Questions Asked on
November 7, 2009

Physic
A violin string has a standard length of 32.8 cm. It sounds the musical note A (440Hz) when played without fingering. How far from the end of the string should you place your finger to play the note C (523Hz)? answer should be in cm.
asked by K. 
adult education
A firm is assigned the network part 128.171. It selects an 10bit subnet part. a) Draw the bits for the four octets of the IP address of the first host on the first subnet.
asked by rocky 
Physics
A Doppler blood flow meter emits ultrasound at a frequency of 5.0 MHz. What is the beat frequency between the emitted waves and the waves reflected from blood cells moving away from the emitter at 0.15m/s? Assume that v_sound=1540m/s in blood.
asked by N. 
chemist ry
if 500 g of KCLO3 decomposes and produces 303 g of KCL, how many grams of O2 are produced?
asked by barbie 
Physic
A fan at a rock concert is 30 m from the edge of the stage. The sound intensity level at the edge of the stage is 110 dB. The fan's eardrums have a diameter of 8.4mm. How much energy is transferred to each eardrum in one second? (Hint: It may help to asume
asked by Jimmy 
Chemistry
A compound containing 3 atoms of carbon and 8 atoms of hydrogen is combined in a reaction with oxygen molecules. The two end products of this equation are carbon dioxide and water. What element should you look at first in balancing this equation? A. oxygen
asked by William 
math
At noon, ship A is 40 nautical miles due west of ship B. Ship A is sailing west at 18 knots and ship B is sailing north at 23 knots. How fast (in knots) is the distance between the ships changing at 4 PM? (Note: 1 knot is a speed of 1 nautical mile per
asked by adrienne 
Physic
A wave pulse travels along a string at a speed of 160cm/s. Note that part a is independent and refer to changes made to the original string. Part A:What will be the speed if the string's tension is doubled? I was thinking that it should be 320...but i
asked by Arooj 
History
How did geography affect arab life
asked by Nick 
Physic
A 2.2 mlong string is fixed at both ends and tightened until the wave speed is 50 m/s. What is the frequency of the standing wave shown in the figure? Answer in Hz. I've been working on it for a while but cant figure out...
asked by Danny 
Physics
A child has an ear canal that is 1.3cm long. At what sound frequencies in the audible range will the child have increased hearing sensitivity?
asked by A, 
physics
A 2.00 kg ball is attached to a ceiling by a 1.40 m long string. The height of the room is 3 m. What is the gravitational potential energy of the ball relative to the ceiling? What is the gravitational potential energy of the ball relative to the floor?
asked by Anonymous 
chemistry
The following redox reaction occurs in basic aqueous solution. When balanced with the smallest whole number coefficients, what is the coefficient for OH(aq)? Mn(OH)2(s) + MnO4(aq) = MnO42(aq).  after doing the question i got 1..but i don't know if im
asked by John 
Math
Show that sinx = (square root of) 1  cos^2x is not an identity
asked by Anonymous 
Physics
A whistle you use to call your hunting dog has a frequency of 24 kHz, but your dog is ignoring it. You suspect the whistle may not be working, but you can't hear sounds above 23 kHz. To test it, you ask a friend to blow the whistle, then you hop on your
asked by AP 
physics  HELP ASAP!
A 3.60 kg ball is dropped from the roof of a building 184.8 m high. While the ball is falling to earth, a horizontal wind exerts a constant force of 12.1 N on the ball. (acceleration of gravity = 9.81 m/s^2) How far from the building does the ball hit the
asked by Desperate Help! 
advanced functions
Prove that cscx / cosx = tanx + cotx
asked by ariza 
Math
Draw a diagram to represent the identity (a + b)2 = a2 + 2ab + b2.
asked by Mota 
Physics
Pleae help! A uniform 2m long plank is supported at each end by ropes. The plank has a mass of 300grams and a 1 kg weight is attached 0.5m from one end. Find the tension in each supporting rope.
asked by Inascent 
Calculus
The linear approximation at x = 0 to sin (5 x) is A + B x. Find A and B?
