Questions Asked on
February 13, 2007

Calculus
The power P (in W) generated by a particular windmill is given by P = .015 V^3 where V is the velocity of the wind (in mph). Find the instantaneous rate of change of power with respect to velocity when the velocity is 5.7 mph. P = 0.015 V^3 dP/dV = 0.045
asked by Anonymous 
AP Chemistry
(a) What is the pH of a 2.0 molar solution of acetic acid. Ka of acetic acid = 1.8 x 10¯5 (b) A buffer solution is prepared by adding 0.10 liter of 2.0 molar acetic acid solution to 0.1 liter of a 1.0 molar sodium hydroxide solution. Compute the hydrogen
asked by Dave 
Chemistry check
First, percent error can be negative, correct? Because in my lab I got 32%. Here are my questions that I need checked: 1. List possible manipulation errors that might contribute to the following errors in results: 1) obtaining a significantly larger
asked by Jay 
English
Act 1 Scene 1 .. Romeo & Juliet I don't know the answer to two of my questions for Romeo and Juliet the first one . . . Although Rome and Juliet is a tragedy, much of the play is quite comic. Outline briefly the comic elements in this scene. To whatextent
asked by Becca 
math, help
For the following set, which number has the largest absolute value? 4,1,12,20,19,0 Possible Answer of choice: A)0 B)19 C)20 D)1 wouldn't it be postive 20 but its not within the choices. What is the absolute value of 20? Absolute value is the distance
asked by jasmine20 
Maths complex numbers
Find tan(3 theta) in terms of tan theta Use the formula tan (a + b) = (tan a + tan b)/[1  tan a tan b) in two steps. First, let a = b = theta and get a formula for tan (2 theta). tan (2 theta) = 2 tan theta/[(1  tan theta)^2] Then write down the equation
asked by Jake 
Science
As an environmental science teacher, how would you respond to someone who tells you (a) that he or she does not believe in biological evolution because it is "just a theory," and (be) we should not worry about air pollution because through natural
asked by Christy 
Modern World History
World War One Can someone tell me the final chain of events that led the world to war.. What was the final chain of events that led the world to war? http://en.wikipedia.org/wiki/World_War_I Be sure to go to the box which serves as a table of contents for
asked by Bryan 
MAth
Please help. a). How many ways can a person select three appetizers and two soups if there are six appetizers and five soups on the dinner menu? b). Three married couples have bought tickets for six seats in a row for a movie.  HOw many ways can they be
asked by Susie 
alegebra
Mr. Baker wants to enlarge a photo that is 5 by 7 inches so that the dimensions are 3 times larger than the original. How many times larger than the original photo will the area of the new photo be? I am sorry that nobody responded to your post earlier. If
asked by H.C. 
physics (please help)
Two identical but separate strings, with the same tension, carry sinusoidal waves with the same frequency. Wave A has an amplitude that is twice that of wave B and transmits energy at a rate that is _____ that of wave B. a)half b)twice c) onefourth d)four
asked by susan 
essentials of economics
what do you known about economics becouse i do not got it These sites may help you. http://www.mcwdn.org/ECONOMICS/EconMain.html http://www.investopedia.com/university/economics/ notes on social protection health education defence public order and safety
asked by delisha 
English Poetry
Could someone please explain Charlotte Smith poem "on being cautioned against walking on a headland overlooking the sea" ? or can you tell me where I can get explanations to poetry which I find very difficult to understand. thanks I don't know this poem
asked by Elda 
chemistry
the number of protons in the nucleus of an atom is called the.... atomic number
asked by alejandra 
Physics
A solid uniform sphere has a mass of 2.0 104 kg and a radius of 1.5 m. What is the magnitude of the gravitational force due to the sphere on a particle of mass m = 0.2 kg located at a distance of 1.6 m from the center of the sphere? What if it is 1.1 m
asked by winterWX 
Business
In planning a new item, a manufactuer assumes that the number of items produced x and the cost of dollars C of producing these items are related by a linear equation, Projections are that 100 items will cost $22,000 to produce. Find the eqaution that
asked by David 
algebra 1 scale drawing
On a scale drawing of steps with the base being 1 3/4 inches and the steps going up 1/4 inch each on the drawing.Which scale was used for the drawing if the actual height of each step is 6 inches? A. 1/8 = 1 foot, 10 ines the are hard as heck 2 its hard
asked by Hailey 
Physics
In 1956, Frank Lloyd Wright proposed the construction of a milehigh building in Chicago. Suppose the building had been constructed. Ignoring Earth's rotation, find the change in your weight if you were to ride an elevator from the street level, where you
asked by winterWX 
Physics
A square of edge length 19.0 cm is formed by four spheres of masses m1 = 6.00 g, m2 = 3.50 g, m3 = 1.00 g, and m4 = 6.00 g. In unitvector notation, what is the net gravitational force from them on a central sphere with mass m5 = 2.20 g? _N i + _N j You
asked by winterWX 
Religions of the World
Find two Web sites dealing with indigenous cultures and/or religions. Discuss how modern civilization has impacted the spiritual lives of the indigenous peoples you explored. Are the indigenous religions still being practiced today? If so, how have the
asked by Chris 
Trig  Ferris Wheel
A ferris wheel is 250 ft in diameter and revolves every 40 second when in motion. You step up to the seat on the wheel at the bottom 2 feet about the fround so you are sitting 4 feet about the ground at start. Derive the formula for the height of your seat
asked by Anthony Gonzalez 
writeacher
because in the previous message about the pemdas it is parenthesis,exponents,multiplication,division,addition,subtraction therefore how that little part that looks like this 12 divided by 2*2 it would be multiplication first then SORRY THEN DIVISION SO
asked by jasmine20 
PRECALC! HELP ASAP!!
