1. Physics

    When 2.1x10^3 J of heat is added to 100.g of a substance, its temperature increases from 15 C to 40 C. What is the specific heat capacity of the substance? Answer is 8.4x10^2 but I need to see the work involved in how to solve the problem

    asked by Dorrito on December 8, 2011
  2. algebra

    Create your own number game using the rules of algebra and post it for your classmates to solve. Be sure to think about values that may not work. State whether your number game uses the skill of simplifying rational expressions

    asked by mike on October 7, 2008
  3. Physics

    A basketball player runs down the court, following the path indicated by the vectors A, B, and C in the figure. The magnitudes of these three vectors are: A = 12.0 m, B = 17.0 m, and C = 7.0 m. Let the +x-axis point to the right and the +y-axis point to

    asked by !!!! on September 11, 2011
  4. science

    4 gm of N aOH are present in 0.1dm3 solution have specific gravity 1.038 gm/ml. calculate: a. Molality of N aOH solution; b. Molarity of N aOH solution.

    asked by rohan on May 3, 2016
  5. chemistry

    What is the molarity of the following solutions? (a) 2.1 mol KCl in 1.7 L of solution 1 M (b) 1.04 mol H2SO4 in 335 mL of solution 2 M (c) 0.944 mol of ammonia in 215 mL of solution 3 M

    asked by Bobby on February 24, 2011
  6. Chemistry

    An aqueous solution of a monoprotic acid is prepared. This acid is known to have a pKa of 8.6. If the acid is 37.5% ionized when in solution, what is the pH of the solution? Not really sure where to start with this question? Thanks in advance

    asked by Jessica on April 14, 2015
  7. Thermodynamic

    A system contains 0.15 m3 of a gas at a pressure of 3.8 bar and 150 C. It is expanded adiabatically till the pressure falls to 1 bar. The gas is then heated at a constant pressure till its change in enthalpy is 70 kJ. Determine the total work done. Pl

    asked by Abdu on November 22, 2016
  8. Physics

    A 15 N wooden block is dragged for 15 meters across a wooden floor in 15 seconds... I'm given that the mew (the greek leter uk) or however u say it is .2 I have to make a free body diagram I sloved and got Fn = 15 N mg = -15 N Ff = -3 N How do I solve for

    asked by Physics on March 18, 2009
  9. math

    please anwer these: 1) how can i multiply and divide polynomials containing radicals? 2) how can i solve radical equations? 3) how can i solve qudratic equations by factoring ? 4) how can i solve quadratic equations graphically ? thank you !!!!!

    asked by chen on August 13, 2014
  10. Chemistry - Equilibrium

    You have an unknown concentration of ammonia. When you add 15.0mL of a 0.400 M HCl solution to 50.0mL of the ammonia solution, the pH of the solution becomes 8.75. What is the concentration of the original ammonia solution? [Kb (NH3) = 1.8 x 10^-5]

    asked by Martha on April 25, 2012
  11. science

    A system contains 0.15 m3 of a gas at a pressure of 3.8 bar and 150 C. It is expanded adiabatically till the pressure falls to 1 bar. The gas is then heated at a constant pressure till its change in enthalpy is 70 kJ. Determine the total work done. 

    asked by seeoo on November 26, 2016
  12. science

    A system contains 0.15 m3 of a gas at a pressure of 3.8 bar and 150 C. It is expanded adiabatically till the pressure falls to 1 bar. The gas is then heated at a constant pressure till its change in enthalpy is 70 kJ. Determine the total work done. 