asked by Salman 
Math
1.If a person jogs at a rate of 5 1/2mi/h for 3 1/2 h in a week, how many calories do they burn? 2. If a person runs in place for 15 minutes, how many calories will be burned? 3. If a person crosscountry skis for35minutes, how many calories will be
asked by Anonymous 
History
Can you please explain to me what this means. This is what I think that it means. Jackson did not agree with states having any right to nullify a federal law. An ordiance was passed by the people of South Carolina because they felt that the Tariffs of 1828
asked by Carla 
Calculus
Use linear approximation to estimate the amount of paint in cubic centimeters needed to apply a coat of paint cm thick to a hemispherical dome with a diameter of meters
asked by Salman 
math
The value of a car decreases at a constant rate as it grows older. When the car is 2 years old, it is worth $23,000. When the car is 5 years old it is worth $15,500. Write and equation relating y (value of the car $) to x (age of car). Is it
asked by sophia 
math
Mr. hernandez had to interview a total of 63 households in his assignment. H has already finished 28. what percentage of the households in his assignments has he finished? (round your answer to the nearest tenth of a percent.)
asked by Anita 
United States government
If the issue is whether a person's civil rights were violated in a court decision,through what levels of courts might that person appeal
asked by laura 
To Ms. Sue
Ms. Sue you said that I answered this adequately. I want to add more, it doesn't look complete, I will really appreciate it, if you could help me out a little,thanks. Before the uprising in Haiti, would Europeans have believed that a slave revolt on this
asked by Sara 
4th grade science
What kind of heat transfer cause Earth's najor wind pattern?
asked by Damian 
Math
Use linear approximation, i.e. the tangent line, to approximate 1.6^3 as follows: Let f(x) = x ^3. The equation of the tangent line to f(x) at x = 2 can be written as y=12x16 Using this, we find our approximation for 1.6 ^3 is ???????
asked by Salman 
adv functions
Show that tanx= (sinx/ cosx) can be written as: tan(xy) = (tanx  tany) / (1+ tanxtany)
asked by  
chemistry
The redox reaction below occurs in acidic solution. Balance it with the smallest whole number coefficients and determine the coefficient for H+. MnO4(aq) + HNO2(aq) > Mn2+(aq) + NO3(aq) when i did it..i got the answer as1...but im not to sure..help?
asked by John 
science
If a cube of Jello is cut into two pieces, what property of the pieces did not change?
asked by Duane 
social studies
what impact did the French and Indian War have on Forida?
asked by florida studies weekly 
algebra
A wholesaler mixed coffee beans worth $6/kg with another kind worth $8.80/kg. The 16kg mixture was worth $6.70/kg. How many kilograms of each type was used?
asked by Joe 
Organic Chemistry
How is the rate of adjusted when using a sand bath as a heat source?
asked by Nicole 
Algebra 2
solve. If the equation has no real solutions, say so. Square root of 3x+4= x
asked by Trisan 
Math
A fence 4 feet tall runs parallel to a tall building at a distance of 2 feet from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?
asked by Salman 
college
how can you differentiate between oxalic acid, citric acid and tartaric acid with CaCl2 test? show the chemical reaction?
asked by Anonymous 
math213
Wally kept track of last week’s money transactions. His salary was $150 plus $54 in overtime and $260 in tips. His transportation expenses were $22, his food expenses were $60, his laundry costs were $15, his entertainment expenditures were $58, and his
asked by brina 
statistics
A researcher conducts a t test for dependent means in which it is predicted that there will be a decrease in unemployment from before to after a particular jobskills training program. The cutoff "t" needed is 1.8333. The standard deviation of the
asked by ronnie 
SocialsMs. Sue
What was the purpose of the continental system? Did it succeed or fail? Imagine that you are a senior advisor to Napoleon. You have been asked to prepare a memo outlining the advantages and disadvantages of disrupting Britain's trade with Europe. Your memo
asked by Sara 
Math (calc)
Given the function: f(x)=x^3(x2)^2 , on the interval [1,3] find the domain and Asymptotes ...Isn't the domain (1
asked by Elizabeth 
human resource managment
4. Script for orienting new employees o You may use the following opening sentence to start your script: “We, in HR, feel that it is important to address some sensitive issues during your early employment with our company.” o Create a script that can
asked by scooby 
Calculus
Determine where the absolute extrema of f(x)=3(x^2)+7x on the interval [1,3] occur. 1. The absolute maximum occurs at = 2. The absolute minimum occurs at =
asked by Salman 
Chemistry (lab)
What are the units of retention time in gas liquid chromatography? Minutes or seconds?
