1. Chemistry - Science (Dr. Bob222)

    Use the following information to answer this question: Cu+(aq) + e- → Cu(s) E° = 0.521V Cu2+ (aq) + e- → Cu+ (aq) E° = 0.153 V. Given these half cell reactions, an aqueous solution of Cu+ ion in the absence of O2(g) : A. will be thermodynamically

    asked by Ana on May 3, 2014
  2. Ap Chemistry

    A 3.0 molal solution of naphthalene in cyclohexane boils at 89.4 C. What is the boiling point of pure cyclohexane? Although solid naphthalene is slightly volatire, assume its volatility is zero in this calculation. The constant kb for cyclohexane is +2.80

    asked by Grace on February 4, 2007
  3. science/the human body

    explain why a person will die if their heart stops beating for a few minutes People die when their heart stops beating because it has stopped pumping blood throughout the body. The heart is the pump that distributes the blood through the entire body, also

    asked by amy on February 19, 2007
  4. Maath:)

    If an object is thrown vertically upward with an initial velocity of v, from an original position of s, the height h at any time t is given by: h=-16t^2+vt+s (where h and s are in ft, t is in seconds and v is in ft/sec) Solve for t when the object hits the

    asked by Honey on April 30, 2012
  5. algebra2

    If an object is thrown vertically upward with an initial velocity of v, from an original position of s, the height h at any time t is given by: h=-16t^2+vt+s (where h and s are in ft, t is in seconds and v is in ft/sec) Solve for t when the object hits the

    asked by Nancy on April 27, 2012
  6. algebra

    A ball is thrown into the air with an upward velocity of 28 ft/s. Its height (h) in feet after t seconds is given by the function h = –16t² + 28t + 7. How long does it take the ball to reach its maximum height? What is the ball’s maximum height? How

    asked by Jin on March 26, 2012
  7. Math

    Mary wants to buy some new shoes that cost $95. She also wants to buy some packages of socks. Each package of socks costs $8. She has a total of $127 dollars. Write and solve an equation to find how many packages of socks she can buy

    asked by Amani on November 14, 2017
  8. help

    Draw and use a tape diagram to model and solve the problem below. In a soccer league, the ratio of boys to girls is 4 to 6. There are a total of 50 players in the soccer league. Determine how many girls play in the soccer league. A. 10 B. 20 C. 50 D. 30

    asked by alicia on February 20, 2018
  9. Physics

    A lion sees a zebra about 100 feet away. A lion can run at 50 mph and a zebra has been clocked at 40 mph. How long will it take the lion to catch the zebra? Make a table of coordinates for each. Solve by graphing.

    asked by Carol on March 7, 2016
  10. Algebra

    Use an equation to solve the problem. John and two friends rent a canoe at a park. Each person must rent a life jacket. If the bill for the rental of the canoe and life jackets is 41, for how many hours did they rent the canoe?

    asked by Lily on September 15, 2011
  11. Physics

    "An object is rolled up an incline. If the object is 2.75 m up the incline after 4.50s and rolling back down at a velocity of 1.90 m/s, what is the acceleration of the object?" Is this a case of final velocity - initial velocity?? It seems like an easy

    asked by Stuck on July 5, 2010
  12. Math

    Suppose that a country's population is 64 million and its population growth rate is 3.7% per year. If the population growth follows a logistic growth model with r=.053, what is the country;s carrying capacity? How do I solve this problem... or at least

    asked by Taylor on December 3, 2009
  13. Math

    Suppose that a country's population is 64 million and its population growth rate is 3.7% per year. If the population growth follows a logistic growth model with r=.053, what is the country;s carrying capacity? How do I solve this problem... or at least

    asked by Taylor on December 4, 2009
  14. math

    Jonah and his friends go apple picking. Jonah fills 5 baskets. each basket holds 15 apples. if 4 of jonahs friends pick the same amount. how many appples do Jonah and his friends pick in all? please help solve this problem?

    asked by stephie 22 on November 19, 2012
  15. Math help please!

