# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,330 questions, page 724
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

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.

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,

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

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

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

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

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