Questions Asked on
January 26, 2009

Physics  Waves
A harmonic wave is traveling along a rope. The oscillator that generates the wave completes 40.0 vibrations in 30.0 s. A given crest of the wave travels 425 cm along the rope in a time period of 10.0 s. What is the wavelength?
asked by Nami 
chemistry
Solid zinc and aqueous hydrogen sulfate reacts to produce hydrogen gas and aqueous zinc sulfate Is this the right answer Z(aq)+HS equals H(G) ZS? if not can u please correct me
asked by Lauren 
Poem: A Voice by Pat Mora
Could you please check my answers thanks 1.What happens when the mother goes to the state capitol to give her speech? Answer: When the mother goes to the state capitol to address her speech she wanted to hide her face. Also she faked hoarseness, and she
asked by Remy 
Chemistry
how do you write a chemical equation with this reaction? can u help me solve these 1.Liquid carbon disulfide reacts with oxygen gas, producing carbon dioxide gas and sulfur dioxdie gas. 2. Solid zinc and aqueous hydrogen sulfate reacts to produce hydrogen
asked by Lauren 
chemistry
explain why the pure solvent shows a level horizontal curve as solidification occurs, but the curve for the solution slopes downward slightly. The solvent is BHT and the added particles are an unknown compound. My reasoning is that it happens because the
asked by Unsure 
I just posted chinese!!
um, i don't think it appears really well on my monitor (is it just mine or...) if you can't see it, could you please give me your email add so that i can email it to you and you can check the mistakes? please help me...
asked by Jennifer 
ScienceChemistry
1)Fill in the blanks. In a liquid, particles are _____arranged. They move about in ____ directions and slide over one another. Can I say "irregularly" & "any" as the answers? I know "random directions" is better, but can we accept "any directions"? 2) When
asked by anne 
Math
Period 1 has 15 students in it and a test average of 86%. Period 2 has 21 students in it and an average of 88%. Period 3 has 12 students in it and an average of 95%. Use weighted means to find the overall average of the classes.
asked by John 
Geometry
A new pipeline is being constructed to reroute its oil flow around the exterior of a national wildlife preserve. New pipeline 60 miles , 32 miles, x=old pipeline. About how many extra miles will the oil flow once the new route is established? A. 24 B. 68
asked by Taylor 
microeconomics
consider total cost and total revenue given in the table bellow: quantity total cost total revenue 0 $8 0 1 $9 8 2 $10 16 3 $11 24 4 $13 32 5 $19 40 6 $27 48 7 $37 56 a. Calculate profit for each quantity. How much should the firm produce to maximize
asked by sara 
physics
solve for H: V=LWH
asked by Simon 
chemistry
An aspirin tablet weighing 0.475 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
asked by leah 
physics
A vibrator moves one end of a rope up and down to generate a wave. The tension in the rope is 58 N. The frequency is then doubled. To what value must the tension be adjusted, so the new wave has the same wavelength as the old one? would it be doubled?
asked by Sierra 
english
I have to write an essay about the poem "The word is too much with us" by william Wordsworth. I have to talk about content and how he uses poetic devices to make his argument. Anyways, I'll probably be posting parts of essay through out today, so can you
asked by Anonymous 
English
Hi i am writing a response paper for "Cathedral" by Raymond Carver. Im not sure but is this a proper thesis statement. In the short story Cathedral, by Raymond Carver, a man refers to Robert as "this blind man." Not only is he categorizing Robert, but he's
asked by Jake 
Physics
John's approval rating is an average based upon 4 categories. What is his overall weighted rating if the following is true? Category 1= 450 points weight factor 1 Category 2= 475 points weight factor 2 Category 3= 500 points weight factor 1 Category 4= 400
asked by Sam 
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 6.40 s later. What is the rocket's acceleration?