    Write an equation with a variable on both sides of the equal sign that has infinitely many solutions. Solve the equation and explain why it has an infinite number of solutions. Okay so that is the question, I know it's already on Jiskha but I need it to be

    asked by Help me! on January 11, 2018
  16. Managerial Accounting Help

    Cotta Cots uses a standard cost system in which manufacturing overhead is applied to units of product on the basis of direct labor-hours (DLHs). During August, the company actually used 6,100 direct labor-hours and produced 2,500 units of product. The

    asked by Julie on December 19, 2006
  17. 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 labor-hours (DLHs). During August, the company actually used 6,100 direct labor-hours and produced 2,500 units of

    asked by Lese on December 12, 2006
  18. Physics

    A 0.006-kg bullet traveling horizontally with a speed of 1.00 103 m/s enters an 21.1-kg door, imbedding itself 10.4 cm from the side opposite the hinges as in the figure below. The 1.00-m-wide door is free to swing on its hinges. (c) At what angular speed

    asked by Ana on March 19, 2010
  19. Math calculus 2

    A 17650 cubic foot room initially has a radon level of 870 picocuries per cubic foot. A ventilation system is installed that brings in 385 cubic feet of air per hour that contains 5 picocuries per cubic foot, while an equal quantity of the well-mixed air

    asked by Anonymous on February 6, 2018
  20. Math

    Please explain to me how to solve: A circular mirror is surrounded by a square metal frame. The radius of the mirror is 5x. The side length of the metal frame is 15x. What is the area of the metal frame? Write your answer in factored form.

    asked by Jane on January 26, 2012
  21. Algebra

    Write an equation with a variable on both sides of the equal sign that has infinitely many solutions. Solve the equation and explain why it has an infinite number of solutions. Okay so that is the question, I know it's already on Jiskha but I need it to be

    asked by Help me! on January 11, 2018
  22. college algebra

    Solve the problem. A man rode a bicycle for 12 miles and then hiked an additional 8 miles. The total time for the trip was 5 hours. If his rate when he was riding a bicycle was 10 miles per hour faster than his rate walking, what was each rate?

    asked by megan on February 25, 2009
  23. algebra word problem

    Not exactly sure how to solve this. 2000 tickets were sold for a play generating $19,700. The price for tickets $5 for children, $10.00 for students and $12.00 for adults. There were 100 more adult tickets sold than students. Find the number of each type

    asked by Deb on April 29, 2013
  24. Math

    Please explain to me how to solve: A circular mirror is surrounded by a square metal frame. The radius of the mirror is 5x. The side length of the metal frame is 15x. What is the area of the metal frame? Write your answer in factored form.

    asked by Jane on January 25, 2012
  25. Calculus

    please solve it let f be the function defined over { 0 , ∞ ) as ∫ f(x) = x(ln(x)-1)^2 for x>0 and let (c) be its representative curve , we admit that f is continous at x=0 a ) determine lim f(x) / x as x approaching 0 b) find lim f(x) as x approaching

    asked by Darker on May 21, 2016
  26. Help please I am lost, algebra

    I have notes on this from online but they are different from this problem and I don't know how to solve it. Find the equation of a line with the given information: slope -5/4 and g(14)=-6 It is asking for, point slope form, slope intercept form, Function

    asked by Sam on March 23, 2017
  27. chemistry

    I don't even know where to begin to solve this problem please help A 6.5 g piece of copper was rolled out into a thin sheet measuring 24.0 cm x 18.0 cm. The density of copper is 8.90g/cm3 1. Calculate the volume of the sheet of metal 2. Calculate the

    asked by Jennafer on January 25, 2009
  28. science

    Posted by Josh on Saturday, March 17, 2007 at 10:58pm. How many grams of hydrochloric acid are required to react completely with 4.30g of zinc? How many molecules of gas will be produced? For Further Reading science - DrBob222, Saturday, March 17, 2007 at

    asked by Josh on March 18, 2007
  29. Physics

    1. Two blocks on a frictionless horizontal surface are connected by a light string. where m1 = 6.21 kg and m2 = 19.5 kg. A force of 48.4 N 6.21kg --T-- 19.5kg ----->48.4 N The acceleration of gravity is 9.8 m/s^2. Find the acceleration of the system.

