Questions Asked on
February 10, 2012

  1. Trigonometry

    If A + B + C = 180°, Prove that Cos²A + Cos²B + Cos²C = 1-2cosAcosBcosC

    asked by Kewal
  2. economics

    Suppose that there are three beachfront parcels of land available for sale in Asilomar and six people who would each like to purchase one parcel. Assume that the parcels are essentially identical and that the minimum selling price of each is $600,000. The

    asked by peter
  3. CHEM

    At constant pressure, which of these systems do work on the surroundings? Check all that apply. 2A (g) + B(s) --> 3C(g) 2A (g) +2B (g) -->5C(g) A(g)+ B(g) --> C(g) A (s) +2B(g)--> C(g)

    asked by Akle
  4. trigonometry

    the bases of a trapezoid are 22 and 12 respectively. The angles at the extremities of one base are 65 degree and 40 degree respectively find the two legs. Answer using law of sines pls

    asked by joe
  5. physics

    A wooden cube of side 10cm has mass 700g.What part of it remains above the water surface while floating?

    asked by Anonymous
  6. Chemistry

    A researcher studying the nutritional value of a new candy places a 4.90 gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.75 Celsius. If the heat capacity of the calorimeter is

    asked by Carey
  7. Chemistry

    Consider an ideal gas encloesd in a 1.00 L container at an internal pressure of 10.0 atm. Calculate the work, w, if the gas expands against a constant external pressure of 1.00 atm to a final volume of 20.0 L. w = ____ J now calculate the work done if this

    asked by Lauren
  8. PHYSICS

    The density of ice is 0.92g cm-3 & that of sea water is 1.025g cm-3.Find the total volume of an iceberg which floats with its volume 800cm3 above water? ANSWER:7809.5cm3

    asked by MOHIT
  9. Chemistry

    If the heat from burning 5.800 g of C6H6 is added to 5691 g of water at 21 °C, what is the final temperature of the water? 2C6H6(l) +15O2 (g)----> 12CO2(g)+6H2O(l) +6542

    asked by Jen
  10. chemistry

    When a certain amount of MgF2 is added to water, the freezing point lowers by 3.5 oC. What was the molality of the magnesium fluoride? (Kf for water = 1.86 oC/m)

    asked by lw
  11. Geometery

    In a rhombus, m1 = 18x, m2 = x + y, and m3 = 30z. Find the value of the variables x,y, and z. .

    asked by McKenzie
  12. government

    Which institution developed outside the limits of the written Constitution of the United States?

    asked by aj
  13. Chemistry

    2C6H6(l) + 15O2(g) -> 12CO2(g) + 6H2O(l) + 6542 kJ If the heat from burning 7.000 g of C6H6 is added to 5691 g of water at 21 degrees C what is the final temperature of the water?

    asked by David
  14. physics

    A kid fires water horizontally from a squirt gun held 1.6 above the ground. It hits another kid 2.1 away square in the back, at a point 0.91 above the ground.

    asked by lala
  15. math

    In the 17th century, there were more than 800,000 inhabitants of Paris. At the time, it was believed that no one had more than 200,000 hairs on their head. Assuming these numbers are correct and that everyone has at least 1 hair on their head, show that

    asked by Dan
  16. math

    In Exam Figure 7, AA′ = 33 m and BC =7.5 m. The span is divided into six equal parts at E, G, C, I, and K. Find the length of A′B. Round your answer to two decimal places.

    asked by chelsey
  17. chemistry(Please check)

    1) In comparing the phase diagram for water with that of a solution of sugar in water, all of the following decrease except a) the vapor pressure b) the boiling point c) the freezing point d) the triple point I chose the boiling point as the answer. Is

    asked by Hannah
  18. physics

    A bowling ball (mass = 7.2 kg, radius = 0.12 m) and a billiard ball (mass = 0.31 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?

    asked by cody
  19. Chem

    Which of the following statements is part of the kinetic theory? The particles of a gas move independently of each other. The particles in a gas move rapidly. The particles in a gas are relatively far apart. all of the above

    asked by Sara
  20. Trigonometry

    If A + B + C = 180°, Prove that Cos²A + Cos²B - Cos²C = 1 – 2sinAsinBcosC

    asked by Kewal
  21. physics

    If the magnitude of the electric field in air exceeds roughly 3 106 N/C, the air breaks down and a spark forms. For a two-disk capacitor of radius 49 cm with a gap of 1 mm, what is the maximum charge (plus and minus) that can be placed on the disks without

    asked by james
  22. physics

    A coil of wire of cross-section 0.75 square mm weighs 125g in air and 115g in water. What will be the length of the coil?

    asked by Kushagra
  23. Physics

    A 210W heater is placed in 2KG of water. What temperature rise is produced if the heater is switched on for 200 seconds?