    asked by seeoo on November 25, 2016
  13. Technology

    Which of the following statements is true about a plumbing system? a. The potable water system carries used water away from the building b. The potable water system carries water that is safe for drinking c. All potable water that enters a building feeds

    asked by y912f on January 22, 2010
  14. chem30

    what is the molar enthalpy of combustion for magnesium? calimetry experiment results 100.0ml of HCl with 0.31g of Mg ribbon temp before ribbon added 23degrees and after ribbon added 37degrees. Need to show work so I understand. q=mcdeltaT

    asked by redeye on March 7, 2013
  15. intermediate algebra

    Essay.Show work.The area of a rectangular swimming pool is given by 3x^2+11x+6ft^2.One side lenght of the pool is given by 3x+2ft.What is the algebraic expression for the other side of the pool.Simplify,an include correct units as part of your answer

    asked by Lueshelle on April 12, 2012
  16. Physics

    A 54.0-g Super Ball traveling at 29.0 m/s bounces off a brick wall and rebounds at 18.0 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 4.00 ms, what is the magnitude of the average acceleration of the ball during

    asked by Grant on September 2, 2014
  17. Integrated science

    An insect inside a bus flies from the back toward the front of the bus at 3m/h. The bus is moving in a stright line at 40m/h. What is the speed of the insect? Show you work. I was woundering if someone could help me find the math for this problem? But I

    asked by John on September 23, 2007
  18. Math Help

    Hi! Okay so we just learned this last week and I completely lost on what to do. These are some warm up problems we did in class but I still don't know how to do them? Can someone help me? Thanks! :) Directions: Verify the idenity for each of the problems.

    asked by Stacy on January 20, 2015
  19. physics

    A crate of mass 50kg is pulled up a rough inclined plane ,inclined at an angle of 60 degree to the horizontal.determine the total work done in moving the crate to the top of the inclined 200 meter hight.(show workin).

    asked by Julius on February 25, 2013
  20. 4th grade math

    solve the equation. check the solution 1. a divided by 7= 20 2. d divided by 2=8 3. c divided by 3=15

    asked by mythreyee on November 14, 2013
  21. PHYSICS

    An irregularly shaped plastic plate with uniform thickness and density (mass per unit volume) is to be rotated around an axle that is perpendicular to the plate face and through point O. The rotational inertia of the plate about that axle is measured with

    asked by Charlene on March 24, 2007
  22. Science 7R (help!!!!)

    I have this worksheet for science tonight for homework and I really need help. The title of it is How Living Things Are Organzied. 1. A smallest unit of stucture and function in a living thing is called a(n)

    asked by Laruen on December 8, 2011
  23. Physics

    Wrote the name and subject bad in the other post, sry:: Hello, this is the last question that I can't seem to be able to solve: 1. Jenny (75 kg) goes on a ski trip. She goes down a slope that's inclined at 15*. The drag coefficient of Jenny is 0.300, the

    asked by Tom on January 27, 2012
  24. physics

    anyone who knows the answer to this question please show your work. drwls i know i posted this queestion before but you didn't reply to my comment. Your friend has climbed a tree to a height of 6.00 m. You throw a ball vertically up to her and it is

    asked by sabeen on December 21, 2010
  25. chemistry

    Calculate the molecular formula of nicotine (CxHyNz, xyz being unknown)if 4.38 mg of this compound burns to form 11.9 mg of carbon dioxide and 3.41mg of water, and 3.62 g of nicotine changes the freezing point of 73.4g of water by .563C. Show all work. I

    asked by Anonymous on February 11, 2010
  26. Geometry

    A lighthouse keeper in his observation tower 120 feet above the water sees a pontoon airplane and a small fishing boat. If the plane is directly above the boat, how far above sea level is the plane flying, rounded to the nearest foot? Be sure to show your

    asked by Jackie on March 28, 2014
  27. Physics...help please!

    An artillery shells is moving on a parabolic trayectory, when it explodes in midair. The shell chatters into a very large number of fragments. Which of the following statements is true? (Select all that apply.) A) A center of mass of the system of

    asked by Celine on March 31, 2011
  28. Physics (please help!!!!)

    An artillery shells is moving on a parabolic trayectory, when it explodes in midair. The shell chatters into a very large number of fragments. Which of the following statements is true? (Select all that apply.) A) A center of mass of the system of

    asked by Celine on April 1, 2011
  29. Physics

    An artillery shells is moving on a parabolic trayectory, when it explodes in midair. The shell chatters into a very large number of fragments. Which of the following statements is true? (Select all that apply.) A) A center of mass of the system of

    asked by Celine on April 1, 2011
  30. Physics...help please!

