Tuesday

March 3, 2015

March 3, 2015

Total # Posts: 177

**chemistry **

Two moles of an ideal gas initially at 27C and 1 atm pressure are compressed isothermally and reversibly till the final pressure of the gas is 10 atm. Calculate the work done. (R=8.314 JK-1mol-1)
*February 21, 2015*

**science**

A girl drops a stone into a mine shaft 122.5m deep. How soon after she drops it does she here the sound of it striking the bottom of the shaft?
*February 16, 2015*

**MATHS**

5 p.c.p.a
*January 10, 2015*

**math 221n**

A shipment of 40 television sets contains 3 defective units. How many ways can a vending company can buy five of these units and receive no defective units?
*August 27, 2014*

**chemistry **

1) 1.12 dm3 of a gas at STP is found to weigh 3.55g.Find molecular weight and vapour density of gas 2)5.6 dm3 of a gas at STP weighs 11g Find out its relative molecular mass & vapour density
*August 15, 2014*

**Physics**

WHAT DOES A DISPLACEMENT-TIME BALLON TYPE GRAPH REPRESENTS?
*June 11, 2014*

**statistic**

A survey of households in a small town showed that in 500 of 1,200 sampled households, at least one member attended a town meeting during the year. Using the 95% level of confidence, what is the confidence interval for the proportion of households represented at a town meeting?
*May 21, 2014*

**Astronomy**

2.089*10^28
*April 25, 2014*

**chemistry**

if .5 mole of baCl2 is mixed with .2 mole of Na3Po4.Then maximum number of mole of Ba3(PO4)2 is
*March 29, 2014*

**maths**

the difference b/w a 3 digit number and the number formed by reversing its digits is 396,the difference of hundreds and the units digit,is one less than the sum of the units and tens digit .find the number
*July 1, 2013*

**maths**

there are 7 children standing in a line ,not all of whom have the same number of cakes with them, if the first child distributes his cakes to the remaining six children such that he doubles their respective no.of cakes ,then he will be left with four cakes. instead ,if the ...
*July 1, 2013*

**Maths**

A two digit number is formed by either substracting 17 from nine times the sum of the digits or by adding 21 to 13 times the difference of the digits .find the number
*June 29, 2013*

**math**

there are balls of colors red, blue and green. 65 students of a class like exactly one color, 10 students like no color, 40 students like exactly 2 colors and 15 students like all the 3 colors 1. how many students are there in the class. 2.how many students like atleast 2 colors.
*June 19, 2013*

**mec 112**

A 10kg trunk lies on a horizontal rough floor,the coefficient of friction between the trunk and the floor is 0.75. Calculate magnitude of force P which is necessary to pull the trunk horizontally if the P is applied horizontally and at 30 degrees above the horizontal.
*January 12, 2013*

**St josephs**

Machine set up is correct 60% of time & is incorrect 40% of time, 10 % of parts produced are defective when set up is correct, & 60 % would be defective if set up is incorrect. Find the probability that part is defective even though machine was set up correctly
*December 3, 2012*

**Engineering maintenance**

an undamped mass spring system is with mass of 12kg and stiffness of 15N/mm,a)determine the natural frequency and the period of the free motion of the system b)determine the amplitude of displacement A and the phse shift for the initial conditions x0=2mm,v0=-1mm/s
*October 29, 2012*

**ela**

why you argee? this statement. about univesity kids: the top 20 percent are great. they re smart and self directed and they'll anywhere. then there are the rest. they dont know much. I need to write some lines why i agree please give some ideas to start and how to end.
*September 6, 2012*

**math**

a) 3x(3x-1) b) (2x-3)(2x+3)
*September 1, 2012*

**math**

plug in 1 for n for the first term. plug in 2 for second term and so aon until the sixth term ex:(-3)n (-3)1=-3 (-3)2= -6 etc... :P
*September 1, 2012*

**math**

plug in the value for x and solve 3(2)-10 6-10 =-4 capish?
*September 1, 2012*

**math**

Draw graph of y= x^(1/2) to help you understand solution. Rotation about y-axis means that the radius of the solid (length being swung around the axis is the x-value). it helps to solve for x-value rather than try to substitute everything. x=y^2 where y>0 each disk or x-...
*September 1, 2012*

**math**

Graph it if you don't understand my solution: Linear equations follow the format y=mx+b where m is the slope and b is the y-intercept. let y= fees and x=number of credits now calculate slope (change in y/change in x) m=(2600-2000)/(6-3)= 200 y=200x+b Plug in any point to ...
*September 1, 2012*

**math**

a) illogical nonidentity because 4 does not equal 5 b) testable statement. i don't know your definition of logical statement and can't be of much more help here 3) false obviously d) logical statement due to commutative prop of addition
*September 1, 2012*