    asked by Suaad on February 27, 2014
  30. Chemistry

    crystal structure of cesium chloride (CsCl). 1)Identify the crystal system: Cubic Tetragonal Orthorhombic Rhombohedral Hexagonal Monoclinic Triclinic 2)Identify the Bravais lattice: Simple cubic Body Centered Cubic Face Centered Cubic Hexagonal 3)Identify

    asked by selly on November 24, 2012
  31. Physics

    1. Two blocks on a frictionless horizontal surface are connected by a light string. where m1 = 6.21 kg and m2 = 19.5 kg. A force of 48.4 N 6.21kg --T-- 19.5kg ----->48.4 N The acceleration of gravity is 9.8 m/s^2. Find the acceleration of the system.

    asked by Fabricus on March 6, 2014
  32. Geometry

    Show the conhecture is false by finding a counterexample... 1. The differnece of the absolute value of two numbers is positive meaning /a/ - /b/ > 0 I do not get that.... =/ HELP. If absolute value of a is greater than the absolute value of b, then the

    asked by Katy on August 14, 2007
  33. math help quickly

    Find the length of the total time, of the journey of Sky Lab 4 was, in days, hours, and minutes. Then convert the time of the journey into just hours. Also, convert the time of the journey into just minutes. Show your calculations.

    asked by math project on May 4, 2009
  34. Physics

    The average distance between the earth and the sun is 1.50X10^8 A. calculate the average velocity in km/h of the earth along its original path The average distance between the earth and the sun is 1.50X10^8 B. convert your answer from km\h to m\s. Show all

    asked by Layton on September 7, 2016
  35. Algebra

    Noelle bought some boxes of water bottles for a picnic. Each box contained 24 bottles of water. If c is he number of boxes, write an expression to show home many bottles of water Noelle bought.

    asked by Carol on April 20, 2015
  36. computer programing

    okay I need a little help here on next program this what it say for first one which I have done. Create a counting program that counts backward from 100 to 1 in increments of 10. #include < stdio.h > int main () { Int i; while ( I > = 1 ) { printf ( “ %

    asked by Poohboi on February 4, 2016
  37. mathematic

    find the value of k if x equal 2 and y equal 1 is a solution of the eq.2x +3y equal k

    asked by dolly on February 12, 2016
  38. USF

    If I need 600ml of a 0.5M NaOH solution and I am given 3M of NaOH, how much NaOH will I need?

    asked by Mc. K on June 16, 2010
  39. math

    log(x+8)-log(2)=log(2x+2) solution set

    asked by Anonymous on May 3, 2011
  40. Finance

    Thomson Media is considering some new equipment whose data are shown below. The equipment has a 3 year tax life and would be fully depreciated by the straight line method over 3 years but it would have a positve pre-tax salvage value at the end of year 3,

    asked by Nick on April 12, 2011
  41. Finance

    Thomson Media is considering some new equipment whose data are shown below. The equipment has a 3 year tax life and would be fully depreciated by the straight line method over 3 years but it would have a positve pre-tax salvage value at the end of year 3,

    asked by Nick on April 12, 2011
  42. Art

    An artist places a notebook and pen in the gallery of his latest exhibition and asks viewers to leave comments about his work. He is trying to help audience members become what type of observers? Answers: A. Active Observers B. Reluctant Observers C.