    asked by SMK
  24. Organic Chemistry

    How do I write a balanced equation for the synthesis of benzoic acid using the grignard reagent. To make the grignard reagent I used 0.5g of Mg, 2 ml of ether, and 3.9g of bromobenze. then to make the benzoic acid I used CO2 and H3O+. I will really

    asked by lidia
  25. Physics

    Find the maximum height reached by a ball thrown upward at a velocity of 95ft/s

    asked by ####tasha####
  26. Science

    A block of metal weighing 2kg is resting on a frictionless plane. It is struck by a jet releasing water at the rate of 1kg/s and at a speed of 5m/s. Find the initial acceleration of the block.

    asked by Kushagra
  27. physics

    The flywheel of a steam engine begins to rotate from rest with a constant angular acceleration of 1.41 rad/s2. It accelerates for 25.5 s, then maintains a constant angular velocity. Calculate the total angle through which the wheel has turned 65.5 s after

    asked by qwertzuiop
  28. Chemistry

    Suppose MgSe(a=545 pm) and SrSe (a=623 pm) both crystallize with a NaCl (rock salt) structure. Calculate the ionic radius of Sr2+ (Hint:Assume that the Se2- ions actually touch in MgSe.)

    asked by Lindsey
  29. physics

    The windshield of a speeding car hits a hovering insect. Consider the time interval from just before the car hits the insect to just after the impact. Which of the following are correct? (Select all that apply.) Choose the system so that the change of

    asked by marcos
  30. chemistry

    116 g of isopropanol, formula C3H8O, contains how many moles?

    asked by Brianna Bernard
  31. physics

    Suppose all the people of the Earth go to the North Pole and, on a signal, all jump straight up. Estimate the recoil speed of the Earth. The mass of the Earth is 6 1024 kg, and there are about 6 billion people (6 109). Take the average mass of a person to

    asked by marcos
  32. physics

    A point charge of +10 micro-coulombs lies at x = -0.39 m, y = 0 m, a point charge of -5.7 micro-coulombs lies at x = +0.39 m, y = 0 m, and a point charge of +14.9 micro-coulombs lies at x = 0 m, y = -0.3 m. A point charge of +10 micro-coulombs is moves

    asked by Mandaleigh
  33. PHYSICS

    The density of ice is 0.92 g cm-3 & that of sea water is 1.025 g cm-3.Find total volume of an iceberg which floats with its volume 800 cm3 above water. ANSWER:7809.5 cm3

    asked by MOHIT
  34. chemistry

    Write net ionic equation for the reaction between nitric acid and calcium hydroxide.

    asked by ivy
  35. physics

    A conducting spherical shell with a total charge of +12.6 micro-coulombs has a point charge of -3.6 micro-coulombs placed at its center. The negative point charge will push the electrons in the spherical shell away from it. This will leave the inner shell

    asked by Mandaleigh
  36. physics

    A point charge of +4.6 micro-coulombs lies at x = 0 and a point charge of -7.3 micro-coulombs lies at x = +3.3 m. Where on the x axis, is the total electric potential equal to zero? Answer in meters.

    asked by Mandaleigh
  37. algebra

    Explain how you find ordered-pair solutions of the equation 3x – 5y = 15, and then find two such solutions.

    asked by lucy
  38. Chemistry

    In a constant-pressure calorimeter, 60.0 mL of 0.330 M Ba(OH)2 was added to 60.0 mL of 0.660 M HCl. The reaction caused the temperature of the solution to rise from 21.71 °C to 26.21 °C. If the solution has the same density and specific heat as water,

    asked by Heather
  39. Chemistry

    Which aqueous solution below is expected to have the lowest freezing point? Assume 100% dissociation for ionic species. 1)0.25m MgBr2 2)0.30m Na2SO4 3) 0.50m KCl 4) 1.0m sucrose 5) 0.40m Cr(NO3)3 I think that the answer is 0.30NaSO4 but I am not positive.

    asked by Hannah
  40. algebra 2

    Which equation correctly shows d = xyz solved for z?

    asked by Lalt
  41. algebra 2

    Petra needs to find the equation of a line through (–2, 3) that is parallel to the line represented by y = 2x– 4. Which equation best represents Petra's equation?

    asked by Lalt
  42. algebra

    The apothem of a regular polygon is the distance from the center of the polygon to a side. Explain how to derive a formula for the area of a regular polygon using the apothem.

    asked by lucy
  43. Science

    In a rocket, fuel burns at the rate of 1kg/s. This fuel is Ejected from the rocket with a velocity of 60km/s. What force will be exerted on the rocket?

    asked by Kushagra
  44. math. can someone explain this!

