1. physics- please respond

    A 0.130kg baseball pitched at 35.5 m/s is hit on a horizontal line drive straight back at the pitcher at 50.5 m/s . Part a: If the contact time between bat and ball is 4.25×10^−3 , calculate the magnitude of the force (assumed to be constant) between

    asked by katie on June 1, 2012
  2. Math

    DID I do this right? A homeowner wanted to improve the value of his home by putting tile flooring in three of his rooms. He researched the different types of tile and decided on two types: ceramic tile and decorative tile. He found that he could purchase

    asked by H... ASAP on November 19, 2009
  3. calc: arc length

    Posted by COFFEE on Monday, June 11, 2007 at 11:48pm. find the exact length of this curve: y = ( x^3/6 ) + ( 1/2x ) 1/2

    asked by COFFEE on June 12, 2007
  4. Science

    So I’m awful at summarizing and I came up with the really long answer and I know I need it shorter because it’s definitely not gonna fit on two lines. Please help! Large amounts of heat or transferred to earths mantle from earths core and the mantle

    asked by Oof help on February 8, 2018
  5. Chemistry

    1. 3 Sn2+ (aq) + 2 Al(s) --> 2 Al3+ (aq) + 3 Sn(s). What is the voltage for this cell? 2. What is the voltage for the cell in question 1 if the Sn2+ (aq) is [.15] and Al3+ (aq) is [1.80]? 3. Using proper line notation, describe the cell described in

    asked by Bryce on April 11, 2014
  6. college

    TiO2(s) + H2(g) Ti(s) + H2O(g) (a) Consider the unbalanced equation above. What is the maximum mass of titanium that can be produced when 2.65 g of TiO2 and 3.40 g H2 react? = ?g Ti (b)Assume the reaction in part (a) goes to completion. Calculate the mass

    asked by Megan on February 28, 2010
  7. Chemistry

    net ionic equation to show that sulfurous acid, H2SO3, behaves as an acid in water. I got this answer but do not know if it is correct. H2SO3 + H2O --- H3O + SO I am Not sure if its is tri/mono/diprotic

    asked by Alyssa on April 30, 2017
  8. 12th grade Trigonometry

    Solve this trigonometric equation.give all positive values of the angle between 0deg and 360deg that will satisfy. Give any approximate value to the nearest minute only. 3 sin theta - 4 cos theta = 2

    asked by anon on March 4, 2011
  9. Physics

    Can the following equation be used to solve the question? R = ρ L / A ; find L.. or is there another way? Question: A rectangular piece of gold is 2.2 cm long and 2.4 cm wide. How deep is the piece when it displays a resistance of R = 1.06 μω for a

    asked by Sandra on March 4, 2010
  10. Science

    What is the balanced chemical equation for "solid calcium hydrogen carbonate reacts with hydrochloric acid solution producing carbon dioxide,water and calcium ions in solution?"

    asked by Anonymous on March 6, 2016
  11. chemistry

    calculate the volume of 2.27 M Nal that would be needed to precipitate all the of the Hg +2ion from 166mL of a 2.08 M Hg(NO3)2 The equation for the reaction is 2 Nal(aq) + Hg(NO3)2(aq) > HgI2(s) + 2 NaNO3(aq) Please Help I'm really having trouble

    asked by Randy on April 30, 2012
  12. Chemistry

    Ammonia (NH3) reacts with oxygen to produce nitric oxide (NO) and water (see balanced equation below). How many grams of oxygen do you need to react with 21.4 g ammonia? __4_NH3 + __5_O2 → __4_NO + _6__H2O

    asked by Richard on October 2, 2016
  13. Chemistry

    A sample of metal has a mass of 1.75 kg and a specific heat of 0.115 cal/g oC. What is the temperature change of the metal after 625 calories of heat are added? My answer is 3 oC. Just want to make sure is right and my equation is set up right.

    asked by Karamu on October 6, 2012
  14. chemistry

    sodium azide, decomposes according to the following equation: 2NaN3 (s) -> 2Na (s) + 3N2(g) What mass of sodium azide is required to provide nitrogen needen to inflate a 80.0 L bag to a pressure to 1.35 atm at 25 c?