asked by Michael 
physics
During an experiment that Paul and Dawn performed the stretch of a spring was directly proportional to the force applied to the spring. When they put the data on a graph, they would expect to have what type of curve? Answers: Hyperbola, parabola, straight
asked by Lily 
Physics  Sound
A sound wave travels in air at a frequency of 500 Hz. If part of the wave travels from air into water, does its frequency change? Does its wavelength change? Note that the speed of sound in air is about 340 m/s, whereas the speed of sound in water is about
asked by Sam 
Dr Bob
On preparation of a solution of protein, you attempted to dissolve the substance in water, but a suspension resulted. Dropwise adition of NaOH solution, with stirring, eliminated the suspension. Addition of acid to the original suspension had no effect.
asked by Andrew 
algebra
Direct and Joint Variation 2. The volume V of a rectangular prism of a particular height varies jointly as the length l and the width w, and V = 224 ft when l = 8 ft and w = 4 ft. Find l when V = 210 ft and w = 5 ft.
asked by bob 
history
What is Anne franks legacy?
asked by Ariana 
Physics
An equilateral triangle has sides of 0.17 m. Charges of 9.0, +8.0, and +2.2 µC are located at the corners of the triangle. Find the magnitude of the net electrostatic force exerted on the 2.2µC charge.
asked by Z 
AP biology
question 5 asks how did the KOH affect the water movement in the respirometer. Does anyone know the answer cuz i drew a blank on that one.
asked by Jenner 
algebra
What are the similarities and differences between functions and linear equations? Are all linear equations functions? Is their a time when a linear equation is not a function? and why.
asked by tera 
Code of Conduct
I was charged with a violation of the code of conduct at my University and I am not guilty. I need to write a great letter of Appeal to reverse the charges and continue with my education. Can someone help me write a letter of appeal????
asked by Kay 
Algebra B (probability)
I just don't understand how to do this... A kidneyshaped swimming pool is located in a rectangular back yard. The sides of the pool consist of four connecting semicircles. A parachutist is hired to land in the back yard during a party. Assuming the
asked by Arika =] 
Chemistry
write the following chemical equation for this equation In water,iron (III) chlroide reacts with sodium hydroxide, producing solid iron (III) hydroxide and sodium chloride? can you help me figure this out I am confused
asked by Ashley 
To Bill  psychology
I've removed your 20question, multiple choice post. Your instructor assigned this exercise/test to find out what YOU know. If you have a problem with a couple of the questions, please post them along with your thoughts about possible answers. Then we'll
asked by Ms. Sue 
physics
manipulate the following equation to solve for t: s=1/2a t^2.
asked by Heather 
Math word gr 8
For the month of January, the average afternoon temperature in Calgard is 1/4 the average morning temperature. The average afternoon temperature is 4 C. What is the average morning temperature? a.) If m represents the average morning temperature, what
asked by Tyler 
Science
1) Instead of using the word "random",is it acceptable to say particles in a liquid move about in "different" directions? 2) Why does ice have a higher density than water vapour? Is it because ice has a greater mass in a fixed volume? 3) The statement
asked by anne 
biology
how much time do cells spend in each phase of the cell cycle?
asked by SMITHly 
chemistry
CaCl2 > Ca2+ + 2 Cl i'm trying to figure out the van't hoff factor. i know i=3. But where did the 2 come from before Cl.
asked by Anonymous 
math
write a word problem involving the number of pages in a book. then write the numerical expression that you would need to use to solve your problem.
asked by michelle 
Chemistryplease help
1) Metals that are above hydrogen in the reactivity series react with dilute hydrochloric acid to produce hydrogen gas. Lead is just above hydrogen in the reactivity series.I read a book that says no reaction occurs between lead & dilute acid. Why? Is it
asked by candy 
Math
There are seven red, five blue, and eight white chips in a bag. What is the probability of pull out a blue or white and then quickly putting it back in the bag and pulling out another blue or white, making a combination of one blue and one white.
asked by John 
Algebra
4a2 (less than or equal to) a + 1 (less than or equal to) 3a + 4 I'm assuming I should put this on a line, like I did with some other problems on my worksheet, right? But I have no idea how I would show 4a2 on a line! I have no idea how to do this. Thank
asked by Harper 
math
what is the unit rate of 4/12
asked by keyon 
english
I need help unscrambling this word!!!! AAAATTTLIIRRONNME its two words and its a name of a mall!
