Friday

August 22, 2014

August 22, 2014

Number of results: 12,641

**science equations**

my grand daughter is having a awful time with this and i can't help her but if you would explain it to me maybe i can help here goes a skier with a mass of 48kg moves with a velocity of 11.45 m/s east. what is the skier's momentum p=mxv.
*January 24, 2008 by summer*

**Derivatives**

I have gotten so many different responses from mine on this question Can someone PLEASE write out the steps for me for this. Thanks f'(x)= 2x/(x^2+1) Find the second derivative. I get 4x^3 + x^2- 12x + 1
*May 6, 2013 by Alaina*

**chemistry**

A stock solution containing Mn2+ ions was prepared by dissolving 1.168 g pure manganese metal in nitric acid and diluting to a final volume of 1.000 L. Calculate the concentration of the stock solution.
*August 9, 2012 by rachel*

**Physical Science**

What is the frequency of electromagnetic radiation that has the same wavelength as the sound waves of middle C on a piano? A) 1.1 x108 Hz B) 2.2 x108 Hz C) 4.4 x108 Hz (my answer am I correct) D) 6.6 x108 Hz
*October 5, 2011 by Anonymous*

**Physics**

The third floor of a house is 9 m above the street level. How much work (in kJ) is required to lift a 700-kg piano to the third-story level?
*July 3, 2012 by Bruin*

**English**

At the school talent show, Tom is doing voices of the formal President. Don is presenting a pansori, a kind of folk play. David and Tony are singing Oh! Susanna to a piano. (Would you check the passage? Correct errors, please.)
*April 3, 2013 by rfvv*

**What does your overall grade have to be to pass?**

I'm in the eighth grade and mine is 64 percent am I passing?
*June 5, 2014 by nonononono*

**report**

I'm doing a Point Of Interest report on: *Grand Canyon * NASA NASA is in Houston TX I have NO clue about any one of these!! What do I do??
*November 14, 2011 by lizzy*

**english**

i want to post a story of mine can anyone tell me any website where i can post one.....plz say
*October 22, 2008 by Anonymous*

**6th grade math**

1/3p + 7 = 12 - 2/3p what does P equal first check how Avril did it on her question then check mine
*March 4, 2010 by Spunky*

**English **

Please write this. Write simile for Valentine's?I give mine teacher.Be nice!
*February 11, 2011 by Michaela*

**math**

i have 250 and my brother has 150 find the ratio of my brother money to mine
*January 31, 2012 by emma*

**math HELP PLZ DO MINE**

There are 64 kids in the swimming pool there are 8 more girls than boys How many Boys are there?
*March 4, 2012 by gabby*

**Math**

Is there a way to get an message or I have to scroll through these Maths to find me because I can't find mine
*September 12, 2012 by Pat*

**PHYICS HELP**

While a person is walking, his arms swing through approximately a 45° angle in .530s. As a reasonable approximation, we can assume that the arm moves with constant speed during each swing. A typical arm is 70.0 cm long, measured from the shoulder joint. 1) What is the ...
*February 15, 2012 by BoB*

**physics**

A ski jumper launches from a ski jump that is oriented parallel to a hill. The jump has a vertical drop of 50 m and the coefficient of friction μ between the skier and the jump is 0.05. The launch point is 5 m above the hill and there is a small lip at the bottom of the ...
*August 16, 2013 by Anonymous*

**physics**

A piano tuner hears one beat every 2.8 s when trying to adjust two strings, one of which is sounding 440 Hz, so that they sound the same tone. How far off in frequency is the other string?
*February 10, 2010 by DJ*

**physical science **

A 30.0kg child standing from rest slides down a water slide with a vertical height of 10.0m. What is the childs speed (a)halfway down he slides vertical distance and (b)three-fourths of the way down? (Neglect friction?
*November 6, 2012 by marlau*

**medical coding**

If you have 99cent unit cost 40 number of units $39.60 total cost what %of grand total. I need to see the formula
*January 28, 2014 by carol*

**Nurs**

i need to draw a concept map that represents the relationships among the concepts under study for either Middle-range theory, Grand theory, or practice theory. HELP!
*February 10, 2013 by Tabby*