**mat**

for the first one I assume they want you to factor out ¡ñ 30 and add 801+4 for the second, I assume they want you to first factor out ¡ñ 20 then do the combination--not 100% sure.
*September 1, 2012*

**math**

it is the length of the circle's perimeter the formula for cicumference is 2 pi r. pi is a contstant that goes on forever (3.1425....) and r is the length of the radius
*September 1, 2012*

**math**

Bring constant to other side: y-81=9x^2+72x Make constant in front of x^2 term one: (y-81)/9=x^2+8x (y/9)-9=x^2+8x complete the square...(x+a)^2= x^2+2abx+a^2. x^2=x^2 so 8x=2ax= so a=4 4^2=a^2=16 The equation you want to create is (x+4)^2= x^2+8x+16 previously we had (y/9)-9=...
*September 1, 2012*

**Math**

lim (x->0) x^4 cos 2/x= =lim (x->0) x^4 * lim (x>0) cos 2/x = 0 * lim (x>0) cos 2/x cos (a) will always be between -1 and 1. but this is irrelevant since x^4 is 0 at x=0, and anything multiplied by 0 is 0 :P
*September 1, 2012*

**math**

x intercepts...think of the graph. the line crosses the x-axis when y=0. so set y=0 0=(3x+2)(x+2) 0=(x+2) or 0=(3x+2) Solve to get -2 and -2/3 As for axis of symmetry and vertex...you can use vertex form or remember that (-b/2a) in ax^2 +bx+c will give you the x-coordinate of ...
*September 1, 2012*

**college math**

find the derivative: f'= 15x^14 this function is always positive (graph if you don't believe me) because any number to an even power must be 0 or greater. thus since the derivative is always positive, the graph of f (x) is always increasing :P
*September 1, 2012*

**math**

This equation is derived from the following: at maximum height the velocity is zero. y(current height)= y0 (initial height)+v0t+.5at^2 take the derivative 32t-v0=0 so vo=32t Plug this in for the v0 value 16t2 − (32t)t + h = 0 h=49ft -16t^2+49=0 Solve for t: 16t^2=49 4t=7...
*September 1, 2012*

**statistics**

no. of 10 resturants surveyed in city of lucknow and found that average food wastage per day is 35 kg with variance as 3 kg . is it reasonable to assume that the daily mean wastage of food in a resturant is 38 kg ? test @5% significance level.
*May 14, 2012*

**statistics**

a random sample of 100 students from the current years batch gives the mean IQ level of 110 and variance of 5 can we say that this is same as the IQ of the previous batch which was 116.
*May 14, 2012*

**geometry**

quadrialteral abcd is aparallelogram.If the measure of angle A is 62 degrees, measure of ADB is 75 degrees, what is the measure of angle ADC in degrees
*January 12, 2012*

**American Government**

Please explain what conditions cause new democracies to survive and thrive or to fail ?
*November 28, 2011*

**Fitness and Safety**

Are these right ? 7. Which major muscles are used in your arm when you pick up a bowling ball and throw it down a bowling lane? Name 4. 1. Pectoralis 2. Trapezius 3. Deltoid muscle 4. Triceps 8. Which muscles in the legs are used to do a jumping jack (where you jump quickly ...
*November 28, 2011*

**Fitness and Safety**

5. Is it true that when you lift weights your muscles get bigger from more muscle cells?
*November 28, 2011*

**Fitness and Safety**

Ok, but thanks for the link.
*November 28, 2011*

**Fitness and Safety**

3. How does it benefit your muscles to do different types of strength training activities? 4. What are some of the challenges or disadvantages of using weight machines? 5. What's the difference between dumbbells and barbells?
*November 28, 2011*

**chemistry DONT spik **

a sample of carbon dioxide gas has a mass of 52.0g. how many oxygen atoms arr present?explain please don't skip
*October 2, 2011*

**chemistry**

a sample of carbon dioxide gas has a mass of 52.0g. how many oxygen atoms arr present?explain
*October 2, 2011*

**chemistry**

caculate the mass of agcl precipitated when 0.1g of nacl and 0.1g of agno3 are mixed in solution
*July 16, 2011*

**science**

an aluminium container of mass 100g contains 200 g of ice at -20'c heat is added to the system at the rate of 100 cal/sec. what will be the final tmperature of the mixture after 4 min? given:specific heat of ice:0.5 cal/gm'c ,latent heat of fusion:80 cal/gm and ...
*March 17, 2011*

**calculus**

A right triangle of hypotenuse L is rotated about one of its legs to generate a right circular cone find the largest volume that such a cone could occupy
*January 7, 2011*