asked by lily 
math
Direct and Joint Variation 2. The volume V of a rectangular prism of a particular height varies jointly as the length l and the width w, and V = 224 ft when l = 8 ft and w = 4 ft. Find l when V = 210 ft and w = 5 ft.
asked by bob 
Physics
Using the following equation: F=ma Solve for m.
asked by Joe 
chemistry
hi this is a question for my lab. explain why the addition of bromine to transcinnamic acid takes place more slowly than the addition of Br2 to a normal alkene like 3hexene or cyclohexene thankss
asked by steve 
Science
Blow up a balloon & tie it up. Measure its diameter with a measuring tape. Place it in a freezer for at least an hour.Predict what happens to the balloon after some time in the freezer when its diameter is measured again. The answer given is,"The balloon
asked by beatrice 
Chemistry
These are the problems I am having trouble with. 1.The first step of the synthesis is described by the reaction below. When 1.750 g of Fe(NH4)2(SO4)2 6H2O is mixed with 13 mL of 1.0 M H2C2O4 , the theoretical yield of FeC2O42H2O is how many grams?
asked by Thanh 
Algebra
Foam fingers sold for $5. Spirit bracelets for $4. You sold 40 more foam fingers than bracelets and earned $965. Write a system of equations to describe this situation. Solve this system using as least 2 different methods. Explain each method.
asked by Jake 
math
What is the difference between a domain and a range? Describe a real life situation that could be modeled by a function.
asked by tera 
rechem please
if i had a beaker with .0001M of Cu solution and copper solid (anode) and another beaker with 1M Cu solution and Cu solid (cathode), how would i calculate the half reactions of these two? would the two equations be: cu2+(aq) > Cu(s) + 2e and ?
asked by sarah 
Math
Find the slope of the line containing the two points (1,1) and (5,3).
asked by Abbey 
chemistry
If Pdcb replaces naphthalene as an active ingredient in mothballs , what is the value of kf for camphor if a 0.260 m solution of PDCB in camphor decreases the freezing point of camphor by 9.8 degrees C. I am sure that you will use the formula ^T=kfm.
asked by betsy 
Chemistry
An unknown was prepared with the concentration of 0.000520 M. A Beer's Law plot was prepared using the absorbance values from standard solutions of ASA and a line drawn through all the points passed through the origin with a slope of 1550.2 M–1. The
asked by bon 
CHemistry....Please help...DrBobb
I posted this up yesterday: I have to use the equation : density= mass/ volume: But i don't know how to find out the volume using the edge length of the unit cell which is 5.88* 10^2 pm. CHemistry....Please help  DrBob222, Sunday, January 25, 2009 at
asked by Saira 
english
I need help really quick unscrambling this word!!! AAAATTTLIIRRONNME Its two words and its the name of a mall. the first words starts with I and the second starts with M. Pllllleeeeeeeeaaaaaasssssee help!!thanx
asked by lily jay 
math
Rebecca is a chef at Denny's Deli. She wants to try a new recipe, Sweet Potato Salad with OrangeMaple Dressing. The receipe, which serves 16, requires half of a cup of golden raisins. She wants to make enough of the salad for 104 servings. How many cups
asked by Briana 
8th grade
People can be lefthanded, righthanded or ambidextrous. The number of boys in Canadian secondary schools who are left handed is about 1/7 the number of boys who are righthanded. About 11% of boys are lefthanded. Write and solve an equation to determine
asked by Tyler 
chemistry please
if i had a beaker with .0001M of Cu solution and copper solid (anode) and another beaker with 1M Cu solution and Cu solid (cathode), how would i calculate the half reactions of these two?
asked by sarah 
SCIENCE
how do i reword this sentence to a 9th grade leverl. students know that charged particles are sources of electric fields and are subject to the forces of the electric fields from other charges.