A television antenna sits on the roof. Two 78foot guy wires are positioned on opposite sides of the antenna. The angle of elevation each makes with the the ground is 23 degrees. How far apart are the ends of the two guy wires? I have no idea where to
asked by anonymous 
physics
Two sinusoidal waves travel in the same direction and have the same frequency. Their amplitudes are Y1 and Y2. The smallest possible amplitude of the resultant wave is: a) Y1 + Y2 and occurs if they are 180 degrees out of phase b)[Y1  Y2] and occurs if
asked by susan 
Religions
Consider the interrelatedness of everything in the cosmos as it is expressed in many indigenous religions. How do you think the importance of these relationships developed? What spiritual purpose do you think they serve for indigenous peoples? Your
asked by Chris 
Science
Describe the climate and physical characteristics of that biome and the types of organisms that live within it. Give examples of and describe symbiotic relationships between those organisms. Be sure to include at least one example from each of the
asked by Jerry 
drwls, is this correct,math
drawls this is from the previous post is this correct. solve the system by subtraction. 5x3y=13 4x3y=11 equation#2 woudl be 4x3y=11 3y = 4x+11 y = (4)/(3) x  (11)/(3) so now i substitute it to equation #1 5x  3((4)/(3)x  (11)/(3)= 13 5x  4 x +11 =
asked by jasmine20 
physics
Let f be the frequency, v wav the speed, and T the period of a sinusoidal traveling wave. The correct relationship is: a)f=1/T b)f=vwav + T c)f=vwavT d)f=vwav/T e)f=T/vwav My thoughts: I think the answer is D.Since frequency is equal to T=1/f so f=1/T.
asked by susan 
math, correction
Find the LCM for 4 and 20 My answer is: LCM IS 20 Your answer is right
asked by jasmine20 
need good sites
i'm looking to find a good site for learning the basics of biochemistry.... (high school level)... any recommendations? http://www.google.com/search?sourceid=gmail&q=basics%20biochemistry These search results have several sites that may help. =)
asked by sciencestudent 
Math
Driving down a mounain Jim finds that he has descended 1800FT in elevation by the time he is 3.25 mi horizontally away from the top of the mountain find the slope of his decent to the nearest hundreth. I am sorry that you did not get a response to your
asked by David 
algebra
Maurice drove 400 km from Edmonton to Battleford in 1 hour less time than it took Martin to drive the same route from Battleford to Edmonton. If Maurice drove 20 km/h faster than Martin, at what speed did each of them drive? Show a complete algebraic
asked by Shay 
math,help!!!!
How do i do thois problem?Please help. Problem #1 solve the system by subtraction. 5x3y=13 4x3y=11 Subtract the lower equation's left and right terms from the upper equation's corresponding terms. The first step will get you this: x = 2 Now that you know
asked by jasmine20 
math,correction,plz
Evaluate (155)/[((12)/(2*2))2] my answer that i keep getting is 1 am i even correct or completely wrong The ans is 10 see i had that for the answer but when i revised the rule for order of operations. it says to divide first then multiply left to right
asked by jasmine20 
math,correction
can you check if how i solved it to show that my answer is no is correct. Is 4 a solution to the equation 7x5+3x=6+x10 This is what i did: 7(4)5+3(4)=6+(4)10 28512=210 45=8 so the answer is no 4 is not the solution to the equation. Yes this
asked by jasmine20 
science
what is the voltage of a wall socket? Most in the U. S. are 120 volts. There are more 220 v sockets being installed for operating electric stoves, heat pumpts, etc now than in the "old" days.