**calculus**

A. a particle moves around the circle x^2+y^2 = 1 in such a way that the x coord rate of change is dx/dy= y B) IS THE PARTICLE MOVING COLCIKWISER OR COUNTERCLOCKWISE AROUND THE CIRCLE C) FROM THE RT TRIANGLE ONE CAN SEE THAT SIN(THETA) = Y AND COS(THETA) = X USE THESE ...
*January 7, 2011*

**calculus**

right circular cylindrical tin cans are to be manufactured to contain 400 cm ^3 of volume. There is no waste involved in cutting the tin that goes into the vertical sides of the can, but each end piece is to be cut from a square and the corners of the square wasted. Find the ...
*January 7, 2011*

**calculus**

A right triangle of hypotenuse L is rotated about one of its legs to generate a right circular cone find the largest volume that such a cone could occupy
*January 7, 2011*

**ela **

can you give me an example of classical allusions please but from romeo and juliet
*November 30, 2010*

**math**

2 trees are 80 m apart . from a point halfway between the trees, angles of elevvation of the tops of the trees are measured. what is the height of each tree to the nearest metre
*November 15, 2010*

**ela**

i have to draw globe thetre but i have no idea how to draw. they give me some describsion:the stage was 4-5 feet high,surrounded by railing,. the celing above the stage, supported by two colums,was painted with the sun,moon,stars and zodiac sign and more like balcony ........
*November 4, 2010*

**day care**

industry vs inferiority
*November 3, 2010*

**day care**

samuel is beginning to realize that he has a talent for art and he feel good about it which of erikson 's stages may he have reached
*November 3, 2010*

**pre algerbra**

33xsquare-11plus10
*October 28, 2010*

**English**

satirical quotes from midnight's children and The God of Small Things
*October 26, 2010*

**English**

Satirical quotes from midnight's children and The God of Small Things
*October 26, 2010*

**English**

Comparison of the Satirical quality in the novels of Rushdie and Roy
*October 26, 2010*

**geo**

can u give me some points on against mosquito fogging because i am in green party i have this points: negative impact on environent human issue but i need two more points to discuss
*October 14, 2010*

**Teachers Aide/Early Childhood Education and After-**

Ms sue thanks 4 giving me the wrong answers on 2. (A) 11. (A) 14. (B now i've got low grade because i trusted ur answers thanks alot :(
*September 28, 2010*

**An Overview of Teaching Techniques**

thankyou this was relle helpfull i got a 100%
*September 15, 2010*

**chemistry**

0.01062M
*June 21, 2010*

**s.s (the middle ages) Grade 7**

what's for vassal i didn't got that one plaese helpme
*June 3, 2010*

**s.s (the middle ages) Grade 7**

i have 10 words and 11 definations for them. i have only left 3 words and 4 definations and tommorow i have a test please help me! Words: manor, pilgrim and vassal definations: a) a persone who travels to a holy b) lesser nobles c) faithfulness d)an estate owned by a noble ...
*June 3, 2010*

**NOT anwered again**

atleast tell me that you dont kmow
*May 26, 2010*

**science **

i know what 4 fates of the star are black dwarf supernova neutron star black holes but i dont know how they end up ( die)
*May 26, 2010*

**WHY SKIPED MY QUESTION??????????????**

PLEASE I NEED TO FINISH BY TODAY
*May 26, 2010*

**science**

descibe and explain 4 fates of a star ( after they die)? this is my 2nd last question to finish my worksheet and it is for marks please help me thanks
*May 26, 2010*

**s.s project**

my is elderly people things to start a presentation goes like this ............. 'cities needs to provide services to all residents but espially to eldery people' because there population increases in future! city need 55 plus buildings to live and pavllion. they ...
*May 18, 2010*

**project**

my is elderly people things to start a presentation goes like this ............. 'cities needs to provide services to all residents but espially to eldery people' because there population increases in future! city need 55 plus buildings to live and pavllion. they ...
*May 18, 2010*

**city project**

my is elderly people things to start a presentation goes like this ............. 'cities needs to provide services to all residents but espially to eldery people' because there population increases in future! city need 55 plus buildings to live and pavllion. they ...
*May 18, 2010*

**geography**

give what to on myt poster please help me
*May 13, 2010*

**geography**

elderly on my poster can i put like this... facilities: - Health care[hospitals] - recreation[clubs,parties,bingo] -home care -transportation -55 pluss including services -funeral services -elavators\hrdralic chair lift -basic services -food -handicap parking -discounts -...
*May 13, 2010*

**Geography**

elderly - Health care[hospitals] -recreation[clubs,parties,bingo] -home care -transportation -55 pluss including services -funeral services -elavators\hrdralic chair lift -basic services -food -handicap parking -discounts -lisence to drive this is my iformation so i start
*May 13, 2010*