**Science**

What is one thing that could happen to an ecosystem (mine is a pond) that would be helpful or beneficial to the ecosystem?
*August 30, 2007 by Peyton*

**math**

What is the minimum value of N that will make this statement true: If we pick any N composite numbers from 1 to 1000, then we can find 2 numbers whose greatest common divisor is not 1. Details and assumptions You may use the fact that there are 168 primes from 1 to 1000.
*February 13, 2013 by harsh*

**math**

In how many ways can the grand prize ticket and second prize ticket be selected from 400 tickets?
*February 11, 2013 by joy*

**socials--Barkerville the Evolution of a town**

Would you have preferred to mine or to operate a business that supported the miners, if you had been an inhabitant of Barkerville during its gold rush? I would have chosen to operate my own business to support the miners. By choosing to run my own business, I could help and ...
*June 8, 2011 by Emma*

**pHYSICS**

Packages dropped by planes in the olden days didn't have onboard guidance or propulsion systems such as are found today. The path of the package was determined by the initial veloctiy (of the person that dropped that the package) and the acceleration due to gravity. If a plane...
*September 20, 2007 by McSmarty*

**8th grade**

Please Help Me. I'm doing a Science Fair Project, and I need help with finding simmilar experiments to mine. My experiment is: Which saliva is cleaner: Cat, Dog, or Human???
*October 28, 2009 by Ben *

**algebra 1b**

to determine the number of deer in a game preserve a conservationist catches 330 deer, tages them and lets them loose later 672 deers are cought 168 of them are tagged how many deer are in the preserve
*March 28, 2012 by karon*

**physics**

A model of a helicopter rotor has four blades, each 3.40 {m} in length from the central shaft to the tip of the blade. The model is rotated in a wind tunnel at 580 {rev/min}. What is the radial acceleration of the blade tip, expressed as a multiple of the acceleration g due to...
*May 22, 2012 by Kelly*

**physics**

It is reasonable to assume that the bulk modulus of blood is about the same as that of water (2.20 GPa). As one goes deeper and deeper in the ocean, the pressure increases by 1.0*10^4 Pa for every meter below the surface. If a diver goes down 33.0 m (a bit over 100 ft) in the ...
*April 13, 2008 by Erin*

**Angular acceleration**

Appreciate if someone can advise on how to calculate the following: A hoist lifts a 3.5kg load from rest, and has a final velocity of 2 m/s after 4 seconds. The motor can develop a torque of 4 Nm. Determine: i) The linear acceleration of the mass. ii) The angular acceleration ...
*March 24, 2007 by BIGEYE*

**math!!!!!!!!!!**

how would you do this problem with intergers? 30+(-25)+(-15) when I did it I got -10 is that right? try doing it on a calculater i would but i can't find mine. Yes the answer is -10.
*September 12, 2006 by Nikki*

**Sra.JMcGin**

Is Spanish your first language? It was mine and my spanish is in need of improvement. However, yours is beautiful;-)
*September 7, 2008 by jules*

**science**

is establishing an open pit diamond mine in the far north (tundra) a sustainable or not a sustainable practice?
*September 9, 2009 by alex*

**Physics/Calculus**

At a county fair, a boy and two friends bring their teddy bears on the giant Ferris wheel. The wheel has a diameter of 14.8 m, the bottom of the wheel is 1.8 m above the ground and its rim is moving at a speed of 1.0 m/s. The boys are seated in positions 45° from each other. ...
*October 14, 2010 by Donny*

**micro economics**

1) Assume that the gold-mining industry is competitive. a) Illustrate a long-run equilibrium using diagrams for the gold market and for the a representative gold mine. b) Suppose that an increase in jewellery demand induces a a surge for in the demand for gold. Using your ...
*April 5, 2012 by Silvia*

**math**

100 raffle tickets are sold for $3 with one grand prize of $200. Julie purchased one ticket. What is her expectation? What is the fair value of a ticket?
*January 8, 2013 by tony*