asked by Bob 
math in spanish
can someone translate this for me so I can understand the problem in English? Puedes doblar para multiplicar 7 x 3? explica. Can you double in order to multiply 7 x 3? Explain.
asked by Pam 
science experiment
See the question from earlier regarding how many variables are in the experiment. I think speed of stirring is a variable. So, my answer would be 3 variables. One for water temp., speed of stirring, and the calcium carbonate solubility. Is this right? I
asked by Hailey 
Physics recheck
Let f be the frequency, v wav the speed, and T the period of a sinusoidal traveling wave. The correct relationship is: a)f=1/T b)f=vwav + T c)f=vwavT d)f=vwav/T e)f=T/vwav My thoughts: Since frequency is equal to T=1/f so f=1/T. Vwav is connected to f by
asked by susan 
English
Hi i wondered if you could tell me what a definition for forbidden love would be. And I also needed to know how you think i might be able to display forbidden love. Using drawings etc> Love can be forbidden by many different factors  families (Romeo and
asked by Nicky 
History
Brigham Young chose the Great Salt Lake valley because of its _________ (9 letter word) http://unicomm.byu.edu/about/brigham/ Scroll down and go to page 4. http://www.pbs.org/weta/thewest/people/s_z/young.htm http://en.wikipedia.org/wiki/Brigham_Young Be
asked by Carl 
econ question part 3
This is the chart Canada produces 50 wheat and 20 Microchips Jpn produces 2 wheat and 12 Microships the chart shows the productivity of ONE SINGLE UNIT of resource so if the question was Suppose that prior to the trade, each country allocated half of its
asked by tofu 
Algebra 2
I need help!!!! I have a paper entitled Study Guide and Intervention: Multiplying and dividing Rational expressions? I don't get the examples, and I just don't understand it. Help please MOre detail needed, sorry. What exactly do you not get
asked by Mary 
Math
Three cards are drawn from a deck of 52 playing cards and not replaced. Find the probability of the following: a). Getting three jacks b). Getting an ace, a king, and a spade in that order. c). Getting a club, a spade and a heart in that order. d). Getting
asked by Dan 
economics
Suppose a company has the following costs: Labor $400 Equipment $300 Materials $100 A)What is the total accounting cost? B)What is the total economic cost? In general, accounting costs are the dollars paid for goods and services. In your example $800.
asked by Kelai 
chemistrylab
2.What does it mean to “follow the course of a reaction”? I would imagine it means to find the overall order of the reaction and make it in to a rate law equation. That's part of it. It can mean, in addition, to knowing any intermediates formed and how
asked by Rob 
math help
How do you figure out a related sentence for fractions? (here is the problem) t + 1/8= 3/5 multipy the 1/8 by 5/5 or it is 5/40 Then, mulipy the 3/5 by 8/8 to 24/40 Finally subtract 5/40 from both sides. Think out why it is done this way. What do you mean
asked by Emily 
physics (please help)
Let f be the frequency, v wav the speed, and T the period of a sinusoidal traveling wave. The correct relationship is: a)f=1/T b)f=vwav + T c)f=vwavT d)f=vwav/T e)f=T/vwav My thoughts: Since frequency is equal to T=1/f so f=1/T. Vwav is connected to f by
asked by susan 
blues
where did blues started http://en.wikipedia.org/wiki/Blues Good explanation here. =)
asked by estrella 
GOVERNMENT HELP
I need some expertise help to make sure I got the correct answers. Thanks ahead of time. Next to each of the ten items write STRICT or LIBERAL, depending how the concept relates to the Constitution. 1. State power should be restrained  STRICT? 2. National
asked by Suzi 
Earth Science
What is the name of scientists who study earthquakes?? ♥ thanks Seismologists
asked by Anonymous 
Physics
Let f be the frequency, v wav the speed, and T the period of a sinusoidal traveling wave. The correct relationship is: a)f=1/T b)f=vwav + T c)f=vwavT d)f=vwav/T e)f=T/vwav My thoughts: I think the answer is D.Since frequency is equal to T=1/f so f=1/T.
asked by susan 
chemistry
atoms of the same element with different atomic masses are called isotopes. I don't do these fill in the blank problems without limit. You need to do some work before posting many more. Of give us some indication that you are doing more than just filling
asked by alejandra 
B math
12 2/8% = . what? 12 2/8% = 12 1/4% = 0.1225
asked by sis 
History
I just need a quick reference was Lee on the union forces or the confederate. I always confuse him and grant. Ok i got it now.