    asked by eveline on April 19, 2010
  15. Chemistry

    At equilibrium, the concentrations in this system were found to be [N2]=[O2]=0.100 M and [NO]=0.500 M. The balanced chemical equation is N2+O22NO. If more NO is added, bringing its concentration to 0.800 M, what will the final concentration of NO be after

    asked by Dee on April 2, 2013
  16. algebra

    I'm stuck with this problem. h = -16t^2 + 312 the "t" is seconds after object released and h stands for height. We're suppose to set the equation to 0 so far this is what I have: -16t^2 + 312 = 0 -8(2t^2+39)= 0 -8=0 can be disqualified but how do I factor

    asked by Andrea on November 13, 2013
  17. Math: Calculus

    The equation: 10(x-1)(x-2)(x-3)=1, has three real solutions a

    asked by REALLY NEED HELP!!!! on November 4, 2010
  18. Physics

    A 2 kg otter starts from rest at the top of a muddy incline 85 cm long ans slides down to the bottom in 0.5 s. What net external force acts on the otter along the incline? I know which equation I need to use. But how can I use the cm and s to get the

    asked by Lindsay on November 14, 2007
  19. Maths

    Coordinate Geometry A=(7,4) B=(2,0) Gradient of AB = 4/5 Equation of AB in ax+by=0 for is 4x-5y-8=0. The length of AB in surd form is root41. The point C has coordinates (2,t), where t>0 and AC=AB. a) find the value of t. b) without plotting point, find

    asked by Anonymous on October 12, 2015
  20. electric fields *easy

    A charged particle is at the origin of coordinates. The particle produces an electric field of 4 kN/C at the point with position vector 36 cm. At what location does the field have the value 1 kN/C? Ans: 72 cm Could someone please explain to me what

    asked by Physics on June 5, 2010
  21. chemistry

    Calculate the value of T delta S (KJ) of reaction for the equation as written. (It is given that the standard enthalpies (J/K mol)are CH3COOH=159.8, O2=205.138, CO2=213.7, H20=69.91) CH3COOH(l) + 2 O2(g) --> 2 CO2(g) + 2H2O(l)

    asked by Anonymous on March 9, 2008
  22. MATH

    I have about 30 questions of this, so I need to understand the process. Please make it as detailed as possible! Thank you! Q: To reduce 32 grams of a 25% solution of antiseptic to a 10% solution, how much distilled water should a pharmacist add? A:

    asked by LILY on July 21, 2008
  23. Chemistry

    1.Using Nerst, find the E of the cell for the dicromate redox system: A.under standard conditions. B.under neutral solutions instead of acid solutions. 2.Use Nerst and the hydrogen half equation to obtain an expression for pH.

    asked by Kris on October 29, 2014
  24. math

    Gloria wants new carpet for her living room.The room is 15 ft wide and 20 ft long. Which equation can be used to find C,the number of square geet of carpet she needs to cover the floor? A.C=20x15 B.C=(2x20)+(2x15) C.C=15+20 D.C=(15+20)x2 A?

    asked by NrGliight on May 9, 2012
  25. Math

    Could someone pls. help me out on the following question: find the producers surplus (to the nearest dollar ) at a price level of p=$26 for the price-supply equation p = s(x)= 5ln(x+1) . An early response would be greatly appreciated pls. Thank you.

    asked by Jim on January 12, 2013
  26. Algebra HELP ASAP

    CURRENTLY 6 LESSON DAYS BEHIND AND VERY DEPRESSED/STRESSED!! You are making a rectangular table. The area of the table should be 10 ft^2. You want the length of the table to be 1 ft shorter than twice its width. What should the dimensions of the table be?

    asked by LunaTheCat on March 30, 2015
  27. chemistry

    A 0.03 mol sample of NH4NO3(s) is placed in a 1 L evacuated flask, which is then sealed and heated. The NH4NO3(s) decomposes completely according to the balanced equation above. The total pressure in the flask measured at 400 K is closest to which of the

    asked by jerry on January 8, 2009
  28. Chemistry (urgent)

    1.Using Nerst, find the E of the cell for the dicromate redox system: A.under standard conditions. B.under neutral solutions instead of acid solutions. 2.Use Nerst and the hydrogen half equation to obtain an expression for pH.