    An artillery shells is moving on a parabolic trayectory, when it explodes in midair. The shell chatters into a very large number of fragments. Which of the following statements is true? (Select all that apply.) A) A center of mass of the system of

    asked by Celine on April 1, 2011
  31. Physics

    A single conservative force acts on a 5.00 kg particle. The equation Fx = (2x + 4) N describes this force, where x is in meters. As the particle moves along the x axis from x = 1.40 m to x = 5.80 m, calculate the following. (a) the work done by this force

    asked by ucieng on February 6, 2010
  32. Chemistry

    How many mL of SCN^-1 and water to put in a 10 mL solution with 5 mL of Fe^3+ already in it?... We're finding those values to make standard solutions of 0.00 mM FeSCN^2+ 0.020 " 0.040 " 0.060 " 0.080 " 0.100 " I know that you have to use M1*V1=M2*V2,but

    asked by Savanna on February 1, 2017
  33. college chemistry

    HIO3 + FeI2 + HCl --> FeCl3 + ICl (in acidic solution) Show and label the two balanced half-reactions (oxidation and reduction). Add H2Os, H+s or OH-s as needed. I just wanted to know if the answer I got is correct 2FeI2 +6HCl +Cl +HIO3-->6FeCl3 +ICl +3H20

    asked by jillian on October 25, 2010
  34. Precalc

    I have a couple questions, I need to know how to solve these type of problems. X^2 -4< X + 16 5/n+2 - 5/n = 2/3n 2X^3-x^2-6X + 1/ X^2 + 5x - 8 1) rearragne the terms to get x^2-x-20

    asked by <3 A on June 14, 2007
  35. Chemistry

    In a solution of copper(II) chloride, the following equilibrium exists: CuCl42-(aq) (dark green) + 4H2O(l) Cu(H2O)42+(aq)(blue) +4 Cl-(aq) Predict the shift in the equilibrium and draw a graph of concentration versus time for relevant reactants to

    asked by Mary on November 28, 2010
  36. Science

    Two particles with masses 3.1 kg and 6.6 kg are connected by a light rod of length 4 m. Find the moment of inertia of the system about an axis perpendicular to the rod and passing through: a) the midpoint of the rod; b) the center of mass of the system of

    asked by John on November 30, 2011
  37. Physics

    Two particles with masses 3.1 kg and 6.6 kg are connected by a light rod of length 4 m. Find the moment of inertia of the system about an axis perpendicular to the rod and passing through: a) the midpoint of the rod; b) the center of mass of the system of

    asked by kole on November 28, 2011
  38. Astrophysics

    If an eclipsing binary system has a period of 32 days, an orbital velocity of 153km/s, and an orbit that is nearly edge-on, what is the circumference of the orbit? The radius of the orbit? The mass of the system? I can't seem to find a starting point for

    asked by Sheena on July 19, 2010
  39. Algebra 2(check) cont..

    1)solve the inequality -3(r-11)+15>_9 my answer = r

    asked by erin on July 21, 2007
  40. trigonomentry help!!!

    if one of the root of the equation ax^2+bx+c=0 is four times the other show that 4b^2-25ac=0... help please show working plz

    asked by Philip on April 3, 2016
  41. algebra

    Can you show me how to figure out a scatter plot is about months and electricity bills can you show me a example Thanks

    asked by snow on March 15, 2014
  42. Progamming

    The Banking e-Teller system allows bank customers to perform ATM transactions from their cell phone. BET will allow customers to check balances, make remote capture deposits, and perform balance transfers to their checking or savings account. Balance

    asked by Ashlee on January 21, 2014
  43. Chemistry

    SHOW WORK A cylinder contains 36.5g of argon gas at a pressure of 8.20atm. The valve is opened and gas is allowed to escape until the pressure is reduced to 4.75atm at constant temperature. How many grams of argon escaped?