    using this information: if an object is thrown straight up into the air from the height H feet per second then at time tseconds the height of the object is -16.1t^2 +Vt+ H feet. This formula uses only gravitational force, ignoring air friction. It is valid

    asked by deana
  45. Calc 2

    Find c>0 such that the area of the region enclosed by the parabolas y=x^2−c^2 and y=c^2−x^2 is 90.

    asked by Rebecca
  46. Chemistry

    A student mixes 45.0 ml of .150 M HCL with 30.0 ml of .200 M NaOH. What is the pH of the resulting solution?

    asked by Juliano
  47. ENGLISH

    Unscramble the letters: N A N Qu I I R A B I N S O U I O TO MAKE THE BIGGEST WORD

    asked by KELSI
  48. physics

    Two boxes (b1 = 23 kg and b2 = 57 kg) are being pushed across a horizontal frictionless surface, as the drawing shows. The 48-N pushing force is horizontal and is applied to the 23-kg box, which in turn pushes against the 57-kg box. Find the magnitude of

    asked by cody
  49. physics

    When a wheel of radius R rotates about a fixed axis, do all points on the wheel have 1) The same angular velocity? Explain. 2) The same linear velocity? Explain. If the angular velocity is constant, 3) describe the linear velocities and accelerations

    asked by qwertzuiop
  50. Chemistry

    At constant pressure, which of these systems do work on the surroundings? Check all that apply. 2A (g) + B(s) --> 3C(g) 2A (g) +2B (g) -->5C(g) A(g)+ B(g) --> C(g) A (s) +2B(g)--> C(g)

    asked by Allie
  51. algebra

    samuel is 5/8 inch taller than jackie. shelley is o.7 inch taller than jackie. craig is inch taller than jackie. who is taller?

    asked by colby
  52. Physics

    Wheel A of radius ra = 13.9 cm is coupled by belt B to wheel C of radius rc = 34.3 cm. Wheel A increases its angular speed from rest at time t = 0 s at a uniform rate of 5.7 rad/s2. At what time will wheel C reach a rotational speed of 168.2 rev/min,

    asked by Marc
  53. 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
  54. Chemistry(Please check)

    1) If exactly 100.0 grams of NaCl (mm=58.44g/mol) are dissolved in 300 grams of water (mm=18.02g/mol), the mole fraction of NaCl is? a) 1.71 b) 0.0932 c) 0.250 d) 0.103 e) 4.75 I did 100g / 100g + 300g = 100/40 = 0.250. Did I do this correctly?

    asked by Hannah
  55. physics

    A circle with a radius of R is inscribed in a square. On the corner of the square are point charges of +q, +q, -q, and +q. On the circle are charges of +2q, +2q, -q, and +q. (See sketch.) If q = 4.8 micro-coulombs, and the total potential at the center of

    asked by Mandaleigh
  56. Trigonometry

    If A + B + C = 180°, Prove that Sin² (A/2) + sin² (B/2) + sin²(C/2) = 1 – 2sin (A/2) sin (B/2) sin(C/2)

    asked by Kewal
  57. PHYSICS

    A wooden cube of side10cm has 700g.What part of it remains above the water surface while floating om water?

    asked by MOHIT
  58. Chemistry

    In a constant-pressure calorimeter, 50.0 mL of 0.300 M Ba(OH)2 was added to 50.0 mL of 0.600 M HCl. The reaction caused the temperature of the solution to rise from 24.50 degrees C to 28.59 degrees C. If the solution has the same density and specific heat

    asked by Eric
  59. math

    using this information: if an object is thrown straight up into the air from the height H feet per second then at time tseconds the height of the object is -16.1t^2 +Vt+ H feet. This formula uses only gravitational force, ignoring air friction. It is valid

    asked by deana
  60. CHEM

    If the heat from burning 5.800 g of C6H6 is added to 5691 g of water at 21 °C, what is the final temperature of the water? 2C6H6(l) +15O2 (g)----> 12CO2(g)+6H2O(l) +6542

    asked by Akle
  61. Math

    The Oliver Company plans to market a new product. Based on its market studies, Oliver estimates that it can sell up to 2,000 units in 2005. The selling price will be $5 per unit. Variable costs are estimated to be 20% of total revenue. Fixed costs are

    asked by Jamie
  62. physics

    An infinite sheet with a surface charge density of -2.1 micro-coulombs/m2 runs parallel to the x axis. Another infinite sheet a surface charge density of +2.1 micro-coulombs/m2 runs parallel to the y axis. A charge of -4.1 micro-coulombs moves at a 45

    asked by Mandaleigh
  63. Algebra

    State the slope of the lines: a, b, c: a) Y + 8 = x Slope is: b) Y - 8 = 0 Slope is: c) x – 8 = 0 Slope is: PLEASE HELP ASAP

    asked by Tariq Glaster
  64. math

    using this information: if an object is thrown straight up into the air from the height H feet per second then at time tseconds the height of the object is -16.1t^2 +Vt+ H feet. This formula uses only gravitational force, ignoring air friction. It is valid

    asked by deana
  65. Chemistry

    What would happen if MnO2 was mixed with KBrO3 ND 9 M sulfuric acid?