    asked by Kris on October 29, 2014
  29. Chemistry

    A buffer solution contains HC2H3O2 at a concentration of 0.225 M NaC2H3O at a concentration of 0.164 M. The value of Ka for acetic acid is 1.75 × 10-5. Calculate the pH of this solution using the Henderson-Hasselbalch equation. Could you please show

    asked by Chemistry Chick on November 17, 2011
  30. chemistry-Dr.Bob

    ok for a lab we had to titrate a solution with KMnO4 and for each trial i got 22.83 mL,23.92, and 22.48 I need to find the mass percent of the oxalate ion. How would I do this? The equation is MnO4-+C2O4 2- -> Mn 2+ + CO2 In the lab we used about .1 g of

    asked by Trisha on May 5, 2008
  31. chemistry

    which conversion factor do you use first to calculate the number of grams of CO2 produced by the reaction of 50.6 gram of CH4 with O2? The equation for the complete combustion of methane is: CH4+2O2-->CO2+2H2O.

    asked by afdsfd on June 9, 2008
  32. Chemistry

    Net Ionic equation for 1. Iron(II) Iodide and Magnesium Acetate 2. Ammonium Phosphate and Cobalt(III) Chloride 3. Sodium Acetate and Potassium Chloride These are the only ones I have left on my HW and I can't seem to figure them out would appreciate some

    asked by Jake on October 12, 2016
  33. chemistry

    what is the balanced chemical equation for "solid calcium hydrogen carbonate reacts with hydrochloric acid solution producing carbon dioxide,water and calcium ions solution"?

    asked by Anabeth on March 6, 2016
  34. Chemistry ( I NEED HELP, PLEASE!!!, IM DESPERATE!)

    Sodium peroxide reacts vigorously with water to produce sodium hydroxide and oxygen. The unbalanced equation is Na2O2(s) + H2O(ℓ)→ NaOH(aq) + O2(g). What mass of O2 is produced when 81 g of Na2O2 react?

    asked by Farrell on March 11, 2015
  35. Physics repost

    A 2 kg otter starts from rest at the top of a muddy incline 85 cm long ans slides down to the bottom in 0.5 s. What net external force acts on the otter along the incline? I know which equation I need to use. But how can I use the cm and s to get the

    asked by Lindsay on November 14, 2007
  36. Physics

    PHYSICS HELP PLS!!How does the equation of a displacement v. speed graph (cart moving down an incline through a speed gate) relate to the work-energy principle. Pls answer asap! Thanks!

    asked by PLS HELP!! on April 16, 2016
  37. physics

    The height of a ball thrown up with a velocity of 39.2 m/s is given as a function of time(measured in seconds) by the equation H(t) = 39.2t -4.9t2 + 58.8. How much time will the ball take to fall to the ground? (9.29 s) pls explain how to solve the answer

    asked by Anon on July 13, 2018
  38. Chemistry ( I NEED HELP, PLEASE!!!!, IM DESPERATE)

    Sodium peroxide reacts vigorously with water to produce sodium hydroxide and oxygen. The unbalanced equation is Na2O2(s) + H2O(ℓ)→ NaOH(aq) + O2(g). What mass of O2 is produced when 81 g of Na2O2 react?

    asked by Farrell on March 11, 2015
  39. Maths

    I have a summation formula for Fibonacci numbers. n (SUM)F(2i)=F(2n+1)-1 i=0 When the i value is changed from zero, and is then subbed into F(2i)the equation will not work. (RHS wont = LHS) eg: i=2 n=3 3 (SUM)F(4)=F(7)-1 i=2 I understand the summation bit,

    asked by Tim on November 4, 2008
  40. Math

    The temperature was 56 degrees this morning but dropped one degree per hour through the rest of the day. Use the graph you made for the equation for this problem, to approximate the answer to the following question: What temperature was it 15 hours later,

    asked by Desirae on April 30, 2013
  41. college physics

    using the quadratic equation on a 2 dimensional projectile motion problem... i am solving for tf and i have it worked all the way down to: -100m(tf)-100m(tf) / -10m/s^2(tf)^2 or -200m(tf) / -10m/s^2(tf)^2 is the answer 20 seconds? algebra is not my strong

    asked by dave on November 29, 2009
  42. physics repost

    I am still trying to solve for H in this equation but I am still lost MgH = (1/2)*k*(H-2-10)^2 + Mg*2 I was told to expand the square on the right, gather terms, put it in the standard quadratic form, and use the quadratic formula, but I don't know how.