    asked by Caitlyn on December 4, 2013
  44. Chemistry

    A foundry releases 6.0 U.S. tons of gas into the atmosphere every day. The gas mixture contains 2.5% sulfur dioxide (SO subscript 2) by weight. How many pounds of sulfur dioxide are released in one week? Show all work needed.

    asked by Anne on January 5, 2012
  45. Algebra 1

    A nurse needs to set up the proper dosing for medicine. The boy weighs 44 lbs and needs to get 5mg/ kg. How many mg of medicine should he get per day. Hint- You need two ratios: 2.2 lbs per Kg and 5mg per Kg Think about what goes on top and the bottom to

    asked by Miss Miranda on March 6, 2014
  46. Physics

    An object of mass .550kg is lifted from the floor to a height of 3.5m at a constant speed. If the object is released from rest after it is lifted, what is its kinetic energy just before it hits the floor? What is its velocity? Show your work and units.

    asked by Tim on December 9, 2012
  47. Physics

    An electron traveling at 7.00 x 10^6 m/s enters and passes through a parallel plate capacitor. determine the electric field generated by the capacitor. note that the electron just clears the corner of the positive plate. PLEASE SHOW ALL WORK!!!

    asked by Collin on April 13, 2016
  48. math

    Kyle spent half of his weekly allowance playing arcade games. To earn more money his parents let him weed the garden for $6.55. What is Kyle’s weekly allowance if he ended with $11.01? Show all of your work. (1 pts) * a) $8.90 b) $8.91 c) $8.92 d) $8.93

    asked by teacher on November 30, 2018
  49. chemistry 1

    if 20.2g of zn react with and equal amount of magnesium chloride to form magnesium and zinc chloride[zn+mgcl2> mg+zncl2] a.what is the limiting reactant? b. how much magnesium will be produced? Here is the way to solve most of these stoichiometry problems.

    asked by sam on May 11, 2007
  50. ss

    1. Which of the following might a limited government be more likely to do than an unlimited government? A. build and maintain public roads B. protect citizens from attack C. operate public schools D. let citizens speak freely and protest 2. Which of the

    asked by ss on August 23, 2018
  51. calculus help plllllz

    if you go with the right substitution ∫[{(1-sin(x))/(1+sin(x))}{(2-sin(x))/(2+sin(x))}] dx plz show me solution

    asked by rapheal on September 26, 2016
  52. algebra

    Amistad starts selling tickets to basketball games. They sell 292 tickets to the last game of the season. An adult ticket costs $3. A student ticket costs $1. They collect $470.00 in ticket sales. Write and solve a system of equations to find the number of

    asked by Anonymous on February 7, 2012
  53. Math

    I am confused on this. Can anyone show me where to start on how to solve it? Given the cipher and function below, decode the following message: 14-2-21-9 10-20 7-22-15 Function: f(x)=2x-2 Cipher A=2, b=4, c=6, d=8, e=10, f=12, g=14, h=16, i=18 j=20, k=22,

    asked by Math on March 22, 2017
  54. math

    Michael has a total of $2000 on deposit with two saving institutions. One pays interest at the rate of 6% per year whereas the other pays interest at a rate of 8% per year. If Michael earned a total of $144 in interest during a single year, how much did he

    asked by SUBSTITUTION METHOD on May 16, 2011
  55. chemistry

    Solution A:50cm^3 of 1.0mol dm^-3 hydrochloric acid,HCl Solution B:10cm^3 of 2.0mol dm^-3 hydrochloric acid,HCl (a)Calculate the number of moles of hydrochloric acid,HCL in each solution. (b)Solution A and B are mixed together. (i)Calculate the number of

    asked by mandy on May 7, 2014
  56. Math

    Show that the sum of 3 consecutive odd integers is a multiple of 3? I'm not so sure on how to answer this question, can you please help and show me on how to find it?