**Geography**

i have a project it is on urban planning Committee. so i got Elderly . so i have to present my ideas to my classmates and to teacher. iam starting my presentation like this .... my name is anu and my projct is on Elderly . Elderly people will have helth care..... i think it is...
*May 13, 2010*

**ENGLISH.**

CAN U HELP ME TO MAKE 8 LINES ENGLISH POEM WHICH IS SAID BY ENVIRONMENT?
*April 27, 2010*

**Science**

The bottled water industry has become an enormous, multi-billion dollar a year industry.there are some negative impacts of bottled water idustry on enviroment.many of these bottles are recycled by conscientious consumers, most are not, and are ending up in increasingly over-...
*March 9, 2010*

**SCIENCE **

what time tutors stay
*March 9, 2010*

**science **

please help me write a paragragh please it is due tommorow.
*March 9, 2010*

**science**

for my intro i got a 'Water is the elixir of life'and i got lota of negative impact are trasportation, production is the reliance on fossil fuels,Raw plastic must be heated before it can be injected into bottle-shaped blow molds, and this heat source is often ...
*March 9, 2010*

**science **

it is water bottled compony is currentl employing sustainale development first we have to tell breif history about negative impact of industry second we have to explain new sustainable practices of the idustry third we have to tell what is the store in the future of this ...
*March 9, 2010*

**science**

just help me how to start my intoduction on bottled water idustry
*March 9, 2010*

**science **

can you tell me negative impact of water bottled industry
*March 9, 2010*

**4th grade**

Megan drew a shape with four sides. Two of the sides are parallel. the other sides were not parallel. What kind of shape did Megan draw?
*March 4, 2010*

**science**

identify a company that is currently employing sustainable development practices i have one company coco cola but i need three please help me
*March 3, 2010*

**Child Day Care Management**

i think answer is a
*February 22, 2010*

**science**

____Na + ___H2O give us __ NaOH+ ___ H2O this a chemistry;Balancing Chemical Equation H2O is water sorry because i don't know how to put 2 in bottom and explain me how you figuire it out
*February 3, 2010*

**english**

this is a scene of the book Dawn Bosco's on her way to summer camp. She can't wait for the fun to begin, but when her shell mirror and a favorite pin disappear, it's time for the Polka Dot Private Eye to investigate. can you tell haiku poem for this scene and it ...
*January 29, 2010*

**english**

this is a scene of the book Dawn Bosco's on her way to summer camp. She can't wait for the fun to begin, but when her shell mirror and a favorite pin disappear, it's time for the Polka Dot Private Eye to investigate. can you tell haiku poem for this scene and it ...
*January 29, 2010*

**english**

this is a scene of the book Dawn Bosco's on her way to summer camp. She can't wait for the fun to begin, but when her shell mirror and a favorite pin disappear, it's time for the Polka Dot Private Eye to investigate. can you tell haiku poem for this scene and it ...
*January 29, 2010*

**english **

She's called a finder For things others lost, she is a kinder who never asked for cost can you coreect if this is wrong thanks
*January 29, 2010*

**english**

what does rhyme with finder for the message of the book. thanks!!!!!!!!!!!!!!!!!!
*January 29, 2010*

**english**

my brother had read a book & the book message is that the girl of the book likes to help everyone for finding their stuff. So he has to make a 4 line poem by using the message. can you help us thaksss
*January 29, 2010*

**math**

The slant height of a cone is square root 12cm. Find the maximum volume of the cone.
*January 26, 2010*

**ela**

can you proof read once more please it was grammar worksheet i just corrected but i thought it will lots of mistake that why i gave to you to proofread. tomorrow i have to tell the answers because everyone has some paragraph On April 9, 1917, Easter Monday, Canadian soldiers ...
*January 20, 2010*

**gramar**

please proof read it and i try my best fixing my mistake can you check my puncuation and capitalization. please On April 9 1917 easter Monday,Canadian soldiers in World war I mounted on their most important offensives of the war.Vimy Ridge,a hill in northan France had been ...
*January 20, 2010*

**algebra**

3/3 + 7/3 t= 2.3333333333333
*January 17, 2010*

**elA**

i dont know what to do and my teacher gave me these topics
*January 17, 2010*

**ela **

like every mom says to clean thier and whatever
*January 17, 2010*

**ela**

and onother next presentation if i would prime minister..........
*January 17, 2010*

**ela**

this things my mom do but i need like differrent my mom ( lazy)
*January 17, 2010*

**ela**

i have presentation i need 3 points like..f i would my mom i will never say to help so i need 3 more points to add in my paragraph. so you can start like if i was my mom ......
*January 17, 2010*

**ela **

i have a presentation so i need 3 points and there was 8 and i did 5 so till know i need 3 more points: if i would my mom...... thanks
*January 17, 2010*