# 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

91,718 questions, page 227
1. ## motion analysis

Using the information below estimate the time required to analyse the data collected using the two motion analysis systems when there are 10 markers on the subject and the data is collected for 100 frames. Cinematography system 2 seconds per marker 5

asked by arzam on June 14, 2014
2. ## motion analysis

Using the information below estimate the time required to analyse the data collected using the two motion analysis systems when there are 10 markers on the subject and the data is collected for 100 frames. Cinematography system 2 seconds per marker 5

asked by arzam on June 15, 2014
3. ## motion measurements

Using the information below estimate the time required to analyse the data collected using the two motion analysis systems when there are 10 markers on the subject and the data is collected for 100 frames. Cinematography system 2 seconds per marker 5

asked by arzam on June 15, 2014
4. ## science

How do i calculate how much time it takes to heat water? All I know is the power supplied and the energy required. Thanks power= energy/time Power*time= energy you know the energy, you know the power, solve for time. time(in seconds)=

asked by barbara on January 16, 2007
5. ## Writing

for this profile story i'm doing one of my sentences was Originally from central Indiana, Gilbert did not grow up in a diverse neighborhood, nor did she attend a diverse school system. My teacher told me to elaborate on when I say diverse.. Is this better?

asked by Blaze on April 9, 2013
6. ## Geometry

Prove that a line that divides two sides of a triangle proportionally is parallel to the third side. Be sure to create a name the appropriate geometric figures. Paul walks 25 feet away from his house and places a mirror on the ground. He backs 5 feet away

asked by Help!! on January 8, 2016
7. ## communications

This is homework for communications class, and I'm not sure what the hell I need to do. I need to get a good grade, because I'm not doing to well. Please help. Here is what to do. Using I language Practice using I language. Use it at work, school, home

asked by marie on April 11, 2010
8. ## english

How does Kurt Vonnegut address the concept of equality differently in “Harrison Bergeron” than Martin Luther King Jr. does in “Letter from Birmingham Jail”? What relationship does Vonnegut’s story show between equality and personal

asked by Sara on January 22, 2015
9. ## Physics

A flat mirror that is 0.85m tall is attached to a wall so that its upper edge is 1.7m above the floor. Use the law of reflection and a ray diagram to determine if this mirror will show a person who is 1.7m tall his or her complete reflection. I don't know

asked by Ashley on October 1, 2017
10. ## Math

Show each step to show how to verify the identity. cos(x + y) + cos(x - y) = 2 cos x cos y

asked by Toni on January 29, 2015
11. ## Math

Andy and William work together to build a toy house. It will take William 6 hours and Andy 4 hours, or William 10 hours and Andy 2 hours to finiah their work. If William works alone how many hours will it take to finish his work?

asked by Patti on September 28, 2010
12. ## physics

Two pieces of metal (A and B) are identical in every way, except that A has a much larger thermal expansion coefficient. If equal amounts of heat are added to both pieces of metal, which metal does more work on its surroundings? 1. A 2. B 3. They do the

asked by physicshelp on January 13, 2013
13. ## statistics

suppose you just received a shipment of 13 tvs. 3 of them are defective. if 2 tvs are randomly selected compute the probability that both tvs work and what is the probability at least one doesn't work? answer as a fraction in simplified form

asked by kerri on November 9, 2011
14. ## Economics

6. Show the effect of each of the following events on the market for labor in the computer manufacturing industry. Use graphs. a. Congress buys personal computers for all American college students. Wouldn't the demand curve shift to the right while the

asked by Mariah on December 4, 2006
15. ## Art

This is the other paragraph I urgently need you to check. Thank you very much, Writeacher. 1)I hope that in the future the consumerist societies will be defeated and that with the money, or better, with the resources that we put away we will help people

asked by John on May 26, 2012
16. ## Chem

Help! I'm not suppose to react Iron Chloride with Silver Nitrate in order to get Iron nitrate. If i'm suppose to keep one of the above ingredients and obtain a pure dry sample, what should i do? I don't know the question. Why are you not supposed to react