    asked by Anonymous on September 18, 2016
  57. physics

    show that 1/sqrt(Msubscript 0 Esubscript 0)=C...I don't understand how to show this or what this question is asking..its for wave optics

    asked by Jessica on April 29, 2008
  58. chemistry

    1. Show the e- dot structure for CuCl2, I2 and H2O. State the bond type and name. Show charges where necessary.

    asked by lisa on January 8, 2012
  59. Help important

    I need to figure Thenlongest running theatre show of london......& name masterpiece of author of dat show

    asked by Emily on December 4, 2013
  60. Maths

    Show that (x + 1)(x – 3)(x – 4) = x3 – 6x2 + 5x + 12 I'm so sorry but I can't show any working for this as I don't have a clue how to factorise when there are no common letters and numbers? Thanks!

    asked by Maria on November 12, 2015
  61. physics

    the speed of sound in water is 1500m/s how far way from an under see rock show a,b,c diver be show that he can hear is an echo

    asked by tripuresh on February 28, 2013
  62. chemisstry

    1. Show the e- dot structure for CuCl2, I2 and H2O. State the bond type and name. Show charges where necessary.

    asked by lisa on January 8, 2012
  63. accounts

    1. On January 1, 2004 PEN PENNY received a Utility Bill from BEC for $10,000, the bill was due on February 28, 2004. (a) Show the entries on January 1, 2004 and February 28, 2004. 2. On March 1, 2004 PEN PENNY company borrowed $400,000 from the Royal Bank

    asked by jimmy on November 25, 2008
  64. Science

    It would be awesome if you can help me with this :) Two station astronauts each need to perform three 8-hour EVAs during their 13-day mission to repair a damaged solar panel that was impacted by a micrometeoroid on the space station. How much oxygen will

    asked by Sean on January 31, 2011
  65. Math 11

    I need help on this math problem. The width of a certain painting is 5cm less than twice the length. The length of the diagonal distance across the painting is 107cm. Find the length and width. Round your answer to 2 decimal places. Substitute: diagonal

    asked by Need Help on January 11, 2012
  66. CHEMISTRY

    At 63.5 degreesC, the vapour pressure of H2O is 23.3kPa and that of ethanol is 53.3kPa. A solution is made by mixing egual masses of H2O and C2H5OH. a. what is the mole fraction of ethanol in the solution? b. assuming ideal-solution behaviour, what is the

    asked by lulu78 on October 15, 2010
  67. PROGRAMMING

    Make a C program that accepts an integer value at the main method from the keyboard and in turn passes the value to a function that squares the number( multiplies is by itself) and to another function that cubes the number ( multiplies by itself twice).

    asked by ME-ANN on September 28, 2014
  68. IT

    Make a C program that accepts an integer value at the main method from the keyboard and in turn passes the value to a function that squares the number( multiplies is by itself) and to another function that cubes the number ( multiplies by itself twice).

    asked by Anonymous on September 28, 2014
  69. Chemistry

    A saturated solution is made by dissolving 0.325 g of a polypeptide (a substance formed by joining together in a chainlike fashion some number of amino acids) in water to give 1.37 L of solution. The solution has an osmotic pressure of 4.13 torr at 28 °C.

    asked by Luke on July 14, 2014
  70. chemistry

    State how you would prepare each solution: 1) 455g of a solution of C3H5(OH)3 in water in which the mole fraction of glycine is .250 2) 755g of 1.4 molality solution of napathalene C10H8 in benzene C6H6. My instructor told us to find the amount of grams in

    asked by Amid on January 28, 2014
  71. chemistry help

    If the standard calcium carbonate solution is 100 ppm and 25 mL of solution is used for the standardization, calculate the approximate volume of 2mM EDTA solution needed to reach the end point of the titration. I know to use M1V1=M2V2 but need help

    asked by paula on March 23, 2015
  72. Please help me solve

    How much heat (in Joules) is gained by the water when a chemical reaction takes place in 100.0 ml aqueous solution, has a temperature increase of 12.67°C and a specific heat capacity of 4.180 J/°Cg? [Hint: ignore any effects of the calorimeter and solve

    asked by Ashley on June 23, 2013
  73. chemistry

    How much heat (in Joules) is gained by the water when a chemical reaction takes place in 100.0 ml aqueous solution, has a temperature increase of 10.20°C and a specific heat capacity of 4.180 J/°Cg? [Hint: ignore any effects of the calorimeter and solve

    asked by shelle on March 31, 2014
  74. How do I solve for this??