asked by marie 
chemistry
Hi. We did an experiment on Quantitatve Determintion of Total Hardness in Drinking water by Complexometric EDTA Titration and I have a lot of questions. 1. What is the concept of complexometric titration and water hardness? (Why is it expressed in ppm
asked by jed 
CALCULUS
Find the xcoordinate of the absolute minimum of f(x) = x^3  x^2  x +1 on the interval [2, 2] The function f(x) = x^3  2x^2 is increasing on which of the following intervals? a)x4/3 only 0
asked by JIM 
physics
In what two situations will a car have balanced force?
asked by Keely 
English+D.O and I.O
Can someone teach me how to locate direct objects and indirect objects in a sentence?
asked by Chopsticks 
Physics
A small plastic ball of mass 6.30 103 kg and charge +0.150 µC is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making an angle of 30.0° with respect to the
asked by Z 
accounting
How do you think the accounts receivable system contributes to the overall success of a business? What impact does the accounts receivable systems has on cash flows and on customer service?
asked by China 
English
Hi i am writing a response paper for "Cathedral" by Raymond Carver. Im not sure but is this a proper thesis statement. In the short story Cathedral, by Raymond Carver, a man refers to Robert as "this blind man." Not only is he categorizing Robert, but he's
asked by Jake 
math
5(x+4)+2x=64(2x+3)+7 The answer my calculator gives is 19/15. How did they get that?
asked by Zi 
MATH
LAMONT IS REQ TO READ 1 BIO, 1 SCIENCE, AND 1 POETRY BOOK EACH MONTH. HIS BOOK CHOICES ARE: 2 DIFF BIOS 3 DIFF SCIENCE 3 DIFF POETRY HOW MANY COMBINATIONS OF REQ BOOKS ARE POSSIBLE?
asked by lANEY 
algebra 1
sqr 10 times sqr 16 over sqr 5
asked by mike 
biology
what would happen if you treated a protein (containing 3 SS bonds) with urea and mercaptoethanol? I know that the urea breaks hydrogen bonds and that the mercaptoethanol reduced disulfide bonds but what levels of the protein would be affected?
asked by kayla 
Algebra
Solve 3x +1 < 5 or 3x +1 > 4 By saying "solve," is it asking for me to show it on a line and in interval notation? Here's another: f(x) < 3 and f(x) > 4, where f(x) = 1/2x  7 I have no idea how to solve this! Please walk me through it! Thank you so much!
asked by Harper 
grammar
Base words that have the following suffixes: ment, less, en, able please help
asked by mouseemouse 
Physics
Problem 1 (5 Points) In the first application of interferometric methods in radio astronomy, Australian astronomers observed the interference between a radio wave arriving at their antenna directly from the Sun and on a path involving reflection from the
asked by Jimmy 
science
i have a question and i have no answer to it..... How does atmosphetic pressure change as you move away from the surface of Earth. i think the answer is gravity, I THINK NOT S.U.R.E. OF IT...................................................... thank
asked by elenny 
biology
what would happen if you treated a protein (containing 3 SS bonds) with urea and mercaptoethanol? I know that the urea breaks hydrogen bonds and that the mercaptoethanol reduced disulfide bonds but what levels of the protein would be affected?
asked by kayla 
chemistry
What is the % transmittance for each of these errors Washing a cuvette with DI water, then failing to rinse it with the solution to be measured Failing to wipe off fingerprints from the cuvette. Changing the wavelength from maxtomax+10 nm.
asked by leah 
French
WE are learning the subjunctive and we have a worksheet where we put the right tense of the word in parentheses in the blank. The question I am confused on is: Habituellement, apres qu'ils (finir)_______ leurs devoirs, leur mere les laisse regarder la
asked by Deanna 
math
eric has a baseball card collection in 3 albums. the smalles number of cards in an album was 54. the greatest number of cards was 72. what is the total number of cards eric has in his collection
asked by Kel 
biology
I would connect Mitosis with Identical cells. Why?