asked by kelly on September 8, 2006
17. ## Chemistry

1. A solution is prepared such that it is 0.45 M in formic acid and 0.35 M in sodium formate. a) Where is this mixture located on a titration curve: before the buffer point, at the buffer point, or after the buffer point? b) Use the Henderson-Hasselbach to

asked by Arthur T on July 15, 2014
18. ## Physics

please show me how to solve this 1. A bus travels 280 km south along a straight path with an average velocity of 88 km/h to the south. the bus stops for 24 min. then, it travels 210 km south with an average velocity of 75 km/h to the south a. how long does

asked by y912f on January 30, 2009
19. ## AP Statistics

Commercials Suppose that a commercial is run once on television, once on the radio, and once in a newspaper. The advertising agency believes that any potential consumer has a 20% chance of seeing the add on television, a 20% chance of hearing it on the

asked by Lyndsey Horton on March 23, 2008
20. ## Chemistry

PART 1 >>Trial 1 Reactant Solution A 10 ml I^-, 5.0 ml S2O3^2- Reactant Solution B 10 ml S2O8^2-, 1 ml starch time to react = 10 seconds >>Trial 2 Reactant Solution A 10 ml I^-, 5.0 ml S2O3^2- Reactant Solution B 5 ml S2O8^2-, 1 ml starch time to react =

asked by Dan on February 24, 2016
21. ## Physics

Can someone please help me? The brakes of a truck cause it to slow down by applying a retarding force of 2.60 103 N to the truck over a distance of 930 m. What is the magnitude of the work done by this force on the truck? Is the work positive or negative?

asked by Phil on March 15, 2011
22. ## math word problem

Simon arrived at work at 8:15am anf left work at 10:30pm. If Simon gets paid by the hour at a rate of \$10 and time and 1/2 for any hours worked over 8 in a day, how much did Simon get paid?

asked by .... on March 3, 2009
23. ## PHYSICS

(1 pt) An aricraft carrier has a mass of 8.9 x10^7kg and can cruise at 55 km/h. a) What is the work required to stop it? J b) What constant force could stop it in 6 km? N a) If only half of the work required to stop it is done, what is its final speed?

asked by applebottom on November 21, 2010
24. ## Movies

In the movie Zootopia, the character Judy Hopps has which police duty on her first day of work? traffic control parking duty desk work detective I Think its Parking Duty

asked by mustlemar on December 19, 2017
25. ## Physics

First, I'm sorry for asking a lot of questions, however I don't know how to solve any of these problems. Can you please help me by telling me how I should solve it and what formulas should be used? I don't want the actual answers but how to solve these

asked by Stephanie on December 9, 2018
26. ## math

One phone plan charges a \$20 monthly fee and \$0.08 per minute on every phone call made. Another phone plan charges a \$12 monthly fee and \$0.12 per minute on each call. After how many minutes is the charge the same for both plans? A.60 minutes B.90 minutes

asked by Johnny on July 14, 2014
27. ## HIrsch funnel

From part of an earlier question: My question: D. What filtration device would you use to isolate 2.0 g of crystals from about 50 mL of solution after performing a crystallization? My answer was a Buchner funnel Your answer: It would need to be a SMALL

asked by Sheryl on October 1, 2006
28. ## law

what does this mean? It takes a village to raise a child What impact does this have on juvenile justice system? http://en.wikipedia.org/wiki/It_Takes_A_Village You can find more references if you Google "it takes a village" (including the quotation marks).

