Questions Asked on
December 12, 2006

calc
d/dx integral from o to x of function cos(2*pi*x) du is first i do the integral and i find the derivative right. by the fundamental theorem of calculus, if there is an integral from o to x, don't i just plug the x in the function. the integral of the
asked by david 
chemistry
0.872g sample containing only NaBr and KBr gives 1.052g AgBr. what's the % of each salt? This is the type of problem that cannot be answered without other information. I think you have made a typo in your problem I worked through it and I get negative
asked by hayat 
oceanography
1. How much of the total water at earth's surface is fresh water? 2. Of all the freshwater at the earth's surface, what percent is found as ice and glaciers? 3. What percent of all freshwater is groundwater? 4. What percent of the rainfall that falls on
asked by Ashley 
Science
What is an example of: a) radiation b) conduction c) convection radiation: the heat of the sun. conduction: heat one end of a metal tube and the other end will become hot due to conduction. convection: hot air rises in a room and cold air moves from high
asked by Caley 
probability
Kevin has 11 CDs in his glove compartment. Six are rock and 5 are rap. He selects 3 cds at random. What is the probability that he picks at least 2 rap cds? Pr (two)=5/11 * 4/10 * 6/9 Pr (three ) =5/11 * 4/10 * 3/9 add those. Not quite bobpursley. There
asked by matt 
science
what causes the northern and southern lights to occur yyftyrf da ert faerb uoi gfa he tue you da dietions da en
asked by kizzy 
physics
a) 2.0 kg of molten copper at its melting point of 1083 ºC (the copper is 100% liquid) is poured into a mold in a cooling water bath at 20 ºC. What mass of water is needed to bring the solidified copper and water to an equilibrium temperature of 30 ºC,
asked by Eric 
Experiment+ bio
In the 1950s the heavy isotope of nitrogen (15N) and an ultracentrifuge were used in an experiment to investigate the manner in which DNA replicates. Bacteria were grown in a culture containing 15N nucleotides for several generations to ensure that only
asked by Chalrey 
government banking industry
What happened when the government deregulated the banking industry? Since this is not my area of expertise, I searched Google under the key words "bank deregulation" to get these possible sources: (Broken Link Removed)
asked by Anonymous 
Probability
A contest entrant has a .00001 probability of winning $5,000.00. If this is only prize and the entry fee is $20.00, then what is the expected value? Regardless of what you pay for an entry "ticket" its expected value is in this case (probability of
asked by Sue 
math, drbob222
For this problem is it only asking for the exprssion(formula). Or do they want me to solve it. (1) A triangle has sides 3x+7,4x9,and 5x+6. Find the expression that represents its perimeter. My answer:P=a+b+c I think the question is asking for the
asked by Jasmine20 
pathophysiology
What is the Thyroid gland? Where is it and what does it do? Please visit: http://en.wikipedia.org/wiki/Thyroid
asked by blondie 
possessive nouns
Write the noun in this sentence so it shows possession. The bus driver is named Mr. Ed. Would it be? The bus's driver is named Mr. Ed. I personally think the sentence should be rewritten to read, The bus driver's name is Mr. Ed The second sentence is
asked by Lulu 
CHEM
thank you VERY much for your replies, DrBob. Another question, however: How many moles of ions both cations and anions are present in solution when 0.75 mol of potassium chloride is dissolved in 0.25L of distilled water? How do I work this answer to be:
asked by K 
government please respond ASAP
What is the numberone expenditure for the federal government? http://www.warresisters.org/piechart.htm The single biggest line item is interest on the national debt. The single largest program/function is social security, the largest discretionary
asked by Anonymous 
PHYSICS
HOW DO YOU FIND THE VELOCITY OF A 20 kg SOLID CYLINDER WITH A .25 m RADIUS WHEN IT IS RELEASED FROM THE TOP OF A 10 m LONG RAMP INCLINED AT 30 DEGREES? The potential energy at the top is mg10/sin30 The Ke at the bottom is 1/2 mv^2, plus 1/2 Iw^2 but w= v/r
asked by NICOLE 
Global
After crossing the HinduKush mountains, Aryan 'invaders' moved? A. Through the indus river valley and onto the ganges plain B. northwest to the black sea c. Across the Alps mountains into rome D. east to the south china sea First you need a good map of
asked by Danielle 
banks
Describe how banks help to eliminate money. What kind of money are you talking about? Taking paper money out of circulation? Banks actually create money when they issue checking accounts for people and busineses they grant loans to. They also put a lot of
asked by Anonymous 
Necklaces
Is there a big difference between 10k and 14k gold chains? My husband wants a chain he can wear all the time. Should I get 10k or 14k? http://www.24carat.co.uk/whyeighteencaratgoldisbetter.html http://en.wikipedia.org/wiki/Carat_(purity) Thank you for
asked by Sharon 
Need help Reviewing Managerial Economics
just need help in reviewing my answers...they are all true/false questions..THANKS!!! 1. A principalagent problem occurs when managerial decisions are inconsistent with the firm’s revenue maximizing objective. False 2. A firm making less than a normal
asked by Sarah 
math, algebra
Problem: A formula for a football player's rushing average r with a total of y yards rushed in n carries of the ball is r=y/n. Solve for n. I have no other information this is how its in the book how do i even solve for n if theres no numbers. You don't
asked by jasmine20 
physical science
need help unscrambling these words sperruse ster nertlaim pressure http://www.ssynth.co.uk/~gay/anagram.html rest what is a gspot Pressure Rest
asked by nancy 
science
Look at the picture on the immediate left here: http://en.wikipedia.org/wiki/Earth's_magnetic_field Also: http://image.gsfc.nasa.gov/poetry/magnetism/magnetism.html HOW IS THE EARTH'S MAGTISM USEFUL thanks it helped me alot!!!!!!!!!!!