    asked by Chris Adison on April 24, 2008
  43. DYnamics

    Thank you Advance...;; Q: A body of mass 10 kg is moving over a smooth surface, whose equation of motion is given by the relation. s = 5t + 2t² where (s) is in metres and (t) in seconds. Find the magnitude of force responsible for the motion. Thank you

    asked by abodd on November 7, 2016
  44. Chem

    The brown color associated with photochemical smog is due to NO2(g). This is involved with the following equilibrium in the atmosphere: 2 NO2(g) N2O4. Predict the signs of the enthalpy and entropy changes for this reaction. If the equation is at

    asked by Ginger on March 30, 2008
  45. Geometry

    I need some help with this question. I need to find the measurement of M

    asked by Allyson on November 30, 2011
  46. dynmic

    A body of mass 10 kg is moving over a smooth surface, whose equation of motion is given by the relation. s = 5t + 2t² where (s) is in metres and (t) in seconds. Find the magnitude of force responsible for the motion. ? Step by step P help me.

    asked by aboddu on November 8, 2016
  47. Chemistry

    Given that the pKa for Acetic Acid is 4.77, calculate the expected pH of the buffer solutions using the Henderson-Hasselbalch equation and the concentrations of Acetic Acid and Acetate added to the 250 ml Erlenmeyer flask

    asked by M_Joe on March 18, 2011
  48. Math

    The final exam will count as two tests. Brooke has test scores of 80, 83, 71,61 and 95. What score does Brooke need on the final in order to have an 80? I thought 80+83+71+61+95 = 390 / 5 = 78 then I don't know what to do next. Although I did do 78 +2x =

    asked by Amy~ on September 19, 2010
  49. Chemistry

    A volume of 60.0mL of aqueous potassium hydroxide (KOH ) was titrated against a standard solution of sulfuric acid (H 2 SO 4 ). What was the molarity of the KOH solution if 25.7mL of 1.50 M H 2 SO 4 was needed? The equation is 2KOH(aq)+H 2 SO 4 (aq)¨K 2

    asked by Sarah on September 26, 2013
  50. MATH!+ check please~ thanks in advance!

    the equation 2x^2+ cy^2+Dx+Ey+f= 0 represent a conic. state the value(s) of C for which each of the following are possible: A circle: My answer: c= 2 an ellipse: My answer: c>0, cant equal 2 Parabola: My answer:c=0 a hyperbola: My answer: c

    asked by conics!? on March 23, 2007
  51. Chemistry

    2HI(g)--> H2(g) + I2(g) The rate law for the decomposition of HI is r=k[HI]^2. The rate of the rxn was found experimentally to b 2.5 x 10^4 mol/L x s where the HI concentration was 0.0558 M. Are these values ready to plug in to the equation, or because

    asked by Jamie on May 16, 2010
  52. physics

    The quantity of charge q (in coulombs) that has passed through a surface of area 2.08 cm2 varies with time according to the equation q = 4t3 + 5t + 6, where t is in seconds. (a) What is the instantaneous current through the surface at t = 1.08 s? (in A)

    asked by suhani on September 5, 2013
  53. Cal

    You plan to paint a sphere of radius 200 cm with a coat of pain .2 cm thick. Use differentials to approximate the amount of paint that is needed. Use the equation for the volume of a sphere. So far I have C=81, X=82, f(x)= x^1/4 and C-x = 1 (If correct)

    asked by Belle on October 26, 2016
  54. General Chemistry

    Question 1: In the Balmer-Rydberg equation, what value of m is used to determine the wavelengths of the Balmer series? m=? Question 2: List a possible set of four quantum numbers (n,l,ml,ms) in order, for the highest energy electron in gallium,Ga.