**Spanish**

Can someone please explain to me how to do this: Traduce las frases al espanol, por favor. 1. Don't rent the apartment 2. Don't leave 3. Don't pass the papers 4. Never play the piano 5. Don't visit your grandmother etc.... Please help. I have to do 20 sentences. Thanks.
*May 12, 2008 by John*

**physics**

Gayle runs at a speed of 8.00 m/s and dives on a sled, initially at rest on the top of a frictionless, snow-covered hill, that has a vertical drop of 14.0 m. After she has descended a vertical distance of 5.00 m, her brother, who is initially at rest, hops on her back, and ...
*October 21, 2012 by Anonymous*

**Mathematics-please help!**

The first term of the sequence is -168 and every term after the first is 8 more than term immediately proceeding it. Find the 88th term.
*June 9, 2012 by Jeconiah*

**Mathematics-please help!**

The first term of the sequence is -168 and every term after the first is 8 more than term immediately proceeding it. Find the 88th term.
*June 9, 2012 by Jeconiah*

**Math**

A university bookstore recently sold a wirebound graph-paper notebook for $2.64, and a college-ruled notebook for $3.61. At the start of spring semester, a combination of 50 of these notebooks were sold for a total of $168.86. How many of each type were sold?
*January 15, 2011 by Tory Smith*

**To Dr Russ**

I hope you come around often. We need someone with a little organic background. Mine is TOO little (and too late!).
*April 18, 2007 by DrBob222*

**Jokes**

I am in need for a funny joke which I need to add in my skit. Please give me your ideas, and with them I will try to make mine, thanks:-)
*July 20, 2009 by Erik*

**ms. sue **

ms. sue i had to make more ads but this time on clothing. have i made mine seem powerful?
*October 25, 2010 by Teressa*

**Science**

What Element am I? My properties are very similiar to sodium. I am lighter than the element that has an atomic number one less than mine.
*February 24, 2011 by mary k.*

**math**

228 people have registered for a sightseeing at the grand canyon. if a toutr director can take 35 people on each tour how many tour directors will be needed to accomadate everyone?
*October 2, 2007 by rebeca*

**english**

17. In which sentence is the word but used as a preposition? A. John liked baseball but not football. B. We would like to visit the Grand Canyon, but our vacation time is up. C. Children should be seen but not heard. D. None but the brave shall enter in.
*March 21, 2014 by marie*

**music appreciation**

The overture for A Midsummer's Night Dream is a one-movement work ________? a.in sonata form . b. famous for interplay of piano,violin and cello. c.known for massive sound of the orchestra. d. that presents the same musical idea in each strophe of the text. thank you
*March 18, 2011 by me*

**physics**

A suspension bridge is 66.0 m above the level base of a gorge. A stone is thrown or dropped from the bridge. At the location of the bridge, g has been measured to be 9.83 m/s2. In each of the following, assume that there is no air resistance. (a) If you drop the stone, how ...
*September 21, 2010 by Kacy*

**chemical test**

I'm going to do the Baeyer test (Pottasium permanganate) Instructions say to disslove 25mg of unknown or 2 drops of liquid unknown in 2ml of 95% ethanol. Slowly add 1% aqueous solution (weight/volume) of potassium permanganate, drop by drop with shaking, to the unknown. In a ...
*December 2, 2007 by ~christina~*

**Physics (torque)**

The steering wheel of a certain vehicle has a diameter of 38.9 cm, and it turns a shaft that is 8.3 cm in diameter. If a 85.9 N force is needed to turn the steering wheel, what torque is exerted on the wheel?
*November 16, 2012 by Anonymous*

**algebra**

A university bookstore recently sold a wire-bound graph-paper notebook for $2.64, and a college-ruled notebook for $3.61. At the start of spring semester, a combination of 50 of these notebooks were sold for a total of $168.86. How many of each type were sold?
*November 13, 2010 by running wild*

**science**

A ski jumper launches from a ski jump that is oriented parallel to a hill. The jump has a vertical drop of 50 m and the coefficient of friction μ between the skier and the jump is 0.05. The launch point is 5 m above the hill and there is a small lip at the bottom of the ...
*February 17, 2013 by raj*