asked by Lance 
Philosophy
For the following arguments, a) Translate into standard form (if not already in standard form), b) symbolize to simplify, and then c) determine whether the syllogisms are valid or invalid, explaining why by reference to rules, AND by showing the
asked by Anne 
Philosophy
a) Using long or short truth tables (symbolize as necessary and show tables) determine and state whether the following arguments are valid, briefly explaining your table; and b) if valid, demonstrate validity by deductions using Group I rules. Arg 1. P>Q
asked by Anne 
money
What are the two characteristics that dollars must have to be accepted as money in our society? I think its the spider and the line along the side I'm not sure but i think that the line along the side is one of them.I had that question before but i can't
asked by Anonymous 
english
Jim sucked and sucked at the jug, and now and then he got out of his head and pitched around and yelled; but every time he come to himself he went to sucking at the jug again. His foot swelled up pretty big, and so did his leg; but judged he was all right;
asked by anonymous 
Trig.
I have answers for these problems, but I wanted to check if I had them right because I wasn't sure on some of them....Thanks. Solve the triangle: 1. a=4, b=8, alpha=30 deg. answer beta=90 deg., gamma=60 deg., c=7 2. a=5, b=7, alpha=30 deg. answer beta=44
asked by ashley 
science
you need to make a 3.5 Molar solution of Ca(OH)2, however, you only want to make 50ml of this Ca(OH)2 solution. How many grams of Ca(OH)2 will you need to weigh out and add to 50ml of water? Mass=VolumeinLiters*Molarity*Molmass
asked by brittany 
weighted average?
if you have 70 calls that come in during one minute and 3 seconds..and then you have 10 calls come in at a total of 15 seconds. what is the weighted average of calls and time? I assume you want the weighted average of the frequency of receiving calls. The
asked by Cherilyn 
Standard Costing System
Ballroom Balloons, Inc. uses a standard cost system in which manufacturing overhead is applied to units of product on the basis of direct laborhours (DLHs). During August, the company actually used 6,100 direct laborhours and produced 2,500 units of
asked by Lese 
algebra,math
can someone correct these. and help me DIrections:Factor (3) 4x^24x15 My solving: 4*x*x4*x15 (the star means multiply my final answer: x^315 (the ^ means for exponent) (4) 5x^226x+5 my solving: 5*x*x26*x+5 my final answer: x^316 I don't understand
asked by jasmine20 
pysics
since mass and radius don't matter. Shouldnt the final velocities of a cylinder and a sphere at the bottom of the ramp be the same? No. You have to consider where the mass is. Calculate moment of inertia. See the problem you asked below. items dropped at
asked by NICOLE 
Math
What is a unit rate? what is the prime factorazation for 945? idk how to do this 10= 15= GCF= i need help with my prime factorization homework what is a prime factorazation i meed held on my homework how do u determine if the numbers are prime or composite
asked by Lindsey 
Science
Electrical energy can come rom 3 types of energy: __________, __________, and __________. heat, nuclear, solar energy (sunlight)_ Thankz! :)
asked by Caley 
Science
Fill in the blanks: To make electricity: Coal heats water> heat makes ______> turbines turn steam
asked by Caley 
physics
7150/(33.5e4) = g ice doesn't work. Am I calculating incorrectly? heat of fusion for water is 334 J/g. You want it in J/g since q is given in the problem in J. The answer will be in units of grams of ice. You will need to change to kg since the problem
asked by Ann 
geometry proofs
i need help with inderect proofs and proving lines perpendicular.. PLEASE!!!! You have to be much more specific on your question.
asked by Angel Metellus 
math
dana has fillings in 4 of 32 teeth. What percent of her teeth have fillings? 4 divided by 32, then multpity by 100 to get the percent.