    asked by Sophie on October 25, 2009
  55. Calculus

    A rectangle is bounded by the x-axis and the semicircle y = sqrt(36-x^2). What length and width should the rectangle have so that its area is a maximum? I understand that 2xy = A and that 4x + 2y = P, but I'm not sure how to solve for a variable to plug

    asked by Jane on March 2, 2016
  56. Chemistry

    I need help with finding the theoretical yield of Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g). So far I have 24.305 + 37.4688 = 61.7738 g based on the weight of MgCl2 + H2, but I'm not exactly sure what to do or if I've even started it properly. Also, if you

    asked by Josh on February 28, 2012
  57. Trigonometry

    Use inverse trigonometric functions to find the solutions of the equation that are in the given interval, and approximate the solutions to four decimal places. (Enter your answers as a comma-separated list.) 10 sin^2 x = 3 sin x + 4; [0, 2π)

    asked by Katlynn on March 6, 2013
  58. Chemistry

    The Energy from glucose is obtained from the oxidation reaction C6H12O6 + 6O2 --> 6CO2 + 6H2O How would a similar reaction look for Sucrose? I am trying to find an equation about how the body uses a compound, in this case sucrose. I'm just not sure how

    asked by James on March 22, 2012
  59. Math

    The theater offers a yearly membership for which customers pay a fee of $50 after which they pay only $1 per movie Create an equation for the membership deal Use C for the cost in dollars and N for the number of movies rented

    asked by Anonymous on March 18, 2015
  60. physics repost

    I am still trying to solve for H in this equation but I am still lost MgH = (1/2)*k*(H-2-10)^2 + Mg*2 I was told to expand the square on the right, gather terms, put it in the standard quadratic form, and use the quadratic formula, but I don't know how.

    asked by Chris Adison on April 24, 2008
  61. Algebra

    1. Solve the equation below for x interms of a 4(ax+3)-3ax=25+3a 2. The formula for the sum of the degree measures of the interior angles of a polygon is S=180(n-2). Solve for n, the number of sides of the polygon, in terms of S. IM STRUGGLING PLEASE HELP

    asked by Kianna on December 20, 2016
  62. precalculus

    Use a Double- or Half-Angle Formula to solve the equation in the interval [0, 2π). (Enter your answers as a comma-separated list. Round your answers to three decimal places where appropriate.) sin 2θ + sin θ = 0

    asked by Ama on October 28, 2012
  63. Trigonometry

    Use inverse trigonometric functions to find the solutions of the equation that are in the given interval, and approximate the solutions to four decimal places. (Enter your answers as a comma-separated list.) 10 sin^2 x = 3 sin x + 4; [0, 2π)

    asked by Katlynn on March 6, 2013
  64. chemistry

    I do not understand how to right a balanced equation for the combustion of cellulose in oxygen to produce carbon dioxide and water vapor. I know that cellulose is C6H10O5 but I don't understand how to balance. Thanking you in advance for your help.

    asked by linda on March 27, 2014
  65. chem

    how many moles of HCl will be produced when 30g of H2O are reacted according to the chemical equation 2AlCl3 + 3H2O -> Al2O3 + 6HCl? (molar masses are H2o=18.015g and HCl=36>46g)

    asked by bekah on October 4, 2014
  66. chemistry

    In the industrial preparation of HNO3, NH3 is burnt in O2 in the presence of a catalyst, according to the following equation; 4NH3 + 502 - 4NO +6HO If 260ccm3 of NH3 is burnt completely. what volume of O2 is used up and NO is produced

    asked by Precious on November 3, 2015
  67. chem

    Next step, multiply both sides by (.01-x) .012(.01-x)=.01x+x^2 gather terms, put in standard binomial form, use the quadratic equation, and solve for x. is the standard binomial x^2+.022x-1.2x10^-4

    asked by lyne on March 26, 2008
  68. calculus

    a particle is moving counterclockwise around the circular path whose equation is x^2+y^2=100 of the abscissa of the particle is increasing by 72in/sec at a point where x=8 find the rate of changeof the cordinate(y) at this point

    asked by Amanda on November 7, 2012
  69. Chemistry

    Ammonia may be oxidised to nitrogen monoxide in the presence of catalyst according to the equation 4 NH3 + 5 O2 gives 4 NO and 6 H2O. If 27 litres of reactants are consumed , what volume of nitrogen monoxide is produced at the same temperature and

    asked by b.s. chandrshekar on September 28, 2015
  70. algebra

    Find a linear equation in the form P = mt + b (y = mx + b), which gives the population, P, t years from 2010. This is based off of an initial population of 6,000 in 2010, with a growth of 200 ppl per year. Please show work

    asked by Carmine on December 2, 2008
  71. Calculus

    The balloon leaves the ground 80 ft. from an observer and rises vertically upward at 5 ft/s. (a) How fast is the balloon receding from the observer after 12 seconds? (b) find the corresponding acceleration? How do I sketch it? and what equation should I

    asked by Jean on August 12, 2015
  72. Physics

    a speed boat is moving though the water at a speed of 28 m/s when the engine stalls. the boat comes to a halt over 120m, what is the time it takes to stop and what is the acceleration. im trying to figure it out but i don't know what kinematic equation to

    asked by Neil on August 27, 2015
  73. Chemistry Help!!