**College Physics**

A steel piano string for the note middle C is about 0.68 m long and is under a tension of 400 N. If the fundamental frequency is 226 Hz, what is the string’s diameter? I have tried it several times and continue to get an incorrect answer.
*November 14, 2011 by Anon14*

**Geography**

which of the following is an example of a physical feature on earths surface? a) Golden Gate Bridge b) Grand Canyon c) San Diego Zoo d) Sea World Physical features are not man-made. What do you think the answer is?
*March 15, 2007 by feroz*

**SAT Essay**

Mr. Bob Pursley- You have critiqued multiple essays of mine- is there recurrent mistake that I make? What can I do to make it go from a 5 to 6? Thank you so much.
*November 4, 2012 by Sanya *

**MINE Math**

16. Calculate the interest earned on a savings account with $800.00 that is invested at 5% annual simple interest for 5 years. (1 point)
*December 6, 2012 by Milly*

**math**

a group of hikers begin their expedition at the grand canyon at an elevation of 56 feet below sea level at 5:00 am .if they climb 14 vertical feet up each hour until 10:00 am ,what is their new elevation ?
*July 10, 2013 by LESLIE*

**Calculus**

I wanted to know how you would know that -4x^2 + 2x +90 / x-5 would be able to factor down to (x-5)(-4x-18)/x-5 By looking at -4x^2 + 2x +90 / x-5 , I would never think that it could be factored down to (x-5)(-4x-18)/x-5 How should I approach it so I know that it could be ...
*September 17, 2009 by Z32*

**math**

Julia is reading a 456-page book. During the past 7 days she has read 168 pages. If she continues reading at the same rate, how many more days will it take her to complete the book?
*October 18, 2011 by Jojo *

**Physics**

An electric immersion heater is rated 5 A when connected to a 120V circuit. What is the resistance of the heater? If it takes 168 KJ to heat 500 ml of water from 20 deg C to boiling, how long does it take to heat the water?
*May 18, 2012 by Don*

**quick math**

A patio measures 12 feet by 14 feet. How many 8-inch-square paving stones are needed to pave the patio? A. 21 B. 252 C. 378 D. 168 my answer is B, but the right answer is C? can someone explain that to me thanks
*March 13, 2013 by mathlab*

**Biology**

Please help. Assume that a cell culture has a density of 10^8 cells/mL. You transfer 20 microliters of this culture onto the microscope slide. A) How many cells do you expect will be in this 20 microliters drop you placed under the microscope? B) You add to your sample above ...
*September 12, 2011 by Celine*

**Biology**

Please help. Assume that a cell culture has a density of 10^8 cells/mL. You transfer 20 microliters of this culture onto the microscope slide. A) How many cells do you expect will be in this 20 microliters drop you placed under the microscope? B) You add to your sample above ...
*September 12, 2011 by Celine*

**Biology**

Please help. Assume that a cell culture has a density of 10^8 cells/mL. You transfer 20 microliters of this culture onto the microscope slide. A) How many cells do you expect will be in this 20 microliters drop you placed under the microscope? B) You add to your sample above ...
*September 12, 2011 by Celine*

**Biology**

Please help. Assume that a cell culture has a density of 10^8 cells/mL. You transfer 20 microliters of this culture onto the microscope slide. A) How many cells do you expect will be in this 20 microliters drop you placed under the microscope? B) You add to your sample above ...
*September 12, 2011 by Celine*

**harddrives**

are there any speeds in MHz for harddrives. for IDE, EIDE,SCSI,SATA, USB? i looked on internet, but i can't find it any websites or also the costs of these harddrives Thank you for using the Jishka Homework Help Forum. Since I don't know if you have a powerbook, a PC or a MAC...
*October 26, 2006 by Anonymous*

**Math**

One thousand raffle tickets are sold for $4.00 each. One grand prize of $800 and two consolation prizes of $100 each will be awarded. Jeremy purchases one ticket. Find his expected value.
*July 19, 2011 by Jen*

**Math**

One thousand raffle tickets are sold for $4.00 each. One grand prize of $800 and two consolation prizes of $100 each will be awarded. Jeremy purchases one ticket. Find his expected value.
*July 21, 2011 by Jen*