asked by gaby3434 
History
Why is Emily Murphy a hero? 3 things. I need it for tonight if you could please help me out. =) In 1911, Murphy successfully persuaded the Alberta legislature to pass the Dower Act that would allow a woman legal rights to one third of her husbandfs
asked by Help! 
confused calc
dy/dx=2y^2 and if y=1 when x=1, then when x=2, y=? (you already posted this, but i still don't get it) dy/dx = 2y^2 Integrating...y=2/3 y^3 + C put 1,1 into the equation, and solve for C c=1/3 so the equation is y=(2y^3)/31/3 then i have to find what y
asked by david 
math,algebra
Directions:Multiply (1/2)(3/8) mY ANSWER : .1875 Now how do i turn this into a fraction. numerator multiplied: 3 denominator multiplied 16 3/16 How do you get to that answer because not every single one would be multiplied by the numerator 3. Can you
asked by jasmine20 
English 10th Literature
What is the climax of "The Bass, the River, and Sheila Mant?" I always call it "the point of no return". The time in the story when there can be no other possible ending. Below is a site which will explain
asked by Tadeshia 
need math help asap (logs) !!!
Create a question that will use all four Log Operations and four Basic Log properties. The four log properties are: Logb 1=0; logbB=1; logbB^x=x; b^logbx=x the final answer must be X=e^pi where e is the natural log base = 2.718 be creative. Start with ln x
asked by hi 
Trig. Law of Cosines
Show that any triangle with standard labeling... a^2+b^2+c^2/2abc = cos(alpha)/a + cos(beta)/b + cos(gamma)/c I don't get it. Can someone please help me. Start here with the law of cosines: a^2 = b^2 + c^2 2bc Cos A b^2 = a^2 + c^2 2ac Cos B c^2 = a^2 +
asked by ashley 
science
For the reproduction of yeast which sugar is best,regular suger,splenda,equal or sweet and low?give the reason why it is best.why do splenda don't produce carbon dioxide during yeast fermentation? splenda, equal, are not sugars that yeast can digest.
asked by munira 
Science
Can you describe forced convection? Please? It is a fan blowing a fluid across a heat source or heat sink. Thankz!! :P
asked by Caley 
Science
These questions are multiple choice to fill in the blank: When cooking something in an oven: 1. a glass pan is an example of heat _________. a)radiation b)conduction c)convection 2. a metal pan is an example of heat _________. a)radiation b)conduction
asked by Caley 
Science (sorry it's the same question twice)
Fill in the blanks: To make electricity: Coal heats water > heat makes _______ > turbines turn I hope this version makes more sense that the previous one. :P steam
asked by Caley 
in washington
by 2004 NASA wants to have a moon base that would be a base for trips to what planet Go to http://www.google.com and enter nasa moon base  see what results you get. If you don't get what you want, alter the search words a bit. =)
asked by mak 
science
Try MgBr2 and I expect you can balance it. i got a balancing equation problem i gotta get this to balance Mg(OH)2+ HBr > MgBr + H20 so far i'v gotten it down to 2Mg(OH)2+ 4HBr > 2MgBr + 4H20 but it's still not balanced,so can someone please balance
asked by DrBob222 
Math
If 450 kilowatts of electric used cost 25.32, then how much would 240 kilowatts of electric cost? first find how much one kilowatt costs. so divide 450 kilowatts/$25.32 and you get your answer. then take that answer and multiply to get the cost of 240
asked by Brodey 
math, algebra
can someone correct this for me or help me. 6x^2y^3+ 9x^2y^3 divided by 3x^2y^2 my solving and answer is: 15 x x y y y  = 5y 3 x x y y Looks good to me. I've never thought of showing x^2y^3 as xxyyy. That a neat wrinkle. We see quickly that the
asked by jasmine20 
drbob222,math
I've written back for the one i'm having trouble with of the previous in the previous message. Another question is that I want to verify doesn't this problem refer to solving. It is estimated that the Earth is losing 4000 species of plants and animals
asked by Jasmine20 
english
PLEASE help Me unscramble 1) CTVNOAAI 2) SRETPENS 3) EMGNAR 4) UISUERNOOLST 5)ESNECNIKNARF Try these: http://www.ssynth.co.uk/~gay/anagram.html http://www.unscramble.net =) CTVNOAAi
asked by Lani 
science
For the reproduction of yeast which type of suger is best,regular suger ,sweet and low,splenda or equal? regular sugar
asked by munira 
intro. to business/ government
Do you agree with the federal government's spending priorities? Explain your answer. ^^^ what are the federal government's spending priorities? http://www.warresisters.org/piechart.htm
asked by Anonymous 
Religions,History
what are two excellent university websites that that deal with indigenous cultures and/or religions. Information ought to be judged by its content, not the publisher. In my experience on the web, university websites offer politically correct information,
asked by Kalinjasmsis 
the federal reserve
How does the Federeal Reserve control the amount of money in circulation? By (1) setting the short term interest rate that banks must pay from loans from the Federal reserve and (2) setting the "reserve requirement" that banks must leave on deposit with
asked by Anonymous 
science
what are the benfits and drawbacks of using insect hormones as a means of pest control? The benefits is that they can target specific bugs...maybe. The attractant hormones used to trap flies, cotton weevils, and the like, so they can be removed from the
asked by jessica 
#6, week 15
what peninsula do the Wolverines go past to get to Green Bay? Thank you for using the Jiskha Homework Help Forum. The Wolverines are from Michigan and the Green Bay Packers from Wisconsin. Get a good map and look between Michigan and Wisconsin. A peninsula
asked by rob 
Moss+
http://en.wikipedia.org/wiki/Alternation_of_generations why does life cycle of moss involve alternation of generation?