asked by Taylor 
english
For my english assignment i need to write a story about George and the Dragon. please could someone help me find a website that can help me write my story.A children`s version would be great . thankyou
asked by Dreamer 
english
What does it mean when someone says "Ads talk to...our subonscious fears and desires." ?? Give an example of an ad that does this..Please help :)
asked by Yana 
Eth 125 cultural diversity
journal entry of subordinate group member
asked by ann 
advertising
Does anyone know just how effective advertising a business or service is in a free publication that is mailed out to just anyone and left at free pick up points around a geographical area?
asked by Roger 
Geo  in french
I had to find some definitions for geography. I know the french isn't good...but i'll correct that. My definitions aren't very long...and i need help on expanding them SIDA: Le syndrome de l'immunodéficience acquise (en Anglais c'est AIDS – acquired
asked by Anonymous 
Algebra
Help, how do I do these? 1. 8y+4(2+y)=3(y4)+10y 2. Square root symbol 81 8+17+3 the sqaure root symbol doesn't hang over the entire equation, just the 81. thanks
asked by K 
Asap can someone pplz check these answers
Please check my answers I have 2 do other things right now
asked by Remy 
algebra
hi jiskha. how do you solve x4/x+2 + 2/x2 = 17/x^24? I factored it so it became x4(x+2)(x2)+2(x+2)(x2)=17, but I don't know where to go from there. thanx!!
asked by Alec 
5th grade
How do you add fractions with different denominators?
asked by Anonymous 
Algebra
Can someone help me with this please?? Find the volume of a cube on which the diagonal of a face measures 2. ACUBERT(2) B8 C12 D2 SQRT(2) E4 F6 SQRT(2)
asked by Tim 
hypothesis test
I am confused on what statistic test I should perform. I think it should be the ttest, which I have provided below. If the ttest is correct, how do I decide if I need to reject the null hypothesis. I get really confused on these things. Null Hypothesis:
asked by mchawk 
Geo
I had to find some definitions for geography. I know the french isn't good...but i'll correct that. My definitions aren't very long...and i need help on expanding them SIDA: Le syndrome de l'immunodéficience acquise (en Anglais c'est AIDS – acquired
asked by Anonymous 
science
why do you think some stalactites grow without a stalagmite below them, or some stalagmites grow without a stalactite above them?
asked by Bianca 
7th grade
Does anyone know the meaning of either of these quotes selfrespect is unconditional positive regard for self and respect is being able to accept people as perfect indiviuals that they are?
asked by Brooke 
chemistry
1. How do you know that NO2 (with a negative charge 1) is an anion and not ionic compound? 2. What are the SI standard units for length and mass? Why ins't there a standard SI unit for volume?
asked by becca  got final exam tomorrow help! 
ssWG
What is the name of the large gulf on the northern coast of australia? please please help
asked by elenny#1T0090 
chemistry
Why do most atoms form chemical bonds? What is the purpose of control in an experiment?
asked by Jenny 
7th grade
What is a word that starts with the letter U?
asked by Courtney 
Physical Science
When attempting to solve a gravitational potential energy equation, is the freefall acceleration always 9.8m/s2?
asked by Monique 
PreAlgebra
How would I make a frequency table with these numbers?: 465,599,567,529,243,250,268,319,294,316,325,364,358,237,270,534,479,614,283,575,591,555,508,609,584,304
asked by Lily 
math
In y=mx+b, the yintercept is given by the value of m. True or False
asked by Jack 
algebra
Graph y=2x+1, then choose 3 points above the line. Give the coordinates of each point and tell wether it is greater than, less than or equal to 2x + 1 at each point.
asked by Jake 
Algebra
How do you factor c^2+3c1? Thanks for your help Elise
asked by Elise 
Human Resource Management
Can someone help me with this because I cannot find in information on this one. What are the special challenges in reliability and what would be the impacts on employees and employers if the challenges were not addressed?
asked by Anonymous 
History
Is there a founder of Hinduism and if there is who is it?
asked by Sor 
Math
At the end of five days, Joseph had saved $30. If each day he saved $2 more than the day before, how much money did Joseph save each day?
asked by Colby 
History
Where can i find information on Confucianism?
asked by Jasmine 
biology
I will connect Gametes with A.Chromatid B. Cell C. Cell Division D. 46 E. IPMAT F. Cytokinesis AND WHY?
asked by Taylor 
algebra 1
1 over 2 sqr 32 times sqr 2 simplify the expression
asked by mike 
Is this a metaphor?