asked by kln20 on March 25, 2007
29. ## Chemistry

Can someone check my answer and let me know me if the are right or wrong. 1. What is the maximum amount of KCl that can dissolve in 600 g of water? (The solubility of KCl is 34 g/100 g H₂O at 20°C.) * 34 g 204 g ***** 2040 g 3. (1 point) If the

asked by Lydia on March 13, 2017
30. ## physics

A 1.3- block of ice is initially at a temperature of -3.5. If 6.6×105 of heat are added to the ice, what is the final temperature of the system? Find the amount of ice, if any, that remains. Suppose the amount of heat added to the ice block is doubled. By

asked by katelyn on November 22, 2010
31. ## chemistry

KHP is a monoprotic acid with a molar mass of 204.22 g/mol. The titration data are as following. The average concentration of NaOH solution is M. 1 2 3 mass of KHP (g) 2.789 2.543 2.612 vol NaOH used (mL) 27.77 23.22 27.12 You didn't ask a question but I

asked by jared on May 16, 2007
32. ## Pre-Algebra

Find each product or Quotient. Express using exponents. 1. The quotient of a to the 8th power and a to the 8th power? a 2. The quotient of -x to the 5th power and -x? -x to the 4th power 3. (15/5)(n to the 9th power/ n)? 3n go the 10th power Neutral water

asked by TiffanyJ on January 18, 2011
33. ## chemistry

Lab: Determining Ka of Acetic Acid Purpose: The purpose of this experiment is to determine the molar concentration of a sample of acetic acid and to calculate its Ka. Materials: phenolphthalein 125 mL Erlenmeyer flask 25 mL pipet and bulb pH metre acetic

asked by Nick on April 8, 2008
34. ## Spanish

Schools in Mexico _______. a. have no computers b. have 10 to 12 computers c. are working to increase the student/computer ratio*** d. have plenty of computers because they work with large computer companies Just checking my work:) *** - My Answer Thanks,

asked by Kaai97 on November 9, 2015
35. ## Physics

A box slides along a rough floor with initial kinetic energy of 7 J. A person pushes on the box, in the same direction as its velocity doing 25 J of work. The velocity of the box is doubled. Find the magnitude of the work done by friction.

asked by James on June 10, 2015
36. ## maths

A fruit drink is made by mixing juice and lemonade in the ratio : 1 : 4 (juice : lemonade) Juice costs £6.00 per litre. Lemonade costs 50p per litre. a) show that 1 litre of the fruit drink costs £1.60 to make. b) The fruit drink is sold for £2 a litre.

37. ## Math

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. Drawings not to scale On Quadrilateral A B C D, side A B measures 10 units and side A D measures 6 units. Angle D measures 86 degrees and Angle C

asked by panda girl on March 26, 2019
38. ## Spanish Persausive Essay

Identify a problem that involves the Spanish language in some way. Your choice! (Example: Unfairness/bias issues in highstakes testing for ESL students) Propose a solution to the problem. And then support and develope your solution into a persuasive

asked by Holly on March 15, 2009
39. ## Chemistry

If 0.125 L of a 0.100 M solution of Ba(OH02 are mixed with 0.200 L of a 0.0750 M solution of H3PO4, the following reaction takes place. 3Ba(OH)2 + 2H3PO4 ---> Ba3(PO4)2 + 6H2O What mass of barium phosphate is formed? I got 2.51 g Ba3(PO4)2, is that

asked by Ana on April 29, 2010
40. ## chemistry

a solution is made by dissolving 25 g NaCl in enough water to make 1.0 L solution. Assume that density of the solution is 1.0 g/mL. calculate the mass percent, molarity, molality, and mole fraction of NaCl. help please 25g/58.44g NaCl=.428 mol 1000 grams

asked by an on January 6, 2015
41. ## MATH

Graph is a complete graph -it called K6- IT HAS 6 VETICES. also, every vertex is connected to every other vertex. a) how many possible Hamilton circuits ( say starting from A) including reversals, does the graph have? b) if we were to use the Brute Force

asked by IM on December 11, 2016
42. ## Math

Raul and Rosie are playing a guessing game. Rosie tells Raul that she has 62 miniature flags in her bag, all green or red. Rosie then tells Raul that if she doubled the green flags and halved the red flags, she would have 88 miniature flags in her bag. How