    asked by Light on February 9, 2016
  43. Algebra 3-4

    The first stage of a rocket burns 28 s longer than the second stage. If the total burn time for both stages is 152 s, how long does each stage burn? Describe how you found your answer. I was originally thinking to divide 152 by 2 then add 28, but I

    asked by Samantha on September 12, 2014
  44. statistics

    Conduct a chi square analysis to determine whether sex and year in college are related. I have tried to submit the data but I can't seem to make the submission work. For my data I used 20 males and 20 females. and for the year in college I have 10

    asked by angela on July 31, 2014
  45. Calculus

    I would like to make sure my answer is correct: Question: the base of a solid is the triangular region with the vertices (0,0), (2,0), and (0,4). Cross sections perpendicular to the x-axis are semicircles. Find the volume of this solid. My Work: ∫[0,2]

    asked by Rose on January 16, 2017
  46. Spanish

    what is the most likely the reason that Spanish-speaking students in Costa Rica, Mexico, and Argentina all learn a second language in school? a. Spanish is a common language b. Spanish is not understood by many people c. it is important to be able to

    asked by Kaai97 on October 29, 2015
  47. physics

    An archer puts a 0.26-kg arrow to the bow-string. An average force of 200 N is exerted to draw the string back 1.4 m. (a) Assuming no frictional loss, with what speed does the arrow leave the bow? m/s (b) If the arrow is shot straight up, how high does it

    asked by Haley on May 10, 2012
  48. physics

    ok it says a shopper in a supermarket pushes a cart with a force of 36N directed at an angle of 26 degrees downward from the horizontal. find the work done by the shopper on the cart as the shopper moves along a 50.6m length of aisle. answer in units of J.

    asked by Claudia on November 1, 2008
  49. Science

    36kg of some material undergoes a process in a piston-cylinder apparatus starting with an initial volume of .057m^3 and pressure of 680kPa. The final volume is twice the initial. Compute the work done by the substance for the following processes: (a)

    asked by J.T. on July 20, 2015
  50. Physics: Oscillations and spring constant

    A student measured 15s for the 20 complete oscillations for an object of 200g attached at the free end of a spring. Calculate the period of oscillation (T) and the spring constant (k). My work (just wanted to ask for opinions if this is right): T =

    asked by Jenna on June 26, 2016
  51. Chemistry

    Why wouldn't you do this reaction directly in a lab (and would rather use Hess' Law to determine the enthalpy of formation)?: 1/2N2(g) + 2H2(g)+ 1/2Cl2(g) -> NH4Cl(s) I don't think the reactants are that dangerous...? It's still pretty safe to do in a lab,

    asked by a Canadian on February 18, 2013
  52. math

    Roberto and Luisa Barron Lopez each work full time jobs, and Luisa's mother, Carmena, collects a monthly pension of $628. Between the three of them, their total household income is $4238 each month. If Luisa earns $1772, how much does Roberto earn each

    asked by jaime on October 1, 2012
  53. Physics

    A man throws a rock of mass m = 0.310 kg straight up into the air. In this process, his arm does a total amount of work Wnet = 105 J on the rock. Calculate the maximum distance, h, above the man's throwing hand that the rock will travel. Neglect air

    asked by James on May 27, 2012
  54. Chem

    Determine the percent yeild of: KCl3(s)--> KCl(s)+ O2(g) 2.14g of KCl3 produces 0.67 of O2 I get 123% when the correct answer is 80% My work: KCl3: mm = 122.45, n =0.017 Theoretical yield: .017mol * 32g/mol Pecent Yield: 0.67g/ 0.544g *100% = 123%

    asked by Sara on October 7, 2009
  55. Physics

    The model airplane in figure below is flying at a speed of 21 m/s on a horizontal circle of radius 18 m. The mass of the plane is 0.82 kg. The person holding the guideline pulls it in until the radius becomes 11 m. The plane speeds up, and the tension in

    asked by Elizabeth on October 20, 2012
  56. Chemistry

    microwave ovens work by irradiating food with microwaves, which is absorbed by the water molecules in the food and is converted into heat. Assuming that microwave ovens emit radiation with a wavelength of 12.2cm, calculate how many photons are emitted per

    asked by Kez on November 5, 2012
  57. Filipino to english

    kagigising ko lang,, natulog agad akon padating ko, kasi hindi ako makatulog kahapon bago pumasok,, kaya antok ako sa work kanina, kaya pag uwi ko natulog ako,, 12:20pm na dito,, ingatka

