Questions Asked on
December 15, 2007

Physicshelp please!
You decide to use your body as a Carnot heat engine. The operating gas is in a tube with one end in your mouth (where the temperature is 37.0 C) and the other end at the surface of your skin, at 30.0 C. What is the maximum efficiency of such a heat engine?
asked by Christina 
Algebra II
In an induction proof of the statement 4+7+10+...+(3n1)=n(3n+5)/2 the first step is to show that the statement is true for some integers n. Note:3(1)+1=1[3(1)+5]/2 is true. Select the steps required to complete the proof. A)Show that the statement is true
asked by Jon 
Physics
The Wall of Death in an amusement park is comprised of a vertical cylinder that can spin around the vertical axis. Riders stand against the wall of the spinning cylinder and the floor falls away leaving the riders held up by friction. The radius of the
asked by Lindsay 
math
If a ball is thrown directly upward with a velocity of 80ft/s, its height (in feet) after t seconds is given by y=80t16t^2. What is the maximum height attained by the ball?
asked by lucy 
spanish
hey i'm having a bit of trouble with spanish. Any help with differentiation the two would be great. hace + period of time + que + present tense AND hacía + period of time + que + imperfect tense. I have my spanish book with me, and it tells me the
asked by Krissy 
Algebra 2
an ice cream store has 31 flavors of ice cream and 10 toppings. A regular sundae has one flavor of ice cream, one topping, and comes with or without whipped cream. How many different ice cream sundaes can be ordered? I'm thinking 310 but how do i figure it
asked by Jon 
Physics
A 4610 kg helicopter accelerated upwards at 2 m/s^2. What lift force is exerted by the air on the propellers? I was given this reply: The air force on the prop blades is what accelerates the helicopter upward. Use good old Newton's second law: F = M a
asked by Einstein 
Physics Questions!
An interference pattern is set up by two point sources of the same frequency, vibrating in phase with one another. A point on the second nodal line is 50.0 cm from one source and 59 cm from the other. The speed of the waves is 35 cm/s. Calculate the
asked by URGENT 
Public Administration
Which of the following is an alternative to the bureaucratic paradigm? A. An organization is defined by the resources it controls B> An organization sticks to routine and focuses on its own needs C. An organization empowers front line employees D. An
asked by Keith 
Calculus
Find the volume of the solid whose base is the region in the xyplane bounded by the given curves and whose crosssections perpendicular to the xaxis are (a) squares, (b) semicircles, and (c) equilateral triangles. for y=x^2, x=0, and y=0 (a) integral
asked by Anonymous 
persuasive paper
when writing a persuasive paper, is it okay to make two points in one paragraph?
asked by Jessica 
WWII  editing
Im writing a diary entry for the events leading up to WWII. Could someone please edit it. I'm not sure if my information is 100% correct. September 12th 1939 Great Britain had declared war on Germany on September 3rd subsequent to Germany’s invasion into
asked by Lena 
Maths
Can some one check this for me..please... The customer wishes to buy a carpet 12.5 sq metres. The cost $C of supply and fitting the carpet has a price of $p per square metre and is given by the formula C= 75 + 12.5P Rearrange this formula to make P the
asked by Zippy 
Physics
Three very small spheres are located along a straight line in space far away from everything else. The first one (with a mass of 2.43 kg) is at a point between the other two, 10.60 cm to the right of the second one (with a mass of 5.17 kg), and 20.70 cm to
asked by Lindsay 
math
Find the domain and range of the function f(x)=x^212x+2
asked by Celia 
algebra
3x+4y=11
asked by BB 
chemistry
the formula for propene reacts with water using potassium permanganate as a catalyst
asked by Renee 
math
Tom is now 25 years older then his son. In 10 years, Tom will me 5 years younger than 3 times his sons age. how old is tome now?
asked by jonathan 
math
there are 50 question in a test. a student gains 2 marks for a correct anwser and loses 1 mark otherwise. if a student has 76 marks, how many question did he answer incorrectly?
asked by jonathan 
math
suppose the graph of f is given . Describe how the graph of the function can be obtained from the graph of f . Y = 4f ( x + 5 ) 3 . How would I work this problem?
asked by 758 
math
how do u find probability?
asked by alli 
Caesar
Hi! I have a packet to do on Caesar and I can't find some of the answers. Does anyone know how Cassius and Brutus are related? Thanks!
asked by Jen 
Film Studies Essay
Hi, I am writing a paper about queer spectatorship in the movie The Wizard of Oz. I have to write a critical analysis five page essay. *I want to know if my thesis statement clearly communicates my argument and its significance, and my method and tools of
asked by Kelley 
algebra
f(x)=x2(squared)7x+10, find (a)f(0), (b) f(5), and (c) f(2)
asked by BB 
math
There are 9 more quarter then dimes.if the total value of the coins is 6.8, how ,any quarters are there?
asked by jonathan 
math
an apple cost 20 cent and a orange cost 25cent. if the total number of apples and oranges is 20 and the total cost is 4.55, how many oranges are there?