    asked by Nick
  66. Chemistry

    Suppose you have a supply of the following metals: Fe, Ni,Sc, Cr, Au, K. Which of there could be mixed to make substitutional alloys? Which metals are incompatible for this purpose. Clearly explain why there metals would be incompatible. I am unsure about

    asked by Lindsey
  67. finance

    The target capital structure for QM industries is 39% common stock, 9% preferred stock and 52% debt. If the cost of common equity for the firm is 18.8%, the cost of preferred stock is 9.7%, the before tax cost of debt is 8.6%, and the firm 's tax rate is

    asked by shirley
  68. Physics

    the decibel level of a person talking in a room is 65.0 dB relative to the threshold of hearing determine the decibel level if 6 people talk in the room each at this level

    asked by Cookie
  69. statistics

    SAT I scores around the nation tend to have a mean scale score around 500, a standard deviation of about 100 points, and are approximately normally distributed. What SAT I score within the population would have a percentile rank of approximately 99?

    asked by babyfly04
  70. ORGANIG CHEMISTRY

    SUPPOSE .1g OF A AND 1.0ml WATER WERE MIXED AND HEATED TO 80 DEGREE CELCEOUS.WOULD ALL THE SOLID DISOLVED.AND IF THE SOLUTION IS COOLED AT WHAT TEMPARATURE CRYSTALS WILL APPEAR.

    asked by SAMIRA
  71. ORGANIC CHEMISTRY

    WHAT ARE THE DEFINITION OF DRYING AGENT;DELIQUSCENT SUBSTANCES;HYGROSCOPIC SUBSTANCES;EFFLORESCENT SUBSTANCES.

    asked by SAMIRA
  72. Calculus 2

    Find c>0 such that the area of the region enclosed by the parabolas y=x^2−c^2 and y=c^2−x^2 is 90.

    asked by Rebecca
  73. Maths

    Dots are arranged to form pattern as show below: pattern 1 they are 2 pattern 2 they are 5 pattern 3 (a) how many dots are in the 4th, 5th, 11th, 200th patterns?

    asked by Vuyo
  74. Physics

    An aluminum wire of diameter 2.47 mm carries a current of 12.9 A. How long on average does it take an electron to move 10.5 m along the wire? Assume 3.50 conduction electrons per aluminum atom. The mass density of aluminum is 2.70 g/cm3 and its atomic mass

    asked by jason
  75. chemistry

    Arrange the following three water solutions according to decreasing osmotic pressure

    asked by Anonymous
  76. Calculus

    The area of a floating circular oil spill in the ocean is increasing at a rate of 96pi square meters per second. When the area of the spill is 1000pi how fast is the radius increasing in meters per second.

    asked by Scooby10
  77. physics

    Betty Bodycheck (mB = 50.2 kg, vB = 22.0 km/h in the positive x-direction) and Sally Slasher (mS = 45.2 kg, vS = 28.0 km/h in the positive y-direction) are both racing to get to a hockey puck. Immediately after the collision, Betty is heading in a

    asked by sara
  78. physics

    A rock of mass 44 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 258 N. What is the magnitude of the acceleration of the rock?

    asked by Anonymous
  79. Physics

    What would the equation be for this problem: A bicyclist accelerates at 0.89 m/s/s during a 5 s interval. What is the change in the speed of the bicycle and bicyclist?

    asked by Alyonka
  80. English Home Language

    Can You Please Give Me Points as To How to add persuasive points to my speech " Women Should Rule The Way" I Already said they more Patient and better communcaters

    asked by Janet
  81. Trigonometry

    If A + B + C = 180°, Prove that Sin² (A/2) + sin² (B/2) - sin²(C/2) = 1 – 2cos (A/2) cos (B/2) sin(C/2)

    asked by Kewal
  82. algebra

    Cut a piece of paper to form a triangle shape. Tear off the three corners of the triangle. Then put the three corners together. Describe what you see. What mathematical truth does this activity illustrate? Explain

    asked by lucy
  83. us history

    hey, i am trying to do my history review sheet and i can't seem to find #2 the question is: "What was the result of interchangeable parts and mass production?" can someone plz help me!!!!!!!!! THANK YOU SO MUCH!

    asked by sammie doodles :-)
  84. Language Arts

    I need help. I cannot figure out the anologies. They are... Colloquy:Loquacious:: Somnambulism:ambulatory Plateau: flat octahedron:eight toponym: noun Thanks

    asked by Kelli
  85. College Algebra

    Solve the problem. Jon has 1162 points in his math class. He must have 86% of the 1500 points possible by the end of the term to receive credit for the class. What is the minimum number of additional points he must earn by the end of the term to receive

    asked by Jess
  86. Biology

    Give diffferences/contrast between a Marine environment and an estuarine environment.