    asked by debbie on January 7, 2009
  58. Art

    Do you just become a baker or do you need to stay at a lower level and work your way up to a higher level? Thank you for using the Jiskha Homework Help Forum. You don't just BEGIN as a baker. Please visit the following sites to learn more: 1. (the skills

    asked by Emily on May 21, 2007
  59. Fluid Mechanics

    A cylindrical tank 2m diameter and 4m long with its axis horizontal, is half filled with water and half filled with oil of density 800kg/m^3. Determine the magnitude and position of the net hydrostatic force on one end of the tank. The answers should be

    asked by Claire on November 3, 2010
  60. Physics

    A track has a height that is a function of horizontal position x, given by h(x) = x^3 + 4x^2 − 44x + 16. Find all the positions on the track where a marble will remain where it is placed. What kind of equilibrium exists at each of these positions? (Enter

    asked by James on June 22, 2012
  61. Compliments

    Hey, Im trying to find lots of compliments. For example, if someone makes a really nice drawing or whatever, and enhances it with their own techniques and stuff, what comments could I give to them? Here is my list: *Very creative work *Like the blend and

    asked by Rebecca on February 24, 2011
  62. 5th Grade Math

    Complete each pattern: 25,_____61,_____ We are thinking 43 and 80 since you can count up and down by even and odd. 64,_____,_____,_____,32 This one is no clue 25,43,61,80 YOUR RIGHT ABOUT THIS ONE 32,40,48,56,64 YOU GET THE ANSWER BY MULT BY 8'S Thank you

    asked by Trudy & Mark on October 5, 2006
  63. physics

    A steel ball has a mass of 3.8 kg and rolls along a smooth, level surface at 56 m/s. (a) Find its kinetic energy. 1 I got 404.32J bu it doset work (b) At first, the ball was at rest on the surface. A constant force acted on it through a distance of 22 m to

    asked by Amelia on May 10, 2012
  64. physics

    i have noo idea how to do this, please hellppppp A 15.6 kg block is dragged over a rough, hor- izontal surface by a constant force of 72.2 N acting at an angle of angle 34.8 above the horizontal. The block is displaced 24.6 m and the coefficient of

    asked by ally on February 25, 2011
  65. Math

    A cart full of packages weighing 180 pounds is rolling down a ramp 12 feet long at an incline of 25° (the force applied by gravity is equal to the weight of the package). Find the work done by gravity as the cart moves the length of the ramp. Assume that

    asked by Elise on January 17, 2017
  66. math

    You are still debating about the two different computers. If you are paid $15.00/hour and your deductions are FICA (7.65%), federal tax withholding (12%), and state tax withholding (8%), how many hours do you have to work to pay for the new computer? Be

    asked by jess on December 15, 2015
  67. physics

    An initially stationary 15.0-kg crate of cheese wheels is pulled via a cable a distance d= 5.70m up a frictionless ramp to a height of h= 2.50m, where it stops. What is the potential energy of the crate after it is lifted? How much work is done during the

    asked by rosie on June 30, 2011
  68. Chemistry

    In this equilibrium H2(g) + I2(g) 2 HI(g). What is happening on the molecular level? Like given the right energy when a H2 molecule hits a I2, is electron transfered and they just stick together? Or do they have to be in the right position? Who transfers

    asked by Sarah on April 5, 2011
  69. Phyics

    two blocks are moving down a ramp that is inclined at 30.0. Box 1(of mass 1.55kg) is above box 2(of 3.1kg) and they are connected by a massless rod. Find the tension of the rod if the coefficient of kinetic friction for box 1 is .226 and box 2 is .113 my

    asked by Jess on November 26, 2015
  70. physics

    A diver of mass m drops from a board 12.0 m above the water's surface, as shown in the figure. Neglect air resistance. Suppose the diver vaults off the springboard, leaving it with an initial speed of 3.96 m/s upward. Use energy conservation to find his