**Math**

One thousand raffle tickets are sold for $1.00 each. One grand prize of $400 and two consolation prizes of $100 each will be awarded. Jeremy purchases one ticket. Find his expected value. ??
*July 30, 2011 by Jen*

**geometry**

One thousand raffle tickets are sold for 4.00 each. one grand prize of $800 and two consolation prizes of $ 100 each will be awarded. Jeremy purchases one ticket. Find his expected value.
*July 24, 2012 by angela*

**English**

I not real understand this poem Wordsmith by Susan Young In my mind I call my father the Pollyfilla king, watch with something akin to awe as he begins the arduous process of filling in the gaps, the long winded cracks that travel down the walls of my house like run on ...
*November 20, 2012 by Mohammad*

**Ionic Crystal Structures**

Calculate the density of CsCl. Use 169pm as the radius of Cs+. rCs+= 169pm length= 2*169= 338pm= 3.38*10^-8 v= l^3= (3.38*10^-8)^3 = 3.86*10^-23 m= 2* 168.36 g/mol / 6.022*10^23 = 5.59*10^-24g d= m/v d= 5.59*10^-24g/ 3.86*10^-23 d= 14.48 g/cm^3 BUT the correct answer is 4.24 g...
*February 6, 2009 by --*

**Chemistry**

Can someone show and explain to me step by step how to do the problems? I feel like I am doing it incorrectly. a) The solubility of PbI2 is 3.67 mg per mL. What is the Ksp? b) Three drops of 0.20 M potassium iodide are added to 100.0 mL of 0.010 M lead nitrate. Will a ...
*March 25, 2014 by Miki*

**calculus**

what is volume of each drop (US unit)?
*May 8, 2013 by vahid*

**music**

how can i get better at piano without a teacher? It's the same answer as the New Yorker responded to this question: "How do I get to Carnegie Hall?" The answer: "Practice, practice, practice."
*September 15, 2006 by angela*

**Physics**

While a person is walking, his arms swing through approximately a 45° angle in .530s. As a reasonable approximation, we can assume that the arm moves with constant speed during each swing. A typical arm is 70.0 cm long, measured from the shoulder joint. (a) What is the ...
*February 16, 2012 by GG*

**Physics Help **

While a person is walking, his arms swing through approximately a 45° angle in .530s. As a reasonable approximation, we can assume that the arm moves with constant speed during each swing. A typical arm is 70.0 cm long, measured from the shoulder joint. (a) What is the ...
*February 16, 2012 by GG*

**math/geometry**

In the course of one five-month period, the water level of a lake went down 6 in., up 12 in., down 3 in., down another 16 in., and up 4 in. How much had the lake level changed at the end of the five months?
*September 17, 2012 by rose gaskell*

**Nutrition**

Are vegetables comprised primarily of carbs, proteins or fat? I'm talking about the digestive system and I want to know what enzyme breaks down vegetables. Pepsin breaks down proteins which is like meat. Gastric lipase breaks down fats which is like cheese and amylase breaks ...
*April 5, 2010 by Lena*

**Mathematics-please help quick!!**

The first term of the sequence is -168 and every term after the first term is 8 more than the term immediately proceeding it. Find the 88th term.
*June 10, 2012 by Scraffii*

**7th Grade Math**

What is the measure of an exterior angle of a regular polygon in which the sum of interior angle measures is 5400 degrees? A. 11.25 degrees B. 30 degrees C. 32 degrees D. 168.75 degrees
*May 5, 2013 by Hilda*

**English **

Which of the following best combine the two sentences. "He sat down silently. He was desperate." a. Silently and desperately, he sat down. b. Silently, desperately, he sat down c. Silently, he sat down, desperately. Is choice a correct? Thanks.
*June 26, 2010 by Jon.*

**Algebra**

An elevator went to the do of a 180m building, stayed for 1 minute, then came down. The total time was 3.5 minutes. If the speed of the elevator when it went up was 1 m/sec less than when it came down, find both speeds (up and down).
*May 20, 2010 by Steven*