    asked by Mae
  87. fullerton

    A vertical container with base area measuring 12 cm by 18 cm is being filled with identical pieces of candy, each with a volume of 50.0 mm3 and a mass of 0.0200 g. Assume that the volume of the empty spaces between the candies is negligible. If the height

    asked by brandon
  88. physics

    A softball pitcher throws a ball by swinging his arm with an angular speed of 9.81 rad/s. If the pitchers arm is 0.640 m long, what is the tangential speed of the ball just before the pitcher releases it?

    asked by Anonymous
  89. Physics

    Wheel A of radius ra = 13.9 cm is coupled by belt B to wheel C of radius rc = 34.3 cm. Wheel A increases its angular speed from rest at time t = 0 s at a uniform rate of 5.7 rad/s2. At what time will wheel C reach a rotational speed of 168.2 rev/min,

    asked by Marc
  90. Science

    During a football match, the ball shot towards the goal struck the defender's foot at the speed of 10m/s and it bounced back at 20m/s. If the time of impact was 0.2 sec, and mass of the ball 0.5 kg,then find the average force exerted by defender on the

    asked by Kushagra
  91. Chemistry(Please check)

    1) The molecular mass of a substance was determined by the freezing point depression technique. The minimum data required for the determination are: a) delta T and Kf only b) delta T, Kf, and mass of solute c) delta T, Kf, mass of solute, and mass of

    asked by Hannah
  92. physics

    An infinite sheet with a negative surface charge density runs parallel to the x axis. Another infinite sheet with an equal but opposite sign surface charge runs parallel to the y axis. The difference in electric potential from the point x = +5.2 m, y =

    asked by Mandaleigh
  93. calculus

    Let f(x) be the function 1/x+5. Then the quotient f(6+h)−f(6)/h can be simplified to −1/ah+b for: a= 11 b= I did all the work to get a but for some reason the number that I keep getting for "B" is wrong

    asked by cassie
  94. ENGINEERING

    100 lb of loose gravel can fill a 1-ft^3 box. Its specific gravity is 2.68. What is the dry rodded weight? Find the volume of voids in the preceding problem.

    asked by GSU
  95. earth

    An object on earth weighs 6 times what it would weigh on the moon. An object weighs 72 pounds on earth. Write multiplication equation to find the weight of object on moon.

    asked by Anonymous
  96. Chemistry

    Molar volume of an ideal gas at S.A.T.P. (25oC and 1.00 bar is 24.8 dm3 mol-1. Assume that gases are at 225oC and P=1.00 atmosphere before and after the combustion and behave as ideal gases. The chemical equation for the combustion of butane is: 2C4H10(g)

    asked by JRMM
  97. Chem

    DrBob222, I got an answer of 33 and 24.23 as the temperature but it is incorrect. I looked at your response to David and unfortunately it did not help me. Would you please take a look at this question and help me out. Thanks. If the heat from burning 5.800

    asked by Akle
  98. new american gov't 2

    The term, _____ , refers to the potential benefit a person gives up when he or she decides to do one thing instead of another.

    asked by nicole
  99. math

    4x+3y=12

    asked by Anonymous
  100. Math

    We are currently studying "earning money" for math. I read this sentence: When a store claculates its profit as a percentage of its cost price the profit is always bigger than the profit calculated as a percentage of the selling price. What does it mean

    asked by Jason
  101. chemistry

    if 1.2x10^24 molecules of water freeze how much energy is released by the water according to the equation below? - H2O(l)-> H2O(s);ΔH=-6KJ

    asked by sarah
  102. math

    divide eight pounds of sand into twelve equal containers. how much in each container?

    asked by chris
  103. physics

    A rock of mass 32 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 275 N. What is the magnitude of the acceleration of the rock?

    asked by cody
  104. CHEM

    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 the solution to rise from 24.07 °C to 28.70 °C. If the solution has the same density and specific heat as water,

    asked by Akle
  105. physics

    What does it mean when they say that action equals reaction?

    asked by elise
  106. Algebra 1

    A line passes through (4,2) and is parallel to the graph of x= -3. What equation represents the line in slope-intercept form? It doesn't give me enough information to turn it into slope-intercept form. HELP ME PLEASE!!??!!

    asked by Dayana
  107. physics

    Betty Bodycheck (mB = 50 kg, vB = 22.0 km/h in the positive x-direction) and Sally Slasher (mS = 45.2 kg, vS = 28.0 km/h in the positive y-direction) are both racing to get to a hockey puck. Immediately after the collision, Betty is heading in a direction

    asked by sara
  108. Physics

    A silver wire and a platinum wire of the same length have the same resistance. What is the ratio of the diameter of the silver wire to that of the platinum wire. I did 10.6E-8/1.59E-8 but am not getting correct answer?