43. ## Physics

A factory worker pushes a 32.0 kg crate a distance of 4.9 m along a level floor at constant velocity by pushing downward at an angle of 32 ∘ below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.25. What magnitude of

asked by octavio on October 11, 2015
44. ## Intermediate Accounting

Pan Erickson Construction Company changed from the completed-contract to the percentage-of-compleltion method of accounting for long-term construction contracts during 2008. For tax purposes, the company employs the completed-contract method and will

asked by Jeniffer on January 31, 2010
45. ## Literature

Is my prose poem alright? Every morning, my father goes to work and us to school because we have the liberty to do that. Everywhere, all types of people are working as one and having a fine time. Back in the day, some people weren't allowed to work and the

asked by mysterychicken on November 30, 2009
46. ## HRM

What considerations should managers and employees be aware of while in positive discipline procedures? When using this guide, consideration should always be given to the nature of the incident, the frequency of the violation, and the employee’s overall

asked by Anonymous on February 22, 2009
47. ## English

This is the title of my ESSAY paper: United States vs. Denmark: Which health system works better for the citizens of the nations? I need to put this into a title for my paper (

asked by rosa on June 6, 2011
48. ## math word problem

Andy and William work together to build a toy house. It will take William 5 hours and Andy 4 hours, or William 10 hours and Andy 2 hours to finish their work. If William works alone, how many hours will it take to finish his work? 5 10 15 20 Explain how

asked by M.A. on September 28, 2010
49. ## Algebra 1

Samantha Jones has a job offer in which she will receive #600 per month plus a commission of 2% of the total price of the cars she sells. At her current job, she receives \$1000 per month plus a commission of 1.5% of her total sales. a. What is the total

asked by Annon. on January 13, 2012
50. ## Chemistry

A student began adding titrant to the acid solution, but stopped when she suddenly realized that she forgot to add the 3 drops of phenolphthalein. When she did, the solution immediately turned dark red! What can the student do to correct this error and

asked by Matt on October 27, 2013
51. ## CHEMISTRY ( I NEED HELP AGAIN QUICK )

I've stuck with these two stoich questions A mixture is prepared by adding 20 ml of 0.200 M Na3PO4 to 30 ml of 0.150 Ca(NO3)2. What weight of calcium phospate will be formed? and last question would be, How many milliliters of 0.30 M NiCl2 solution are

asked by FARRELL on May 21, 2015
52. ## CHEM

I know I posted this question again but no one is really helping me. Can someone please help me as soon as possible. In a constant-pressure calorimeter, 60.0 mL of 0.340 M Ba(OH)2 was added to 60.0 mL of 0.680 M HCl. The reaction caused the temperature of

asked by Akle on February 10, 2012
53. ## Chemistry

A buffer solution is made as followed: i)adding 13.50mL of 0.200mol/L sodium hydroxide to 50.00mL of 0.100mol/L propanoic acid. ii)diluting the resulted buffer into a total volume of 100.00mL Using IRE-C tables (if possible) calculate: a)The pH of the

asked by Sara on April 26, 2010
54. ## math (long div.)

please help me solve long division :( 1.)8 divided by 6984 (0.00114548) 2.)48 divided by 7584 (0.00632911) 3.)35 divided by 19933 (0.00175588) I know the answer to all of them but I don't know how to solve it the long way .

asked by ty on August 29, 2013
55. ## Algebra

I am having issues with factoring. I am trying to check my work using a TI84 Plus calculator but I don't know how to plug in a problem to check its factoring. Can anyone help? for example 44y^3+55y^2-11xy how can I go about plugging that in to check my

asked by Christopher on March 27, 2014
56. ## Physics

I have two questions? 1-What do we call the quantity force x distance, and what quantity does it change? **The quantity is called work and it changes energy** 2-In what unit is energy measured? **joule?? isn't it the same as work?**

asked by Sarah on December 9, 2009
57. ## Calc.