    How much heat (in Joules) is gained by the water when a chemical reaction takes place in 100.0 ml aqueous solution, has a temperature increase of 12.67°C and a specific heat capacity of 4.180 J/°Cg? [Hint: ignore any effects of the calorimeter and solve

    asked by Ashley on June 24, 2013
  75. Chemistry

    7.0 ml of 6.0 M NaOH are diluted with water to a volume of 400 ml. You are asked to find the molarity of the resulting solution. The total number of moles of NaOH is not changed on dilution. Calulate the molarity. Work: (6)(.007)=(x)(.4) x=.105M Thanks for

    asked by Anonymous on April 19, 2007
  76. Chemistry

    Calculate the mass of Fe(OH)3 s) produced by mixing 50.0 mL of 0.153 M KOH (aq) and 25.0 mL of 0.255 M Fe(NO3)3 (aq), and the number of moles of the excess reactant remaining in solution. I got 0.00383 mol Fe(NO3)3 remaining. I don't know how to obtain the

    asked by Tiffany on October 29, 2015
  77. Physics

    Assume you have a rocket that requires a change in velocity of ¦¤V¡Ö9.6km/s . There are two options for the propulsion system --- 1. chemical and 2. electric --- each with a different specific impulse. Using the setting of g 0 =9.81m/s^2 to calculate

    asked by Janet on March 12, 2015
  78. Chemistry

    Use the balanced equation for the reaction of lithium oxide with water: Li2O(s) + H2O(g) --> 2LiOH(s) to determine how many grams of H2O can be removed from the air by 250g of Li2O. Show your step-by-step solution with unit conversions.

    asked by Jane on September 26, 2018
  79. chemistry

    the enthalpy change of a system is 1.25 x 10^5 J and the entropy change is 300 J/K. calculate the free energy change of the system at 290 K

    asked by blarkin on February 7, 2011
  80. Science

    In a new system of unit called star unit 1*kg=10kg,1m*=1km,1s*=1min. Convert 1J of energy in new system of unit.

    asked by Christina on June 17, 2018
  81. Cost Accounting

    What are the differences between job-cost and process-cost systems? When would it be appropriate to use each type of system? How does each system affect the cost of a product?

    asked by Angie on May 25, 2010
  82. Science Olympiad Examination

    Hello, Please give me some useful websites for the following subjects: Amphibians and Reptiles Bioprocess Reach for the stars(Astronomy) Disease Detectives Crave the wave Anatomy: Circulatory system, and nervouse system. The test is open book, and I want

    asked by Science Olympiad Link Help on December 2, 2008
  83. chemistry 2

    for the reaction 2C2H2(g)=>C6H6(l) at 25 C, the standard enthalpy change is -631 kJ and the standard entropy change is -430 J/K. calculate the standard free energy change at 25 C. show all work Help please!

    asked by concerned chem student on December 5, 2012
  84. chemistry 2

    for the reaction 2C2H2(g)=>C6H6(l) at 25 C, the standard enthalpy change is -631 kJ and the standard entropy change is -430 J/K. calculate the standard free energy change at 25 C. show all work Help please!

    asked by concerned chem student on December 5, 2012
  85. chemistry

    for the reaction 3C2H2=> C6H6 at 25 C, the standard enthalpy change is -631 KJ and the standard entropy change is -430 J/K. calculate the standard free energy change at 25 C. show all work!