    asked by jason
  109. Algebra

    during the first part of a canoe trip the canoe travels 71 miles at a certain speed. The canoe travels 7 miles on the second part of the trip at a speed 5mph slower. The total time of the trip is 3 hours. what are the speed in each part of the trip?

    asked by julie
  110. Algebra

    Show work to change the linear equation below to slope-intercept form and then, list the slope and y intercept coordinate for the: (leave answers as an integer or a fraction in improper form). 20+3x-8y=0

    asked by Tariq Glaster
  111. Math Log #3

    a vertical translation of f(x)=e^x changes its asymptote? Sometimes, always or never??

    asked by beyonce knowles
  112. accounting

    competitor companies that are U.S. GAAP publicly traded companies.

    asked by Merrill
  113. Physics

    A rocket of mass 4.5 e5 kg is in flight. Its thrust is directed at an angle of 58.5° above the horizontal and has a magnitude of 7.50e6 N. Find the magnitude and direction of the rockets acceleration. Give the direction as an angle above the horizonal.

    asked by Joe
  114. Chemistry

    If water is synthesized how much hydrogen would be needed to make 10.0 grams?

    asked by Cathy
  115. chm

    An unknown radioactive substance has a half-life of 3.20 . If 34.8 of the substance is currently present, what mass was present 8.00 hours ago?

    asked by cp
  116. English

    I left out the last interview. I need to summarize the interview in a few sentences rephrasing the colloquial expressions I'm not sure of. Could you please help me here, too? Thank you. "This isn't always easy but if you know before the interview, it's

    asked by Henry2
  117. math

    In a right triangle ABC, C = 90°, b = 380.1 inches and c = 589.1 inches. Solve for all the missing parts using the given information. (Round each answer to one decimal place for side and to two decimal places for angles.) A = ° B = ° a = __inches IM

    asked by Anonymous
  118. trig

    If theta is an angle in standard position, state in what quadrants its terminal side can lie if theta is equal to -415 degrees?

    asked by Rick
  119. English

    Writeacher, I wanted to thank you for all what you have done for me and for my professional growth. We have worked really hard on the project over the last few days (though I was in bed with flu!) By the way, I used your suggestion as a title for the whole

    asked by Henry2
  120. math

    The plane is at least 500 miles closer to chicago than to denver

    asked by jack
  121. For Henry2 - English

    http://www.jiskha.com/display.cgi?id=1328824198 Or have you already taken care of this?

    asked by Writeacher
  122. English - Native speakers

    Please paraphrase the phrase into a bit simpler English involving arrested development of engorged stages or of eggs.

    asked by Mark
  123. chemistry

    What would happen if chlorine water was added to an aqueous solution of sodium chloride?

    asked by Lucas
  124. math for elem. teacher

    Explain why the product of any two consecutive natural numbers is even.

    asked by ally
  125. Statistics

    A box contains four balls labeled 1,2,3,4 respectively. Two balls will be sequentially selected from the box at random without replacement. Let Y1 be the maximum of two outcomes and Y2 be the minimum of two outcomes observed. Find the joint probability

    asked by Ed
  126. math

    How do u solve 1/2 times 9.8 times 4 exponent 2

    asked by suzzi
  127. algebra 1

    Delilah buys an $18,000 car for her catering business. The equation below shows her earnings after each catering event, where x represents the number of hours worked. y=18x 150 If each event is approximately 5 hours long, about how many events must Delilah

    asked by Lalt
  128. Chemistry(Please check)

    1)For electrolyte solutions, the _____ the concentration of the electrolyte and the ____ the ion charges, then the ____ the ion-pairing. a) lower, smaller, greater b) higher, smaller, smaller c) higher, greater, greater d) lower, greater, smaller e) lower,

    asked by Hannah
  129. Chemistry

    Calculate pH when 0.060 mols of HCl are added to 1.000 L of a buffer containing 0.499M KH2PO4 and 0.193M K2HPO4

    asked by Jenn
  130. Calculus

    If 2x^3 + 2xy - y^2 = 6, then approximate the equation of the tangent line at point x = 1.44

    asked by Scooby10
  131. Calculus

    If f(x) = (square root of (3x^2 - 5x + 7)), then f'(2) =

    asked by Scooby10
  132. math

    in a right triangle ABC, C = 90°, a = 33.6 inches and b = 28.4 inches. Find B. Write your answer in decimal degrees (Round your answer to one decimal place.) B =

    asked by Anonymous
  133. Calculus

    What is the state of the function f at x = 2? F(x) = [x^3 for x < 2; 5x - 2 for x > or = to 2] ?continuous or differentiable both or neither one or the other?