    asked by josef on March 6, 2015
  71. physics

    A proton is moving at 425 m/s. (a) How much work must be done on it to stop it?(answer in joules) (A proton has a mass of 1.67×10−27 kg.) (b) Assume the net braking force acting on it has magnitude 8.01×10−16 N and is directed opposite to its initial

    asked by jamaisa on March 8, 2011
  72. College: Chemistry

    Hi there, I need help on my homework for chemistry and I do not understand the step on how to work this problem out. Please help me with this problem: On a Sunday morning while having your breakfast you determine that you need about 2.95X10^(5)J to heat

    asked by Mai on February 15, 2009
  73. Help Physics

    Two equal-mass stars maintain a constant distance apart of 6.0 1010 m and rotate about a point midway between them at a rate of one revolution every 12.0 yr. (a) Why don't the two stars crash into one another due to the gravitational force between them?

    asked by Ellie Mae on October 9, 2006
  74. classroom management

    Consider other types of interruptions, such as a fire drill or having a student paged to the front office during a lesson. i cant think of any but having a disruptive student address how you will adapt your strategies to work under a variety of unexpected

    asked by scooby on April 25, 2010
  75. physics egg drop

    What is the best idea for an egg drop project. it has to survive a 5 meter drope without craking or breaking open.(grade A egg wich is a bog egg). The desinge or idea has to be able to be opened and have the egg in hand within 10 sec, so packing it into

    asked by physics on October 6, 2009
  76. maths

    1 a boy was employed on the understanding that he was to receive 'p' paise for everyday he worked and 'q' paise for everyday when there was no work for him after 'd' days his total earnings amounted to rupees x how many days had he worked

    asked by riana on May 21, 2012
  77. math

    Jen spent 1 1/2 hours working on ms thomkin car on Monday. She spent 2 3/4 more hours on Tuesday to finish the tune up. How many more hours in all did she work on ms thommin car is the answer 4 1/2 hours

    asked by anoymous on December 2, 2014
  78. Calculus

    A conical vessel is 12 feet across the top and 15 feet deep. If it contains a liquid weighing ñ lbs/ft^3 to a depth of 10 feet. Find the work done in pumping the liquid to a height of 3 feet above the vessel.

    asked by Denise on September 12, 2010
  79. Math

    1: Classify the quadrilateral using the name that best describes it I tried posting it but it didn't work 2: which statement is a true statement 3: which statement is a true statement 4: Which property is not a characteristic of a polygon 5: Which figure

    asked by Please Help on January 19, 2018
  80. Physics

    I have to do a lab on cathode ray tubes. Can you explain to me how the cathode ray tubes work? And can you mention the voltages involved, what they do, and what effect varying these voltages has on the electron beam.

    asked by Linda on February 7, 2010
  81. math

    A garden centre buys plants to sell. It sells them at a profit of 28%. A rose bush is sold for £3.40 Work out the price that the garden centre paid for the rose bush.

    asked by HS on October 23, 2013
  82. chem

    6.01-L cylinder contains 1.25 mol of gas A and 4.54 mol of gas B, at a temperature of 32.8 °C. Calculate the partial pressure of each gas in the cylinder. Assume ideal gas I have work this question three time and can not get the rt answer

    asked by dinah on December 1, 2013
  83. discrete math

    A bubble sort begins with the array: 372418 Work through the lists obtained at each step of the bubble sort. Complete the table below for the intermediate step where 7 is at position four in the array. [][][]7[][]

    asked by AJ on March 9, 2017
  84. physics

    A 1.80-g hailstone, which can be modeled as a particle, falls a vertical distance of 155 m at constant speed. What is the work done on the hailstone by gravity and air resistance? (a) gravity J (b) air resistance J

    asked by joy on March 11, 2018
  85. chem

    6.01-L cylinder contains 1.25 mol of gas A and 4.54 mol of gas B, at a temperature of 32.8 °C. Calculate the partial pressure of each gas in the cylinder. Assume ideal gas I have work this question three time and can not get the rt answer

    asked by dinah on December 1, 2013
  86. Physics

    A chain is held on a frictionless table with 1/3 of its length hanging over the edge. If the chain has length L = 33 cm and mass m = 21 g, how much work is required to pull the hanging part back onto the table?