asked by Anonymous 
maths grade 1
Tom has half as many pennies as Sue. Sue has 20 pennies. How many pennies does Tom have ?
asked by dommini 
Cost Accounting
Katherine Company's Sales Budget Has The Following Unit Sales Projection For Each Quarter Of The Calendar Year 2009. January March 540,000 AprilJune 680,000 JulySeptember 490,000 OctoberDecember 550,000 Total 2,260,000 Sales for the first quarter of
asked by Jessi 
Chemistry
I need some help with net ionic equations. I can do single replacement, double replacement, etc., but I don't get stuff like gas formingreactions or the trends when stuff like a strong acid and water are the reactants. Examples: 1. Moist sodium hydroxide
asked by Nikki 
Physics
Hi, I had some questions about Physics and Newton’s Three Laws of Motion and was wondering if someone could possibly help me. I wasn't sure if my answers were correct and I need to make sure they are. #1 Write out in words what “acceleration ~ net
asked by Hannah 
human rescource management (am i correct)
For your final project, you will develop documentation for human resources professionals to manage a specific employment position. The materials you create would assist HR professionals in the four functions of job analysis, selection, orientation, and
asked by scooby 
physics
A particle is released on the smooth inside wall of a cylindrical tank at A with a velocity v which makes an angle beta with the horizontal tangent. When the particle reaches a point B a distance h below A, determine the expression for the angle theta made
asked by Jessi 
Chemistry
Which of the following elements does not form bonds easily because it has a full outer shell? A. Aluminum B. Carbon C. Helium D. Calcium
asked by William 
Literature
I had to write an essay analyzing a short story. I chose The Birds by Daphne du Maurier and this is what I got: Daphne du Maurier’s short story The Birds is a story of an old war veteran, his family, and how they battle fierce birds. It starts out on the
asked by mysterychicken 
Calculus
The circumference of a sphere was measured to be 74.000 cm with a possible error of 0.50000 cm. Use linear approximation to estimate the maximum error in the calculated surface area? Also Estimate the relative error in the calculated surface area.
asked by Salman 
Physics
Hi, I had some questions about Physics and Newton’s Three Laws of Motion and was wondering if someone could possibly help me. Some of the questions I wasn’t sure about the answers. #1 Write out in words what “acceleration ~ net force” means. My
asked by Hannah 
English
i need poetic terms for the song thriller by Michael Jackson? It's close to midnight and something evil's lurking in the dark Under the moonlight, you see a sight that almost stops your heart You try to scream but terror takes the sound before you make it
asked by Arishdeep 
spanish
how do u anwser this question in spanish ¿Qué haces los sábados?
asked by katie 
MATH
Rename each fraction as a mixed number. 17/4.
asked by Bradley 
Math
Write each of the following ratios in simplest form. The ratio of 5 3/5 to 2 1/10
asked by Anonymous 
Math
Business and finance. A store has Tshirts on sale at 2 for $5.50. At this rate, what do five Tshirts cost?
asked by Anonymous 
Algebra 2 URGENT PLEASE HELP
Solve. If the equation has no real solution, say so. Square root 3x+4 =x
asked by Anonymous 
Physics121
What are the three longest wavelengths for standing sound waves in a 124cmlong tube that is (a) open at both ends and (b) open at one end, closed at the other?
asked by Barry 
science
please list out 6 functions of the blood and please write the reference of it
asked by jolomi skinn 
sat
if i don't finish my essay, how many scores will i get?
asked by Mercedes 
Psy
In threeto fiveparagraphs, describe a time when you tried to learn a good habit or to unlearn a bad one. Whether or not you are still working on making this change, describe the patience it takes to stick to your goals and make a change for the better.
asked by shannen 
Geometry HELPP
I need a conclusion and reason for the following statements. 1. Angle C is supplementary to angle R Angle D is supplementary to angle R Conclusion: ? Reason: ? 2. XY  9 = ST  9 Conclusion: ? Reason: ? 3. Ray CD bisects angle BCR Conclusion: ? Reason: ?
asked by Anonymous 
math
Rationalise the expression 1/(ã2 + ã3).
asked by Mota 
Math
Use Pascal’s triangle to read off the coefficients of the powers of x in the expansion of (1 + x)n for different values of the positive integer n. Check the results for n = 3 by expanding (1 + x)3.