    asked by ashley on December 4, 2012
  86. Calculus

    Obtain the MacLaurin series for 1/(2-x) by making an appropriate substitution into the MacLaurin series for 1/(1-x). ------------ The MacLaurin series for 1/(1-x) = Σ x^k I substitue (x-1) in for x, because 1/(2-x) = 1/(1-(x-1)) Making the same

    asked by Sean on June 25, 2009
  87. health

    Combining two or more segments of the industry to deliver the best care, at the most cost-effective rate, in the best setting refers to a/an A. integrated delivery system. B. diagnosis-related group. C. health maintenance organization. D. preferred

    asked by Bobby on January 11, 2013
  88. science

    what is the concentration of hydrogen ion in a 0.1M solution of sodium hydroxide(NaOH)? NaOH dissolves and completely dissociates in H2O to form the ions. NaOH ==> Na^+ + OH^- Therefore, starting with 0.1 M NaOH will give you 0.1 M in Na^+ and 0.1 M in

    asked by michelle on December 31, 2006
  89. chemistry hw, please help

    If you titrate 12.6 mL of an unknown monoprotic (one H) acid with 13.0 mL of 0.140 M NaOH, what will be the concentration of the acid? If you add 23.5g of NaCl to 1.2 kg of water, what will be the boiling point and the freezing point of the new solution?

    asked by Jasmin on November 10, 2010
  90. Chemistry

    1. Sugar can be dissolved in water because of the presence of bonds between _______ in its molecule. 2. If the maximum amount of a compound that can dissolve in 100 mL of water is 22 g, then a solution of 20 g of that substance in 100 mL of water is said

    asked by Amanda on May 20, 2014
  91. Chemistry

    1. Sugar can be dissolved in water because of the presence of bonds between _______ in its molecule. 2. If the maximum amount of a compound that can dissolve in 100 mL of water is 22 g, then a solution of 20 g of that substance in 100 mL of water is said

    asked by Amanda on May 20, 2014
  92. Math

    Given that force 1=60 pounds and force 2=90 pounds, find the angle between the forces if the magnitude of the resultant force is 50 pounds. Round answer to the nearest degree and show work.

    asked by Shelby on April 27, 2011
  93. CALCULUS HELP !

    f(x)=(-3x^3-x^2-9x-8)/(6x^2+4x+3. Find the equation of the non-vertical asymptote. y= Does f(x) intersect its non-vertical asymptote ? What is the smallest value of x at which f(c) intersects its non-vertical asymptote ? please show all the work. I did

    asked by tony on July 21, 2011
  94. Physic

    The tension on a wire is 2640 N. The wire is 2.6 m long and the fundamental frequency is 330 Hz. What is the mass of the wire? (Answer: 2.33g) Answer is provided above. Please show all work on how to get the answer. Thank you!

    asked by Anonymous on May 30, 2014
  95. Chemistry

    A total charge of 96.5 kC is passed through an electrolytic cell. Determine the quantity of substance produced in each of the following cases. (a) the mass (in grams) of silver metal from a silver nitrate solution (b) the volume (in liters at 273 K and

    asked by Sara on June 21, 2013
  96. Physics

    A 28 kg canoe has a 24 kg passenger. The passenger is 2.0 m from the left end of the canoe and the center of mass of the canoe by itself is 2.9 m from the left end. a. Calculate the position of the center of mass of the canoe/passenger system. b. if we

    asked by Ezek on October 21, 2012
  97. algebra 2

    Sandy has $5,000 invested in three accounts. one account bears 2% annual interest, another 3% and other 5%. she has four times the amount invested at 5% as she does at 2%, and she earned $202.50 for the year. write and solve a system of equations to find

    asked by veronica on April 4, 2018
  98. physics

    Two balls are connected by a string that stretches over a massless, frictionless pulley. Ball 1 has a mass of 0.45 kg and is held 0.74 m above the ground. Ball 2 has a mass of 5.7 kg and is held 0.88 m above the ground. When the balls are released, ball 2

    asked by jason on December 22, 2008
  99. Biology

    17.Which one of the following statements is true regarding voluntary and involuntary responses? A.Voluntary responses control the activity of glands. B.Involuntary responses are part of the autonomic system. C.Voluntary responses originate in the sensory

    asked by Anonymous on September 9, 2014
  100. AP Physics

    hi I need help on this proof ok I'm tyring to prove that v^2 = v^20 + 2a(x -x0) where the zeros are subscripts ok the first step my book says is start out with x = x0 + average velocity (t) then plug in average velocity x = x0 + (2^-1(v + v0))t ok and the

    asked by AP Physics on June 13, 2009

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