    asked by Scooby10
  134. English

    I need to rephrase (using indirect speech) what 4 people said is important when preparing to go for an interview. Could you please help me? 1)Speaker 1 recommends one should make a short list of the job’s requirement (or requirement for/in the job

    asked by Henry2
  135. English

    Here is interview 4. Could you please help me rephrase it, especially the part with (??) which I can't understand. 5)Speaker 4 is again very colloquial. “I’ve had quite a few interviews for, let’s see, about 4 jobs. So I was getting a bit blasé

    asked by Henry2
  136. math

    This week’s focus is on systems of equations. Describe a profession that might use this on a regular basis, and give an example with a solution (not covered in the text) of a math problem with a real-life application.

    asked by Leo
  137. PHYSICS

    7809.5 cm3

    asked by MOHIT
  138. math

    4x+3y=12

    asked by Anonymous
  139. trig

    I don't understand this. can you please tell how you got each answer? describe how the graph of each function is related to a basic trigonometric graph. 1. y= 1/2cos x 2. y= 2cos x+1 3. y= sin x-4 4. y= sin(x-4) 5. y= sin(3x) 6. y= cos(1/2x) 7. y= -cos x

    asked by BreAnne
  140. Chemistry

    what is the concentration of hcl when 55 ml of this hcl solution neutralize 15ml of .9m ca(oh)2

    asked by Faith
  141. Analytic geometry

    Write in general form, the equation of the straight line that passes through the points A(-6, -1) and B(2,2)

    asked by Harry
  142. ORGANIC CHEMISTRY

    NAME THE PROCESSES OR TECHNIQUES IN THE FOLLOWING. 1.SEPARATION OF A SOLID FROM A SOLUTION 2.WHEN WATER IS COLD TO FORM ICE 3.WHEN WATER IS BOIL TO FORM VAPOR 4.WHEN IODINE IS HEATED DIRECTLY TO FORM GAS WITHOUT BEING LIQUID 5.WHEN STEAM IS COLD TO FORM

    asked by SAMIRA
  143. try this

    what song is this from: Everybody seems to look at you, Its not because your different, its just because your so scay cool, the sinister style---------------, you dropped it gorgeous, dropped it gorgeous, that's where the cool kids rule!

    asked by emily
  144. business

    1. The appearance of a document can do all of the following EXCEPT: a.establish rapport with the audience. b. guide your readers' attention. c.substitute for the written text in the document.(*) d. build goodwill. 2. The design of a document reflects on

    asked by sososola2012
  145. DANCE :D

    ok, i am in a dance team called Gingham Girls, and my director told me i need to stretch more on my left for my left splits. but i can't seem to get them and its hard for me to stretch on my left! and ideas? i already have my right splits! THANKS EVERYONE

    asked by sammie doodles :-)
  146. ramirez

    A box slides down a 37° ramp with an acceleration of 1.24 m/s2. Determine the coefficient of kinetic friction between the box and the ramp.

    asked by joana
  147. Calculus

    Find the derivative, with respect to x of y = 7x^2 + 3x + 2

    asked by Taylor
  148. Calculus

    Find the derivative of y = 3x+2/x+1

    asked by Hank
  149. EXP 105

    I need help on how to write a practical context paragraph

    asked by Maryann
  150. accounting

    Research/Ratio Assignment:Choose two competitor companies that are U.S. GAAP publicly traded companies. Determine and compare their net profit margin and debt to asset ratio for the most recent year reported. Interpret the information and support your

    asked by Merrill
  151. physics

    a runner who has a mass of 52 g , has a momentum of 218 kg/m/s along a trail. what is the runners velocity?

    asked by ariel
  152. Literature

    The best kind are but shadows is

    asked by Beverly
  153. Physics

    How long does it take a motor cyclist to come to rest?which travels at 12m/s decelerates at 3m/s^2

    asked by Kenneth
  154. Calculus

    Find the positive value of x where fx=x3+2x1/3 has a horizontal tangent line. Answer =

    asked by TG
  155. Math

    Determine the values of x for which the function f(x) = 3/(√x^2+3x-4) is continuous.

    asked by Matthew
  156. TRIG

    In a right triangle ABC, C = 90°, b = 380.1 inches and c = 589.1 inches. Solve for all the missing parts using the given information. (Round each answer to one decimal place for side and to two decimal places for angles.) A = ° B = ° a = inches IM lOST!

    asked by Anonymous
  157. Human Services

    I have a problem with APA formatting and how to cite Example 1 According to McNamara, n.d The Question---my answer Or do I need to cite each question The amount of questions are about 100

    asked by Mary
  158. physics

    how much magnetic force does it take to move a 2000lb car?