    Determine triangle H when 10g of HN3 are reacted in the following reaction: 4HN3 + 2NO2 arrow pointing > 2H202 + 7N2 (note: triangle Hf for HN3 = +267.1 kJ Equation? Answer? Thanks

    asked by Anonymous on May 20, 2010
  74. Organic Chemistry

    What is the white solid that quickly forms when the methyl salicylate is added to the sodium hydroxide solution? I know that it is this equation but I wanted to know what is the name of the white solid: HOC6H4COOCH3 + NaOH „³ HOC6H4COO- Na+ + CH3OH

    asked by Jonathan on April 3, 2010
  75. Trigonometry

    Use inverse trigonometric functions to find the solutions of the equation that are in the given interval, and approximate the solutions to four decimal places. (Enter your answers as a comma-separated list.) 10 sin^2 x = 3 sin x + 4; [0, 2π)

    asked by Katlynn on March 6, 2013
  76. Grade 12 Calculus

    A rectangular piece of paper with perimeter 100 cm is to be rolled to form a cylindrical tube. Find the dimensions of the paper that will produce a tube with maximum volume. I have made it up to getting an equation for V(w).

    asked by Q on March 25, 2014
  77. math

    Graph the equation by completing the table and plotting the points. You may use Excel or another web-based graphing utility. a) y = 3x - x2 Use the values of x provided in the table to find the y values. Show your work.

    asked by shirley on September 17, 2011
  78. Chemistry

    So I thought i finally had figured out how to balance these equations but now this one with the formula in it has confused me again. Can you help with the next steps in balancing this equation? Maybe if I can get the answer to this one I can complete my

    asked by Susan on March 12, 2012
  79. precalculus

    Find the polar equation r=8cos3theta, find the maximum value of lrl and any zeros of r. Verify your answers numerically. |cos3θ|

    asked by Anonymous on December 14, 2016
  80. Chemistry

    Use the equation below to answer the following question. How many grams of calcium chloride are produced from 19.3 g of HCl? 2HCl + Ca(OH)2 à 2H2O + CaCl2 Give your answer in correct sig digs and correct label.

    asked by Anonymous on May 6, 2015
  81. Completing the square

    Please show the procedure for answering this quadratic equation using the completing the square method: x^2+14x+98 I think i understand the basics of the method, but in this particular question I'm finding it hard to use the appropriate factors of 98 - 7

    asked by Barbie on May 20, 2011
  82. chem

    A 73-kg person is accidentally exposed for 215 s to a 16-mCi source of beta radiation coming from a sample of 14C. What is the activity of the radiation source in disintegrations per second? In becquerels? i am not sure if there is an equation for this or

    asked by sara on September 10, 2012
  83. science

    solution A was prepared by dissolving 0.63g of HNO3 in 100cm3 solution. Solution B is a sodium calcium hydroxide solution of unknown concentration. state a balanced chemical equation for the reaction

    asked by Zoe on August 25, 2015
  84. Physic

    A ball throw at 45 degree angle with an initial speed of 15m/s. the time for the ball to reach its highest point can be found from the data and known constants using which equation? solve for time?