asked by Mota 
English
R for run on sentence, CS for comma splice, F for fragment, and C for correct sentence. Some correct sentences can be punctuated more effectively, however. 1. Carlos took the job and he was happy to get it. 2. Tono loves Chinese food, he eats it three
asked by Jess 
World History
Is the story of how the Trojan war started with Helen, and Paris in the Iliad? Thanks:)
asked by Rebekah 
College Chemistry
Are my calculations correct of i came up with 50.71g of CaH2 to the question, "How many grams of are needed to generate 54.5 of gas if the pressure of is 815 at 22?"
asked by Jena 
History
After the election of 1828 why did people consider andrew jackon "the rise of the common man"? I have searched put I cant find anything that says why he was known as the common man.
asked by Carla 
Art
i need to choose a paint where design element and visual element in 1 paint could you help me to choose that paint and telling me what elements in it thank you
asked by Ahmad 
economic
I HAVE AN ASSIGNMENT WHERE I HAVE TO PLOT POINTS ON A GRAPH IN EXCEL, THE INFORMATION GIVEN IS QS=2P20 AND QD=802P AND I WAS TOLD TO USE PRICES 10,20,30,40,50 AND QUANTITIES 5,10,15,20,25,30,35,40 FOR THE GRAPH. I HAVE NO CLUE WHAT TO DO FOR THE CHART IN
asked by jay 
English
I have a question. When your using a quote is it if it's 5 or more lines its indented in 5 spaces and if it's 4 or less lines it goes into your paragraph. How does that go again.
asked by Meghan 
homework
Airline work: Topic: Philippines 1. Does Philippine Airlines check your ticket before take off or when your in the sky? (there is a posiblitiy that they could do both or none at all) 2.Did Philippine Airlines change there seat and improve there seats to
asked by garrick 
math
Suppose a license plate contains four digits.The probability of a license plate having an even or odd digit is the same.What is the probabilty of having a license plate with all even digits.
asked by melrose 
english
who becomes panchito's friend?
asked by ashwaq 
law ethics in medicine
when must employee be trained in a hipaa
asked by dori 
Math
Consider the function f(x) = 7 x + 3 {x ^ 1 }. For this function there are four important intervals: (infinity, A], [A,B),(B,C), and [C,infinity) where A, B and C are either critical numbers or points at which f(x) is undefined. Find A, B and C
asked by Salman 
Math
Determine whether each pair of fractions is proportional. 5 75 _ ? __ = 8 120
asked by Anonymous 
math
12 gallons of paint 9 gallons of paint _______________ =_____________ 8,329 ft2 1,240 ft2
asked by Anonymous 
Algebra 2 URGENT
Solve. Square root of 3x+4=x BobPursely can you please show me the work
asked by Trisan 
writing ASAP.
i'm work on a book project on ameila earhart.The queston on my book report is ...How is the provied by the author imporant or relatable to today's modern society ?Please tell what this means and give an example.
asked by lauren 
Chemistry
Could some please tell me if I did these problems correctly? (I know that I did not Cancel common aqueous ions yet) Question: Write the net ionic equation for the following 1)Mixing solution of barium acetate and sodium phosphate 2)Mixing solution of
asked by Dan 
statistics
a mathematically defined curve that is the comparison distribution used n ANOVA is called the?
asked by k 
psychology
hi, i need help please can you help me Asahe oves quickly around the restaurant where she works as a waitress, Alicia fnds herself humming in her head the phrase,"Just whistle while you work!" this is an example of a/an A) proposition b) prototype C)
asked by loreta 
Vocab.
Okay, so I have to unscrammble these letters to get the final message: w u n o r e v o o s t s r b i o i a e u c o u s h r c r d e d _ _ _'_ _ J_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 20 W_ _ _ _! I'm pretty sure the first two words are
asked by Alyssa 
330 mgt
Applying information regarding the personality traits, what are the personal characteristics that you believe would contribute to the success of entrepreneurs/intrapreneurs?
asked by meshelle 
calculus
find dy/dx of y^3xy=1
asked by Jackie 
math
Melons cost QR1.5 each and apples cost QR3.75 per kilogram. A man buys apples and melons at the supermarket. Write a formula to describe the total cost of his purchase. Investigate how many melons and how many kilograms of apples he could buy for QR30.