Let h(x)=16-4x-(x^3) Find g(96). My work: 96= 16-4x-(x^3) (-x^3)-4x-80=0 Using the rational roots theorm, I found that x=-4 so h(-4)=96, therefore g(96)=-4. Find g'(96). My work: g'(96)= 1/(dh/dx at x=-4) 1/((-3(-4)^2)-4)= -1/52 Does this look ok? Also, my

asked by Joshua on April 14, 2009
58. ## Math {ASAP}

Alex gets to work by biking to the train station, riding the train, then walking. His entire trip to work is 15 miles. If he bikes 1/3 of the way and walks 1/5 of the way, how many miles did he travel on the train?

asked by Frances Salome on October 30, 2012
59. ## physics

(a) How much waste heat is produced by an electrical power station that uses 1.05 multiplied by 1014 J of heat input with an efficiency of 40.0%? (b) What is the ratio of waste heat to work output? (c) How much work is done?

asked by Eric on July 24, 2013
60. ## physics

a particle is subject to a force fx that varies with a position shown in figure P 7.15.find the work done by the force on the particle as it moves (a)from x=0 to x=5.00,(b)from 5.00m to 10.0 m,(c)from x=10.0 to x=15.0 m.(d) what is the total work done by

asked by Anonymous on February 6, 2013
61. ## chemistry

The best means of personal protection from radiation for emergency responders is the implementation of three basic principles: time, distance and shielding. Please show your work when answering the following questions: a. Using the inverse square law of

asked by Brenda on January 16, 2014
62. ## algebra

I have beans that sell for \$9 per pound and \$12 per pound, they need to be mixed to create 100lbs of mixture that will sell for \$11.25 per pound . How much of each type of bean should be used in the mixture? X=#lbs beans that sell for \$9.00/lb. Y=#lbs

asked by Tony on March 20, 2007
63. ## LAW

1. The impeachment exception to the exclusionary rules allows for illegally obtained evidence to be used: A. in serious felony cases. B. to show that a witness’ testimony may be false. C. to show the defendant possessed illegal contraband. D. in cases

asked by Amy on December 13, 2013
64. ## Chemistry

Cobalt was used as an internal standard to analyze a sample of titanium with atomic absorption spectroscopy. A mixture was prepared by combining a 4.00 mL Ti solution of unknown concentration with 3.00 mL of a 11.7 micrograms/mL solution of Co. The atomic

asked by ScienceGeek on June 4, 2013

Cobalt was used as an internal standard to analyze a sample of titanium with atomic absorption spectroscopy. A mixture was prepared by combining a 4.00 mL Ti solution of unknown concentration with 3.00 mL of a 11.7 micrograms/mL solution of Co. The atomic

asked by ScienceGeek on June 5, 2013
66. ## CHEMISTRY

Cobalt was used as an internal standard to analyze a sample of titanium with atomic absorption spectroscopy. A mixture was prepared by combining a 4.00 mL Ti solution of unknown concentration with 3.00 mL of a 11.7 micrograms/mL solution of Co. The atomic

asked by sciencegeek on June 4, 2013
67. ## chem -repost for bobpursley

Posted by polkadot on Friday, April 8, 2011 at 8:46pm. Can someone please help me by explaining and correcting me? 1) A 0.057M solution of a weak acid has a pH of 4.93. Determine the ionization constant, Ka, of the acid. a) 2.1 x 10^-4 b) 2.4 x 10^-9 c)

68. ## Science

Why do scientists study images made with parts of the electromagnetic spectrum other than visible light? A)These images are the only way to observe galaxies beyond our own. B)These images reveal information that visible light does not show. C)These images

asked by Cam on April 4, 2016

this is the question : A CD has a diameter of 12.0 cm and a mass of 15.8 g. The motor in a CD player causes the disk, initially at rest, to spin. When in operation, the CD spins in such a way that the laser scans the tracks at a constant tangential

asked by Trace on January 19, 2011
70. ## FIU

(1)You are preparing a budget for the month of January and are trying to estimate maintenance cost for the month. The maintenance cost is an overhead cost that is categorized as being mixed – that is it has both a fixed and a variable component. To

asked by omar brown on March 8, 2011
71. ## Math

How many real number solutions does the equation have? 0 = - 4x^2 + 7x -8 a. no solution***** b. one solution c. two solutions d. infinitely many solutions

asked by Anonymous on March 26, 2018
72. ## math115

There are 42 milliliters (mL) of acid in 200 mL of a solution of acid and water. What percent of the solution is acid?