asked by jonathan 
Math Analysis
How would I solve: x^4=81
asked by jon 
Physics
A constant net force of 406 N, up, is applied to a stone that weighs 33 N. The upward force is applied through a distance of 2.4 m, and the stone is then released. To what height, from the point of release, will the stone rise? I was given this reply: The
asked by Einstein 
Double Major / Major + Minor in University
What's the difference between double majoring and a major + minor in a program? Do employers look at it? Is it "better" to double major than to major and minor in a program?
asked by Anonymous 
statistics
7) (8 pts) Construct a histogram and a frequency polygon for the following frequency distribution Miles Miles Number of Commuters Class Frequency 0  24 4 25  49 10 50  74 11 75  99 5 100 –124 1
asked by Rose 
science fair project
what would happen if i left a sunflower in a place with only a little bit of sun what would happen would it stretch or just die from the little sunlight
asked by tiffany jasper 
Physics
My last problem for the day: A) The centers of two 11.00 kg spheres are separated by 0.09 m. What is their gravitational attraction? I got 9.96 x 10^7 N. B) What is the ratio of this attraction to the weight of one of the spheres (at the surface of the
asked by Lindsay 
hum 130
Considering that Hinduism lacks a uniting beleif system, what makes up the Hindu religion?
asked by anaya 
Physics
Someone has already posted this question, but their's was never answered, so hopefully someone can answer this. Thanks. An interference pattern is set up by two point sources of the same frequency, vibrating in phase with one another. A point on the second
asked by Needs Physics help desperately 
Calculus
Find the volume of the solid whose base is the region in the xyplane bounded by the given curves and whose crosssections perpendicular to the xaxis are (a) squares, (b) semicircles, and (c) equilater triangles. y=x^2, x=0, x=2, y=0 I know how to graph
asked by Anonymous 
Math
Construct a Truth Table for the given statement: 1. p implies ~(pVq) 2. ~(p AND q)Vp
asked by Joseph 
physics
Three very small spheres are located along a straight line in space far away from everything else. The first one (with a mass of 2.59 kg) is at a point between the other two, 10.50 cm to the right of the second one (with a mass of 5.03 kg), and 20.40 cm to
asked by rory 
geometry
4 sides a polygon?
asked by ceilia 
WWII
The 1st group of Candians that were sent over sea to ritian were sent in December of 1939. Where were they sent in Canada to prepare for WWII?
asked by Lena 
algebra
f(x)=2x5
asked by BB 
Can someone check my answer please
Can someone check this for me? Suppose that the number of cars, C, on 1st Avenue in a city over a period of time t, in months, is graphed on a rectangular coordinate system where time is on the horizontal axis. Suppose that the number of cars driven on 1st
asked by Cupcake 
math analysis
how would I simplify: 3i^4
asked by greg 
Math Analysis
How would I simplify: i^57
asked by jon 
chemistry
Why doesn't the hydrogen produced in the Lithium/water reaction catch fire?
asked by Rebecca 
art
what art movement is william morris associated with
asked by hannah 
sra JMcGin
Como hacer un batido de fresas y kiwis Please help me put in the accents and any changes  we are going ot kinkos in 5 mins thanks 1. Primero, necesitas tener una licuadora, cinco kiwis, seis fresas, jugo de nuranjo, hielo, un cuchillo, y unos vasos. 2.
asked by sam 
spanish
is this correct is there something wrong with spoon Como hacer un batido de fresas y kiwis 1. Primero, necesitas tener una licuadora, cinco kiwis, seis fresas, jugo de nuranjo, hielo, un cuchillo, y unos vasos. 2. Después corta las fresas 3. Ahora corta
asked by sam 
Pigskin Geography
Who knows numbers 15 on week 15?
asked by Aleysha Keys 
Public Administration
I believe I have the correct answer for this one, but just want to make sure. According to theories of French and Raven, Martin Luther King Jr exemplified which style of power in his leadership of the civil rights movement? A. Referent power B. Coercive
asked by Keith 
Math Truth Tables
Construct a Truth Table for the given statement: 1. p implies ~(pVq) 2. ~(p AND q)Vp I thought this is how to do it, but my teacher marked it incorrect: 1. p q ~(pVq) p implies ~(pVq) T T F T implies T= T T F F T implies F= F F T F F implies F= T F F T F
asked by Joseph 
algebra 2
Evaluate the expression (40/2+i) + (35/2i). What steps do I take in order to find this answer?
asked by Louie 
ged math
Using estimating.$195 of erin's $1190 monthly check goes for a car payment. What percent of Erin's check is used for this payment?
asked by toya 
WWII
When Hitler violated tha agreements of the Munich Agreement, what was he aiming for? What was he planning on gaining when he violated those terms?
asked by Lena 
english
Can someone explain to me the different appeals used in writing (ethos, pathos, and logos)?
asked by Kim 
not exactly schoolrelated
What are some safe kids web search engines?