asked by Amel 
Report
How do you do a bibliography? Bibliographies are also known as Works Cited pages these days because we use so many more sources than just books and magazines (things in print). Here's a good place for information on citing in MLA format:
asked by Shaylee 
necklace
I have a supposedly white gold choker. It is stamped F on the back. No other markings. Can you tell me what that means? Thank you for using the Jiskha Homework Help Forum. You don't mention if your choker is antique or not. Between 1883 and 1904, Silver
asked by Gail 
Science
Doing an experiment to find the solubility of calcium carbonate in 100 ml of water. The experiment is using water temp 20 degrees and 35 degrees celcius and also using slow and fast stirring speeds. How many variables are being used? Is the amount of water
asked by Hailey 
assignment help please
Hi , My daughter has a 45 page assignment about how bread is made,From the time the seed is planted and the stages that follow till the the bread is at the stores.I cant find any nice webpages and pictures .Please do asist me . thnaks so much , hope to
asked by shakira 
math
how do you find the area of a triangle? 1/2 x B x H (one half times the base length times the height of the triangle)
asked by jules 
math
solve the matrix equation for ax=bx+c for x={x1} { x2} where a= { 6 0} b={1 2} c= {1] [15 1} { 4 2} [2} please show work if you can
asked by brandon 
Physics (please help)
Two sinusoidal waves travel in the same direction and have the same frequency. Their amplitudes are Y1 and Y2. The smallest possible amplitude of the resultant wave is: a) Y1 + Y2 and occurs if they are 180 degrees out of phase b)[Y1  Y2] and occurs if
asked by susan 
Probability
At a fair run by a local charity organization, it costs 50 cents to try one's luck in drawing an ace from a deck of 52 playing cards. What is the expected profit per customer if they pay $4 if and only if a person draws an ace. I am sorry that nobody has
asked by Martha 
Modern World History
What was Von Bismark view of dealing with France? http://en.wikipedia.org/wiki/Von_bismark
asked by Bryan 
math,help
can some one help me set this up into eqautions to be solved please. One number is 6 more than another. If the sum of the smaller number and 3 times the larger number is 34, find the two numbers. x=10 y=4 Those are the answers but how do you get to them. 3
asked by jasmine20 
OU Discovering Science Block 6
Im struggling on all of this and I just don't get it the terminologies or anything else would someone allow me to look at their notes that explain the assignment very simply as opposed to all of this technical stuff, just english would be great. My
asked by Jonesy 31 
chemistry
Can someone please help me with these? Write formulas for the following compounds. copper (III) chlorate lead (II) nitrate Cu(ClO3)3 Pb(NO3)2 Do you know the polyatomic ions? Tell us what you don't understand about looking at the periodic table and doing
asked by Florencia 
Biology
What are the functions and compostitions of lipids, carbs, and proteins? http://en.wikipedia.org/wiki/Nutrition
asked by Ufozo 
algebra
How do you do this in your calculator? tan 79=x/150 x= 140 tan 79 Calculators are differnt. Here is my 70 tan x (times key) 150 = And here is a way to let Google do it. Type in the Google search engine 150 tan 79degrees press search thanks
asked by Wilma 
math
i need help with this homework question: it takes 1and1/3 ounces of cocoa to make a cup of hot cocoa. how many cups can be made from 32 ounces of cocoa? You will need to divide 32 by 1 and 1/3. 1 1/3 = 4/3. 32 divided by 4/3 is the same as 32 x 3/4 because
asked by stephanie 
historyfrench revolution
This radical revolutionary was fatally stabbed by another revolutionary. A. Legislatvie Assembly B. Emigres C. Sanculottes D. Leftwing E. Rightwing F. National Assembly G. Olympe de Gouges H. Maximilien Robespierre I. Guillotine K. National Convention
asked by JJ 
History
What did John Lennon fear? http://thinkexist.com/quotation/itsfearoftheunknowntheunknowniswhatit/347275.html
asked by Kate 
PreCalculus
Linear Programming/Systems of Inequalities The photocopying machine in a school office is made available to teachers between the hours of 3pm and 4pm. Mr. Grim and Mrs. Grump each have 10 minutes of copying to do each day. If theyh each enter the office at
asked by Sam 
Strategic
WalMart's strategic direction has been to be the lowest cost provider of merchandise. Do you believe WalMart can be successful in changing its strategic direction to offering more upscale, trendier products at its stores? Why or why not?
asked by zeta 
English
I need to write a short toungue twister. With a word describing me. and then my name followed my adjectives. using the letter B in as many words as posiible. Have any ideans.... im kind . hard working resposible lovingcaring . etc etc. Have any ideas for
asked by Bradley 
math
1/3 of 18 find the part of each number the part of each # is 6 !!!!!!! duh thank you i am i 4th and needed help
asked by maddi 
math
1/3 of 18 find the part of each number
asked by maddi please help asap