asked by Bstone on March 28, 2010
73. ## chemistry

To what volume should you dilute 30 mL H2SO4 of a 10.0 M H2SO4 solution to obtain a 0.140 M H2SO4 solution?

asked by Judy on February 6, 2010
74. ## math

An 800 g solution of acid and water contains 128 g of acid. What percent of the solution is acid?

asked by Brenda on January 30, 2008
75. ## chemistry

To what volume should you dilute 30 mL H2SO4 of a 10.0 M H2SO4 solution to obtain a 0.140 M H2SO4 solution?

asked by Judy on February 6, 2010
76. ## Math - Alg

How much pure acid must be added to a 30% acid solution to make a 60L solution which is 50% acid?

asked by Brittany Jones on February 6, 2014
77. ## math

Mary has a solution that is 60% alcohol and another that is 20% alcohol. How much of each should she use to make 100 milliliters of a solution that is 52% alcohol?

asked by emmet on March 21, 2010
78. ## Math - Alg

How much pure acid must be added to a 30% acid solution to make a 60L solution which is 50% acid?

asked by McKenna Louise on February 5, 2014
79. ## Physics

You have a solution that contains Ca2+ ions and another that contains Na+ ions. How would adding a solution that contains CO2-3 ions enable you to tell which is which?

asked by Channing on March 15, 2015
80. ## algebra

charlie has 80 ml of a 15% acid solution how much of a 20% acid slolution must be added to create a solution that is 18% acid.

asked by steve on February 22, 2010
81. ## algebra

How many kilograms of pure alcohol must be added to 40 kg of a 70% alcohol solution to produce an 85% alcohol solution?

asked by TinaG on May 24, 2010
82. ## Chemistry

I just need help with these three 1.Cell respiration glucose is reacted wth oxygen in body to produce carbon dioxide and water how many liters of carbon dioxide would be produced if 90.0 g of glucose completely reacts with oxygen C6H12O6(s)+ 6O2(g) ->

asked by Ben on April 22, 2015
83. ## Chemistry

Q) Calculate the new molarity of a 35mL sample of 0.450 M CaCl2 solution that is diluted with enough water to make 250 mL of solution. A) M1V1 = M2V2 M1 = 0.450 M2 = ? V1 = 0.035 L V2 = 0.250 L M2 = M1 X V1/V2 0.450 X (0.035L/0.250L) = 0.063 Did I set this

asked by Kishwa on April 1, 2013
84. ## Thermochemistry

When 1.477 mole of an inorganic salt were dissolved in 1.00 L of water in a constant pressure solution calorimeter, the temperature of the calorimeter changed from 25.00oC to 24.40 oC. The total heat capacity of the calorimeter including all its contents

asked by Douglas on June 12, 2009
85. ## chemistry

The ΔH for the solution process when solid sodium hydroxide dissolves in water is 44.4 kJ/mol. When a 13.9 g sample of NaOH dissolves in 250.0 g of water in a coffee-cup calorimeter, the temperature increases from 23.0°C to ________°C. Assume that the

asked by Kamila on March 21, 2011
86. ## chemistry

What is the pH of a buffer solution that is made by adding 21.0 grams of sodium fluoride to 1.00 Liter of 0.15M hydrofluoric acid? (see the Table above for the Ka of hydrofluoric acid; calculate the pH to 2 decimal places) hint: you will have to find the

asked by dennis on June 16, 2013
87. ## chemistry

What is the pH of a buffer solution that is made by adding 21.0 grams of sodium fluoride to 1.00 Liter of 0.15M hydrofluoric acid? (see the Table above for the Ka of hydrofluoric acid; calculate the pH to 2 decimal places) hint: you will have to find the