"Listen, your my prize pupil." Is he comparing the other person as a prize pupil without using like or as?
asked by Lee 
Re
Can you give me 10 facts on living churchyards.
asked by Anonymous 
english2
This is my next paragraph after the intro and consists of the summary. 1) Is the last line of my paragraph necessary? Does it belong somewhere else My next few paragraphs will about the content of the poem and what different phrases mean. Is that a good
asked by Anonymous 
Science Fair Project
I need some good ideas on salty and sour foods to use in my project. Anything will be helpful.
asked by Lindi Sibongo 
Business Law
Superior Used Cars Ltd. has as the most prominent display on its lot an immaculate, highly polished model which rotates slowly on a raised circular platform under powerful floodlights. The price is on the windshield  $17,700.00. Walking home one evening,
asked by Lisa 
Poem: Beware do not read this poem by Ishmeal Reed
Could someone please check these ASAP! 1. What story does the poem tell in the first three stanzas? Answer: The story that the poem is telling is a women who lived amoungst mirrors had locked herself in her house, and two villagers broke in, and she
asked by Remy 
English
Does anyone know how I can relate this quote too the real world ? Quote : "Respect is being able to accept people as pergect individuals they are" .
asked by Brooke 
math
In the number 2,763.4 what is the place value of the 6?
asked by fourth grade 
geography
what is the latitude and longitude of australia and united states of america
asked by jodi 
8th grade  math
3 = y/4 Does y = 12? Show the work
asked by Tyler 
MATH
Simplify completely: 3(49)+62(8+5)
asked by kara 
Math
What is the coefficient of the fifth term in the expansion of (x + 1)^8?
asked by Raven 
alg.2
square root of X + 3 =12
asked by need help 
medical
The original medical record is the property of the
asked by nicole 
psychology
How do I go about counterbalancing 4 variables??
asked by Linda 
history
Write a newspaper account of the Spanish Armada. Thanks! x
asked by Renee <3 
Computer science
If the last value of Period is less than the number of periods specified in the Parameters worksheet, increment the Period value by 1, otherwise blank the cell(i.e. ""). What does this mean in spreadsheer syntax for excel using the IF function
asked by tomi 
math
In the problem 2,763.4 what is the value of the 6?. I always get confused when there is a decimal involved.
asked by 4th grade math 
Math
How many prime numbers are between 050? Prime Number= Only has factors of 1 and it's self. For example. 3, it has 3 and one for the factors.
asked by Liley 
4th grade
i need help with a sentence in future tense (it clins to branches and twigs)
asked by francisco 
alg 2+urgent please.
2/the 6th root of 81 the answer gave an answer of "2 3rd root of 3/3" sorry i didn't type the root signs, i dunno how. can you show me how to work this?
asked by Chopsticks 
philosophy
discuss platonism as an ethical theory.
asked by clarence 
algebra 1
sqr 49 over sqr 4 simplify the expression
asked by mike 
7th grade
what are objects that are streamlined and what are the advantages?
asked by sarah 
social studies
what was the reason for l.p. ray building the dust pan?
asked by yamilex 
5th grade
Mike and Shannon harvested 110,793 pounds of winter wheat off of the Stone Ranch. There are sixty pounds in a bushel. They planted 23.3 acres of winter wheat. How many bushels per acre did the crop yield?
asked by Briana 
Math
What are the square numbers between 050?
asked by Liley 
Peer Review Article
I'm looking for 2 articles in Biology and I can't determine if they're peer review or not. Can anyone help with what I'm supposed to look for?
asked by Sam 
writing
where is the setting of charollet web
asked by ruth 
(Composition)
What is a Competencies Contract? where can I find an template?
asked by Bryan 
Precalc
if you have how do u do 2^2x  2^x  6 =0 (calc)how do u do it? using logs??
asked by Spencer 
algebra 1
sqr 9 over sqr 49 simplify the expression
asked by mike