    asked by Anonymous
  159. math

    how can i make the target number 670,just by using the following digits. 6,9,6,5,9,50

    asked by maria
  160. MATH

    Angle C and Angle D are vertical angles. The conclusion is that angle C and angle D are complementary. Which is a counterexample of this conclusion. * 2 vertical angles which are not complementary or * 2 complementary angles which are not vertical

    asked by Millie
  161. Calculus (Antiderivatives)

    What is the antiderivative of? (x^2 - 4) / (x - 2)

    asked by Mishaka
  162. Tourism

    why is it important that the sport industry and the tourism industry have a good relationship? And what is the relationship between them?

    asked by Jenny
  163. physics

    A toy train is pushed forward and released at = 4.0 with a speed of 1.5 . It rolls at a steady speed for 2.6 , then one wheel begins to stick. The train comes to a stop 5.2 from the point at which it was released.

    asked by Anonymous
  164. biology

    1. explain that not all cell genes show simple patterns of dominant and recessive alleles. 2. explain how to identify th blood types of an offspring. 3. discuss how gender in humans is determined.

    asked by diane28
  165. algebra

    A student wrote – 3 > x > 5 as the inequality that represents the real numbers less than – 3 or greater than 5. Explain why this is incorrect.

    asked by lucy
  166. Mathematics

    Last year Jim's gross weekly pay was $920 and he received $520 in bank interest. HIs taxation deductions totalled $1370. a) Calculate Jim's gross income for last year. b) How much was Jim's taxable income? c) Jim's Medicare levy was 1.5% of his taxable

    asked by CrissyXD
  167. MATH

    n a right triangle ABC, C = 90°, A = 41° and c = 67 cm. Find b. (Round your answer to the nearest whole number.) b =

    asked by Ben
  168. Calculus

    Integrate the following (x^5 - 2)dx

    asked by Taylor
  169. ms. sue

    ms. sue u please be able to give me title for essay on love. i not want to call it plain true love.

    asked by Mohammad
  170. marketing

    For each of the following statements, identify the type of market it describes. Use an example from the readings or the internet for each characteristic and explain your choice. A. The company practices product differentiation B. The firm earns an economic

    asked by natalee
  171. statistics

    What probability value should be used for determining whether the modified process results in a defect rate that is less than 6%. I got part a and b of the question but I am completely lost on what this is asking me. Can anyone help?!?

    asked by Josh
  172. Physics

    What are the three factors on which thermal energy depends?

    asked by SMK
  173. Education

    how much influence do you believe the government should have in deciding what is or is not being taught?

    asked by Millie
  174. algebra

    Find the slope of the line containing the pair of points (7,5) and (8,-3)

    asked by jim
  175. ms. sue

    ms. sue i need help with one sentence in love story i be writing about. i write the sentence: if personalities don't match, and the characters are opposite, then each will follow different directions which will cause a split in the relationship. my friend

    asked by Mohammad
  176. English

    Marion needs to believe in a ____ ?

    asked by Oi
  177. calculus

    when does vector (a+b) = (a-b) mean? explain

    asked by kally
  178. Psychology101

    As a consumer of mental health services, which type of therapy would you prefer if you did not like to talk about your problems? If you were suffering from a phobia? If you had recurring nightmares since childhood? If you wanted to improve your marriage?

    asked by John P
  179. geometry

    true or false Given:

    asked by jan
  180. English

    Could you please check this sentence? As I haven't heard from you, I'll email the module, you sent to me this morning, to my secretary's office myself(without making ANY CHANGES AT ALL)

    asked by Henry2
  181. Math

    Find the volume of the solid generated by revolving the region bounded by y= 5 cosh (x) and y= 5 sinh (x) between x = 0 and x = 1 about the x-axis

    asked by Jose
  182. spanish

    What does this mean? El tan Hermosillo question pienso en to todos Los dias

    asked by keisha
  183. Calculus

    when does vector (a+b) = (a-b)? explain

    asked by k2k
  184. english

    what is song about determintation

    asked by kid
  185. Calculus

    Examine the continuity of the function h(x)=[-x, if x0 I don't understand this question...

    asked by Jake
  186. Calculus

    If y = (ln(x-2))/(3e^x, then dy/dx =

    asked by Scooby10
  187. Calculus

    Find the domain of f(x) = (square root (x^2 - 16))/(x + 2)

    asked by Scooby10
  188. chemistry

    how many seconds would it take to go from 0mi/h to 60 mi/h with an average acceleration of 15mi/h squared

    asked by lexus
  189. Science

    According to Peter Saundry, there is no true universal code of ethics because standards of conduct vary from place-to-place and time-to-time

    asked by Anonymous
  190. math

    determine the domain of the real valued function f(x) = sqrt(5 - (sqrt5))

    asked by mary