    asked by Zach on January 31, 2011
  85. Math

    What is the value of y if x = -3? y = 1 = 2(x-5) Plug in -3 for x, in the equation for y, and see what you get. I think you copied the problem wrong. Is the first = sign supposed to be a + or - sign? If not, you have already stated that y = 1. That cannot

    asked by Ruby on June 29, 2007
  86. math

    A stairway runs up the edge of the pyramid. From bottom to top the stairway is 92 m long. The stairway makes an angle of 70° to the base edge, as shown. A line from the middle of one of the base edges to the top of the pyramid makes an angle of elevation

    asked by anon on February 20, 2014
  87. science

    In an experiment to determine the speed of sound, two observers, A and B, were stationed 5.0 km apart. Each was equipped with a gun and a stopwatch. Observer A heard the report of B's gun 15.5 s after seeing it's flash. Later, A fired his gun and B heard

    asked by David on February 16, 2015
  88. physics

    A person is standing at the edge of the water and looking out at the ocean (see figure). The height of the person's eyes above the water is h = 1.9 m, and the radius of the Earth is R = 6.38 x 106 m. (a) How far is it to the horizon? In other words, what

    asked by DEMETRIUS on January 19, 2016
  89. PHYSICS

    Let' s try it the right way this time. A person begins walking at noon one day from point A and travels at a constant velocity along a straight line path to point B a distance D away, arriving at 7 pm that evening. The very next day, the traveler leaves B

    asked by HHH on September 15, 2016
  90. programming

    I really need help in this it makes me confuse.I should make a program to find a pattern...so can somebody help me... Write a function to recognize an pattern within another array. Your function should have the following prototype. const int

    asked by Ryan on October 24, 2009
  91. physics

    Two industrial spies slide a floor safe 8.5m along a straight horizontal line toward their truck. The push (F1) of the Spy 001 is 320 N, directed at an angle of 30 degrees downward from the horizontal; the pull (F2) of Spy 002 is 250 N, directed at 40

    asked by Meagan on November 2, 2017
  92. college: Chemistry

    Hi can someone help me with this other problem from my homework, The thermochemical equation is C6H12O6(s)+ 6O2(g)--> 6CO2(g)+ 6H2O(g) reaction is -2539.01 kJ/mol Part B) What is the minimum number of photons with wavelength of 645nm needed to prepare 135

    asked by Shylo on February 10, 2009
  93. chem 3A

    please help me with these homework problems from chemistry because the teacher did not give enough information to some of these chemistry work problems. 1) 50.0 g of aluminum is reacted with excess sulfuric acid. The chemical equation for the reaction is:

    asked by shylo on July 25, 2008
  94. French

    1. you need to draw a representation of your body and include all the body parts that we have learned from this unit.(There are 18 body parts-include 2 additional body parts that I have given to you in class. 2. you will also need to include 8 colorful

    asked by Anna on September 30, 2009
  95. microeconomics

    Ok, if anyone is able to help me within the next 12 hours or so, that would be wonderful! I think I am going about this problem correctly -- I am not looking for someone to solve this problem for me, but for someone to tell me if I am doing it right... You

    asked by Dave on August 31, 2006
  96. money and banking

    Suppose that the Fed's inflation target is 2%, potential output growth is 3.5%, and velocity is a function of how much the interest rate differs from 5%: % triangle v=0.5 x (i-5) Suppose that a model of the economy suggests that the real interest rate is

    asked by Anonymous on March 17, 2013
  97. english

    Can someone link me sites where they have information on the two below? 1. In Act IV, Scene 1 of Romeo and Juliet, Juliet cries, ''O, bid me leap, rather than marry Paris . . . And I will do it without fear or doubt.'' Both Romeo and Juliet seek out Friar

    asked by Carl Wheezer on April 3, 2017
  98. computer science

    Acarrentalcompanyusesthefollowingtabletohelpcomputerentalfees. TABLE 9.3 Car Type Chevrolet Corvette Pontiac Buick Oldsmobile Cadillac Rate per Day 50.00 85.00 53.00 60.00 60.00 70.00 Rate per Mile 0.27 0.45 0.32 0.32 0.35 0.40 Write a program to calculate

    asked by kurt on September 28, 2016
  99. computer science

    Acarrentalcompanyusesthefollowingtabletohelpcomputerentalfees. TABLE 9.3 Car Type Chevrolet Corvette Pontiac Buick Oldsmobile Cadillac Rate per Day 50.00 85.00 53.00 60.00 60.00 70.00 Rate per Mile 0.27 0.45 0.32 0.32 0.35 0.40 Write a program to calculate

    asked by kurt on September 28, 2016
  100. History

    What was the significance of the Treaty of Tordesillas? A) It established the line of demarcation that granted Spain the right to lands in the Americas and Portugal the right to settle in Africa. B) It promoted the idea that the Catholic religion would be

    asked by Klauus on May 13, 2019

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