asked by Lance 
bio!
how does the process of crossing over results in genetic variability in an organism due to meiotic cell division? crossing over is when the homologous chromosomes pair up on the metaphase plate during meiosis 1, the homologous chromosomes swap short bits
asked by help! 
Chemistry
I believe the question asked to me in class was something like how do you derive the van't hoff factor to find that ln(K2/K1) = (delta)Hº/R[(1/T2)(1/T1)] nevermind i found the solution. thanks anyways
asked by JYD 
math, algebra
How do you solve the following: Directions:Factor Can you show me!!! (1) x^2x12 (2)x^3+2x^23x Here is how I do it. First make two sets of parentheses. ( )( ) The first in each set of parentheses must give x2. Obviously that is x and x. Looks like this.
asked by jasmine20 
Health
How many people on average die each year from smoking related problems in Ontario?
asked by Caley 
science
what are some good websites for positive and negative impacts of electromagnetic induction? What kind of electromagnetic induction: like high voltage powerline problems?
asked by lilly 
Health
How much does smoking cost taxpayers because of health care?
asked by Caley 
Math
How do you know whether a system of equations has no solution, one solution, ormany solutions? How can you identify whether a system is consistent or inconsistent???? Please Help me!!!! Thanks so much! I believe it is consistant if there is onlii one
asked by Helen 
science
how is the earth's magnetism useful It provides a navigation mark for hikers and sailors.
asked by kizzy 
Science
Nuclear power is from ___________. What word(s) goes in the blank? The bonding energy in the atomic nucleus. Thanks! :) caley you have to be looking at this please talk to me
asked by Caley 
Science
Oil comes from __________ that is pumped up from under the ground. What word(s) goes in the blank? resevoirs? pools? a number of words can go here.
asked by Caley 
tis the season
starting on christmas eve tbs will air 24 hours of what classic christmas movie aout ralphie parker Just go to www.tbs.com and click on Schedule  then choose Dec 24 and voila! http://www.tbs.com/schedule/0,,21122406,00.html =)
asked by mak 
U.S
a propane explosion flattened an industrial warehouse in wisconsin's biggest city name the city You choose: http://www.google.com/search?q=propane+explosion+wi&rls=com.microsoft:enus:IESearchBox&ie=UTF8&oe=UTF8&sourceid=ie7 =)
asked by mak 
Math
In sequences and series::: I don't understand the difference between (for arthemtic series) the equations 1) sn= t/2(titn) 2) (n* n1)/2 where would you use each one and how are they different?
asked by mary11 
Spanish
Could someone proof my essay about enny in two stories? thanks! La Envidia
asked by Susanna 
Philosophy
Give an example of a truthfunctional syllogism.
asked by Anne 
Philosophy
Use the diagramming method for identifying the argument structure of the following: "The Democrats tend to be to the left on social policy, and the new Congress is controlled by the Democrats, so we can expect a swing to the left. Of course, there are
asked by Anne 
Philosophy
Describe commonly accepted criteria for establishing the credibility of premises (claims).
asked by Anne 
English
" to record an individual's health care and the achievements of medical source" How do I cite the source In this particular quote. You just quote it into the paper, and write the author name and page in parenthesis at the end of the sentence. Try
asked by haydee 
drbob222
Can you check this one for me i want to make sure. The simple interest I on a principal of P dollars at Interest rate r for time t, in years, is given by I=PrT.Find the simple interest on aprincipal of $6000 at 3% for 2years. I got the following: I= 6000 x
asked by jasmine20 
Human Biology
How can you identify a desert animal from an aquatic one by looking at the kidneys. I meant to put a question at the end. Morphological study of the desert heteromyid kidney with emphasis on the genus Perognathus. * Altschuler EM, * Nagle RB, * Braun EJ, *
asked by Owen