildlife refugee or reserve (why can you compare them)? can someone please explain?
September 2, 2009

psychology
do you agree that humans are creatures as well as creators of their personal and social world
September 2, 2009

Algebra
If f(x)=x^2-2 and g(x)=1/(3x) (x does not equal 0), find g(f(-1)
July 27, 2009

english
is this a metaphor? Our shadow painted the sand
June 14, 2009

Chemistry
Which would react faster with MeI in aqueous solution: OH- or Et3N? I know that the reaction in aqueous solution would be an Sn1 reaction and so steric hindrance wouldn't have such a great effect. I am not sure which is a better nucleophile out of OH- and Et3N. OH- is ...
May 26, 2009

Chemistry
.25
May 25, 2009

Math
A set of homogeneous simultaneous equations is given by x + ky = 0 kx + 3y = 0 Calculate the two values of k that lead to non-trivial solutions to these equations and express y in terms of x for the two values. I thought that for the solutions to be no trivial the determinant ...
May 17, 2009

Chemistry
I am attempting to answer a question which asks to explain the sequence of pKaH values for a series of substituted guanidines (NH2)2CNR where R varies. The order is R = H , Ph , CH3CO , MeO , CN , NO2 pKaH = 14.5 , 10.8 , 8.3 , 7.5 , -0.4 , -0.9 I'm not quite sure how to ...
May 4, 2009

Maths
How can it be possible for a set of inhomogeneous simultaneous equations to have no unique solution?
April 28, 2009

Chemistry
Why do amides require much harsher conditions for hydrolysis than esters? I'm guessing amides are more stable for some reason, but I'm not completely sure. Is it conjugation?
April 23, 2009

Chemistry
Why does CdCO3 have a significantly lower decomposition temperature than CaCO3, despite the similarity in the ionic radii of Ca2+ and Cd2+? I think they both decompose to give the metal oxide and carbon dioxide. Could the polarising ability of Ca compared with Cd have ...
April 23, 2009

math
c 16
April 22, 2009

math
louis drew all of the possible diagonals from one vertex of a regular hexagon. Which of these statements is true? A) Each diagonal from this vertex is one of two different lengths B) None of the diagonals forms a line of symmetry of the hexagon. C) The diagonals form four ...
April 22, 2009

History- Opinion
Yes! Totally. It's sounds very good. Who said that? I've it before.
April 22, 2009

math
Are diagonals longer shorter or the same size as a regular pentagon's sides?
April 21, 2009

circuits
a parallel RLC bandpass circuit with C=10nF and Q=10 has a center frequency of 500 krad/s. Find R,L and the two cutoff frequencies. Can you design this circuit using a cascade connection of two first-order filters seperated by a follower?
April 20, 2009

circuits
For the transfer function Tv(s)=[10(s+5)(s+20)]/[(s+1)(s+100)] is this a low-pass, high-pass, bandpass or bandstop function? estimate the corner frequency(ies) estimate the passband gain what is the output if v1(t)=10cos(1000t+45deg) V??
April 20, 2009

Chemistry
Which is the stronger base, NH3 or H2N-CH2COOH?
April 18, 2009

Chemistry
Why is the carbonyl group in tert-butoxycarbonyl group (tBOC) less susceptible to attack from nucleophiles than the carbonyl group in esters such as ethyl acetate? Is this something to do with conjugation?
April 13, 2009

maths
what is th area of 10,10,18,4,4,8,8,2 ?
April 8, 2009

Chemistry
Is this the correct equation for the formation of [Co(NH3)5(ONO)]^2+ from [Co(NH3)5Cl]^2+ ... [Co(NH3)5Cl]^2+ + NO2 --> [Co(NH3)5(ONO)]^2+ + Cl- I'm a bit unsure because the charges don't balance
April 8, 2009

science
if two bumper cars collide and they both stop, how do you know a force has acted on them?
April 4, 2009

Literature:)
37.4% of marriages end up in divorce. these are mostly young people, about 20's.
April 4, 2009

Nutrition of the young child
B, i think
April 4, 2009

Economics
705 3987.5
April 3, 2009

Literature (If considered that)
Ms. Sue is right. 37.4% of marriages end up in divorce.
April 2, 2009

literacy
The first word and all the other words after it besides the, on, and, and other commonly used words. For example: "The City Charlotte is on the Map!"
March 31, 2009

social studies
In the year 1900 how many colleges were there?
March 31, 2009

math
a box holds 23 puzzles. How many boxes are needed to hold 238 puzzles?
March 31, 2009

math
You are having a pool party and invite 2 of your best friends. These two friends each invite two other people. Each of these 2 people invite 2 people that haven't been invited. How many people will be invited if this process continues for four rounds?
March 31, 2009

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