asked by Dennis on June 16, 2013
88. ## chemistry

A piece of aluminium weighing 2.7 gm is heated with 75 ml of H2SO4(specific gravity 1.18 containing 24.7 percent H2SO4 by weight.)After the metal is carefully dissolved,the solution is dissolved to 400ml.Calculate tne molarity of the free H2SO4 in the

asked by Anonymous on July 9, 2013
89. ## Chemistry

What is the pH of a buffer solution that is made by adding 21.0 grams of sodium fluoride to 1.00 Liter of 0.15M hydrofluoric acid? (see the Table above for the Ka of hydrofluoric acid; calculate the pH to 2 decimal places) hint: you will have to find the

asked by D.J. on June 17, 2013
90. ## English Research Paper

I am writing a English research paper and need to know if "Taser" is capitalized or not. Some places show it capitalized and some show it not. Also is it 'taser-use" or 'taser use" or "Taser-use" or Taser use ? Thanks.

asked by Suzi Q on April 21, 2008
91. ## Chemistry

If a solution containing 52.044 g of mercury(II) chlorate is allowed to react completely with a solution containing 15.488 g of sodium sulfate, how many grams of solid precipitate will be formed? How many grams of the reactant in excess will remain after

asked by Chelsea on October 13, 2013
92. ## Social Studies

1.Diversity most closely means (1 point) A. Sharing cultural traits and practices with others. B. Making up a whole of many different parts. ** C. being a member of a small ethnic group. D. Having many similar regions next to one other. 2. How does life in

93. ## Physics

1. How much work or energy (in J) does a 150 W light bulb convert to heat and light in 1.0 h? 2.The force of gravity on a box of apples is 98.0 N. How much work will you do (a) if you lift the box from the floor to a height of 1.2 m? (b if you carry the

asked by HanuP28O on October 28, 2012
94. ## Physics

A 50 g lunch pail is lifted up 500 m. If the work required to do this was 1450 J, what's the acceleration? W= mad 1450 = (0.05 kg)(a)(500m) 1450 = 250a 5.8 m/s^2 = a If a 750 g mass is accelerated at a rate of 11.0 m/s^2 for a distance of 3.0 m, how much

asked by Lucina on January 18, 2015
95. ## Physics

Suppose you have a system of two masses strung over a pulley. Mass 1 (6.5 kg) hangs on the right side of the pulley suspended over the ground at height 1 m. Mass 2 (2.2 kg) hangs over the left side of the pulley and rests on the ground. The pulley is a

asked by Jannia on April 22, 2016
96. ## Physics

A pendulum consists of a 2.6 kg stone swinging on a 4.5 m string of negligible mass. The stone has a speed of 7.9 m/s when it passes its lowest point. (a) What is the speed when the string is at 53 ¢ª to the vertical? (b) What is the greatest angle with

asked by Cody on October 25, 2012
97. ## Physics

A pendulum consists of a 2.1 kg stone swinging on a 3.6 m string of negligible mass. The stone has a speed of 7.9 m/s when it passes its lowest point. (a) What is the speed when the string is at 60° to the vertical? (b) What is the greatest angle with the

asked by Jake on November 7, 2014
98. ## Math Help!!

Two phone companies offer discount rates to students. The first company wants \$9.95 per month plus \$.10 per minute for long distance calls. The second company wants \$12.95 per month plus \$.08 per minute for long distance calls. Write a linear equation

asked by Julie on September 21, 2014
99. ## Math

Two phone companies offer discount rates to students. The first company wants \$9.95 per month plus \$.10 per minute for long distance calls. The second company wants \$12.95 per month plus \$.08 per minute for long distance calls. Write a linear equation

asked by Julie on September 20, 2014
100. ## Chemistry

If 0.250 moles of NaOH are dissolved in 125g of water, what is the %m/m of NaOH in this solution? I converted 0.250 mol to 10.0 g. Then using the equation mass solute/mass solution * 100 I came up with the final answer of 7.41 %m/m. Is that correct?

asked by Jen on April 29, 2008