asked by Anonymous 
Math
Construct a Truth Table for the given statement: 1. p implies ~(pVq) 2. ~(p AND q)Vp I thought this is how to do it, but my teacher marked it incorrect: 1. p q ~(pVq) p implies ~(pVq) T T F T implies T= T T F F T implies F= F F T F F implies F= T F F T F
asked by Joseph 
WWII
I know that there is not just one answer for this question but in your personal view, what did most countires plan to acheive after WWII? What was the main goal?
asked by Lena 
persuasive paper (again)
I'm having trouble with an introduction. What is the correct way to write an intro and good ways for a leading sentance? please and thanks
asked by jessica 
math
is 2/3 closer to 0.67 or 0.667?explain
asked by lucely 
geometry
a star, is it a polygon? if it is name it by the num,ber of sides... 10 sides i beilieve?
asked by ceilia 
Composition
What will be the best way to start an introduction paragraph when writing a comparison paper, such as comparing adults to adolescents without comparing their age differences.
asked by Rd 
science
what speeds up chemical reactions in a cell
asked by spanky 
Composition
Would it be appropriate to start an introductory comparison paragraph with THE MAJOR DIFFERENCES WITH SINGLE PARENTS AND MARRIED COUPLES IN PARENTING ARE .........
asked by Rd 
Composition
I can not think of any major differences between adults and adolescents. Could I get any suggestions on starting a paper on some differences?
asked by Rd 
statistics
3) (2 pts) Half of the numbers in any data set will be larger than the A) mean B) mode C) median D) midrange
asked by Rose 
algebra
Is this right if I substitute 2 for x? f(x)=x^27x=10 f(2)=2^27(2)+10 f)2)=4(14)+10 f(2)=8
asked by BB 
Chemistry
What effect does diluting the sodium hydroxide have on the basicity of the solution?
asked by Dick Rogers 
Chemistry
Can someone check these answers for me THANK YOU! 1) Which of the following combinations would most increase the solubility of a gas in a liquid? is it increase the pressure and increase the temperature 2) The concepts of molarity and molality are like in
asked by anonymous 
Math Analysis
Which is equivalent to 6i/2i
asked by jon 
Math Analysis
Which is equivalent to 5+i/1+3i
asked by jon 
Math Analysis
How would I solve: x1/x+2 is greater than or equal to x/x2
asked by jon 
Math Analysis
How do I solve: 4x^3 is less than x
asked by jon 
Math Analysis
When simplifing 1/a3  1/3a do I procede by multi. by the recipercal or would I just set them equal to each other.
asked by Greg 
PLEASE READ
ATTENTION TEACHERS AND HELPERS I Am THE REAL Jon I'm not changing my name to greg,jonathan or anything else whenever you see Jon,not jon its me I always give my best answer. I don't just ask questions waiting for someone to give me the answer. Thanks and
asked by Jon 
statistics
11. (4 pts) The following statistics provide information about the scores on a national mathematics exam. Mean 312 First Quartile 201 Median 296 Third Quartile 423 Mode 326 49th Percentile 307 a) What score did half of the test takers surpass? b) What was
asked by Rose 
sra McGuin HELP PLEASE
Como hacer un batido de fresas y kiwis 1. Primero, necesitas tener una licuadora, cinco kiwis, seis fresas, jugo de nuranjo, hielo, un cuchillo, y unos vasos. 2. Despues, corta las fresas 3. Ahora corta en rodajas los kiwis en el medio y saca afuera los
asked by sam 
spanish sra Mcguin
where do i put in distribuye thanks
asked by sam 
sra mcgin
are you on the site this morning sam
asked by sam 
is this correct spanish
Finalmente, les distribuye los vasos a los invitados. is this correct now???
asked by sam 
sci 275
propose a hypothesis to explain how limbless salamanders evoled according to Darwin's theory of natural selection
asked by anaya 
hum 130
What are the cultural and societal influences that have made Hinduism vital to the region in which it orginated?
asked by anaya 
hum 130
Explain the desire for liberation from earthly existence.
asked by anaya 
sra JMcGin spanish
is this good? this is my final copy Como hacer un batido de fresas y kiwis 1. Primero, necesitas tener una licuadora, cinco kiwis, seis fresas, jugo de naranja, hielo, un cuchillo, cuchara y unos vasos. 2. Después corta las fresas 3. Ahora corta en
asked by sam 
Public Administration
Hi, I would like some assistance with this question. I am stuck between answers C and D. Both appear correct to me. D because I know Strategic Management is about attaining ALL of your objectives Strategic Management is about A. Attaining part of your
asked by Keith 
Math Truth Tables
Construct a Truth Table for the given statement: 1. p implies ~(pVq) 2. ~(p AND q)Vp I thought this is how to do it, but my teacher marked it incorrect: 1. p q ~(pVq) p implies ~(pVq) T T F T implies T= T T F F T implies F= F F T F F implies F= T F F T F
asked by Joseph