    asked by Ethan on February 16, 2011
  87. physics

    A 40.0 kg crate is initially moving with a velocity that has magnitude 4.09 m/s in a direction 37.0 ^\circ west of north. How much work must be done on the crate to change its velocity to 5.49 m/s in a direction 63.0 ^\circ south of east?

    asked by Colton on February 19, 2012
  88. biology

    A tall pea plants bearing violet flowers is crossed withshort pea plants bearing white flowers .work out the f1 &f2 generations.give f2 ratio

    asked by thanvi on January 15, 2016
  89. Econometrics

    If the price of 1 pound of cereals is $10 and the price of a sword is $100, what is the wage rate paid to Hobbits in the Shire? How many Hobbits work in the cereal sector? In sword sector?

    asked by Joy on October 4, 2013
  90. science

    A weight machine _____. A.decreases the amount of input force required B.increases the input distance C.changes the direction of the input force D.reduces the amount of input work i think it is C please help me

    asked by Joseph on August 29, 2018
  91. physics

    Object 1 has a velocity of 3m/s and a mass of 5kg. Object 2 also has a mass of 5kg but isn't moving. Object 1 collides with Object 2 and they move off together. Work out their speed using the principle of conservation of momentum.

    asked by help me on March 3, 2015
  92. Chemistry

    At standard temperature, a gas has a volume of 275mL. The temperature is then increased to 130. Celcius, and the pressure is held constant. What is the new volume? How do I work this? v1 = 275mL t1 = 130. C or 403K v2=??? t2 = ??? Can someone help me

    asked by Chopsticks on March 19, 2009
  93. Physics. Pleaseee helpppp

    Four electrons are located at the corners of a square 10.0nm on a side, with an alpha particle at its midpoint. How much work is needed to move the alpha particle to the midpoint of one of the sides of the square?

    asked by Nanny on August 27, 2016
  94. physics

    A neighbor pushes a lawn mower on a lawn that is level with a force of 230 Newtons. If 45% of this force is directed downward, how much work is done by the neighbor in pushing the mower 8 meters?

    asked by roshna on December 2, 2011
  95. English Research

    Thesis and Topic for paper on Led Zeppelin-- Does this work for a thesis:Although some People do not recognize them as the best band, nevertheless, Led Zeppelin is among the most notable because of their many musical accomplishments What would be a good

    asked by M on October 30, 2008
  96. Physics

    If you drop a 1.0 kg weight from a height of 1.0 m, how many joules of kinetic energy will it have when it reaches the ground? Can I use the equation for work: W = F*s to find the kinetic energy? Or would I have to find the velocity of the weight as it

    asked by Kyle on October 10, 2011
  97. reading

    if you had ever read a nancy drew book you know that there is always a mystery to be solved . bess and goerge always tag along .so now i am almost done with the whole series .do you have any suggestions on another series that i can read because i am a book

    asked by sam on March 25, 2008
  98. math 2 questions this time

    Find the area of the parallelogram. A height of 8 and a base of 24 then there is a another number I think its length but its 8 and im confused because its B*H for parallelogram sooo yea can someone help me and show me how. thanks. what is the surface area

    asked by LOVE PHINES AND FERB on April 3, 2016
  99. AQA Mechanics (M1), Statics and forces, please hel

    A particle of weight W is attached by a light inextensible string of length a to a point A on a verticle wall. The particle is supported in equilbrium by a light rigid strut of length b attached to a point B on the wall at a distance a vertically below A.

    asked by Tony on April 1, 2012
  100. Chemistry

    When a 2.5 mol of sugar (C12H22O11) are added to a certain amount of water the boiling point is raised by 1 Celsius degree. If 2.5 mol of aluminum nitrate is added to the same amount of water, by how much will the boiling point be changed? Show all

    asked by Eolhc123 on May 8, 2018

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