asked by Mota 
limits
lim as x> infinity sec^2(1/x)
asked by Reen 
Algebra
17Identify the vertex, axis of symmetry and xintercept(s) of F(x)=(x+5)^26. I have no idea how the x intercepts are 5 +/ sq. root 6 and 0. can you show me how this came to be? I factored it so it would be x^2+10x+19, but there's no common factors in
asked by Erin 
maths
differentiate using product, chain and quotient rule ln x / 5x7 and e^x / 2x^3  1 could you help me out with the first and just point me in the right direction for the first i cant seem to get the steps in the right order and then it gets all muddled
asked by Amelia 
french
we have been given a text and have to find words in it. we have to find the word bothers/upsets all i know is that it begins wit 'in' could it be indispose as it is the only word beginning with it we also have to find (here)encounter an it begins with
asked by phil 
religious education
please could someone help me find a websie about a man called billy mccurrie. i need to answer 2 questions about him: what events made him not believe in God and what events made him believe in God. thankyou for your time to help me
asked by Ryder 
integrated physics and chemistry
classes of steel and iron are defined by the amount of WHAT? and other elements present in the alloy. is it zinc,tin,carbon,or aluminum?
asked by logan 
integrated physics and chemistry
what is the main ingredient in 22karet gold? is it copper,tin,gold,or steel?
asked by logan 
Math
Which is the better buy: 5 lb of sugar for $4.75 or 20 lb of sugar for $19.92?
asked by Anonymous 
college
Why is it not possible to formulate a model that accurately represents reality
asked by Luke 
Math
Find each rate 240 pounds of fertilizer __________________ 6 lawns
asked by Anonymous 
science
Name three freshwater resources and 3 ocean water resources and their descriptions
asked by tommy 
Math
x'2+ 10= 3x+17. Use the quadratic formula to solve.
asked by JEFF BOMB 
History
Can you please explain to me what Worcester v. Georgia was. I have searched this and read many articles. But I'm really confused and don't understand it. Your help would be appreciated. Thank you
asked by Carla 
Algebra
0.3x0.2y=4,0.5x+0.5y=15/9 solve
asked by Myra 
math
y=(x+3)(x1)
asked by Nat 
Math
Crafts. Marc took 3 hours (h) to mow a lawn while Angelina took 150 minutes (min) to mow the same lawn a week earlier. Write the ratio of Marc’s time to Angelina’s time as a ratio of whole numbers.
asked by Anonymous 
Marth
Write the proportion that is equivalent to the given statement. If Maria hit 8 home runs in 15 softball games, then she should hit 24 home runs in 45 games
asked by Anonymous 
Math
12 gallons of paint 9 gallons of paint _______________ =_____________ 8,329 ft2 1,2402 ft2
asked by Anonymous 
science
what are the four major fields of earth science? please help and thank you
asked by needhelp 
Algebra 2 URGENT PLEASE HELP
Solve. Square root of 3x+4=x
asked by Trisan 
gr9science
how do u convert g/ml to Kg/m^3 ?
asked by becca 
algebra
Whats 5 10ths of a dollar?
asked by Alexia 
3rd grade
shelby had $18.50. She spent $7.25 at the car wash. Write an expression that shows how much she spent.
asked by sheila 
Math
Find each rate 240 pounds of fertilizer __________________ 6 lawns
asked by Anonymous 
math
what is 15% of 250,000$
asked by christina 
Math
3xsquared9x11 How to map unto a graph
asked by Anonymous 
science
how does adding copper to gold change the economic value of the gold and the properties of the gold?
asked by logan 
Math
The ratio of 7 times to 3 quarters
asked by Anonymous 
math
Crafts. Marc took 3 hours (h) to mow a lawn while Angelina took 150 minutes (min) to mow the same lawn a week earlier. Write the ratio of Marc’s time to Angelina’s time as a ratio of whole numbers.
asked by Anonymous 
algebra two
square root of 3x+4=x
asked by Sarah 
6th grade
name the weakness for article of conferation
asked by Anonymous 
7th grade
I need to write a paper entitled Heritage Research Project, but I am not quite sure how to do this.
asked by Deion 
essay
what are some good topic to do a personal statment on for an college application?
asked by kate 
maths
if f(x)=(x^2)(e^x) prove by induction that the nth derivative is (x^2 +2nx +n(n1)(e^x) thanks
asked by claire