**Com 135**

I would like to know how you all start of intro. and conclusion ideas to papers so I can get some ideas that are different from how I write mine.
*February 22, 2008 by Dawn*

**electrical**

when ever a conductor move thought a magnetic field a voltage is in cluded what factors deter mine the amount of voltage that is generated
*November 1, 2009 by john*

**electrical**

when ever a conductor move thought a magnetic field a voltage is in cluded what factors deter mine the amount of voltage that is generated
*November 1, 2009 by john*

**Physics**

It is reasonable to assume that the bulk modulus of blood is about the same as that of water (2.20 m). As one goes deeper and deeper in the ocean, the pressure increases by 1.0*10^4 Pa for every meter below the surface. If a diver goes down 33.0 m (a bit over 100 ft) in the ...
*November 14, 2007 by Christina*

**physics**

A spool of thin wire pivots on a shaft with friction. The wire is pulled by a hanging mass M=1.50 kg. Upon starting from rest and falling a distance D=1.65 m, the mass has a speed V=2.00 m/s. Calculate the energy lost to friction during that time. Inner radius: r=0.50 m. Outer...
*March 25, 2012 by please help:)*

**Math**

a. Write down a secret number, which can be any whole number Multiply by 5 Add 2 Multiply by 4 Add 2 Multiply by 5 Subtract 50 Drop the two zeros at the end. Do you recognize the result? B. Let S stand for a secret number that you begin with in part (a). Write an expression ...
*October 29, 2010 by Kathy*

**computer business system**

1. A list of context-sensitive commands usually activated by right-clicking a screen item. What's this call? a)option group b)drop-down list c)short-cut menu d)dialog box 2.A small preview image of a graphic is a) picture b) thumbnail c) icon d) pixel 3.Is the time taken to ...
*October 2, 2009 by tom*

**Physics: energy**

The spiral shaft in a grain auger raises grain from a farmers truck into a storage bin. Assume that the auger does 6.2 x 10*5 J of work on a certain amount of grain to raise it 4.2 m from the truck to the top of the bin.What is the total mass of the grain moved?
*April 9, 2011 by kelly*

**Physics**

A piano emits frequencies that range from a low of about 28 Hz to a high of about 4200 Hz. Find the maximum wavelength in air attained by this instrument when the speed of sound in air is 336 m/s. Answer in units of m
*February 15, 2012 by Angel*

**Physics**

A battery with voltage drop of 120V is connected in a ciruit containing both series and parallel. Moving in a clockwise direction. R1= 3 ohms there is a connection of point A to point B. In between there is a parallel circuit with R2= 10 ohms to R3=2ohms on the top. On the ...
*March 19, 2008 by Andrea*

**chem**

this is my question Calculate the hydronium ion consentration and the hydroxide concentration in blood in which the PH is 7.3. I dont have invlog on my calculator so I hit log(7.3)= .863 for hydronium. Is this dumb for me to do? That is dumb for you to do. Get a calc that has ...
*March 23, 2007 by Jon*

**advanced math**

Suppose you have 168 meters of fencing with which to make two side-by-side rectangular enclosures against an existing wall. If the rectangular enclosures are adjacent and of the same depth, what is the maximum are that can be enclosed?
*November 3, 2011 by thomas*

**Maths**

168 children went to a them park. If 1/3 of the girls is equal to 4/9 of the boys, how many boys went to the theme park?
*May 6, 2013 by Alex *

**Physics**

A constant torque of 22.9 N·m is applied to a grindstone whose moment of inertia is 0.168 kg·m2. Using energy principles, and neglecting friction, find the angular speed after the grindstone has made 17.1 rev, assuming it started from rest. Answer in units of rev/s
*April 2, 2013 by dallas*

**english**

okay i have 2 out of 3 supporting ideas for my essay but i need 3 so i need 1 more here is mine "does being shy effects my education" please help and thank you
*November 16, 2010 by unknown*

**SAT Essay Critiques**

Mr. Pursley- You have critiqued multiple essays of mine- is there recurrent mistake that I make? What can I do to make it go from a 5 to 6? Thank you so much, I really appreciate it.
*November 4, 2012 by Sanya *

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