Questions Asked on
November 4, 2012

  1. English

    What grammatical structure is the italicized portion of the sentence? 1. (Headed by a senior), the group drew up rules for School Spirit Week. - nominative absolute 2. My most valuable coin, (one from Spain), is worth more than $100.00. - prepositional

    asked by Courtney
  2. Chemistry

    According to the Star Trek "Fifth Interstellar Geophysical Conference Standard" version of the periodic table, there are 140 known elements. In what group of the periodic table would you place element 117, "topaline" which is reported to have been

    asked by Anonymous
  3. Chemistry

    What is the generic outer electron configuration for the alkali metals?

    asked by Anonymous
  4. Physics

    The carnival ride shown in Figure 7-18 has a 2.0 m radius and rotates once each .90 s a. Find the speed of the rider. b. Find the centripetal acceleration of the rider. c. What produces this acceleration? SOLUTIONS PROVIDED: a. 141 b. 98 c. --Explain--

    asked by Troubled
  5. Chemistry

    A Gouy balance is used to determine the magnetic susceptibility of a substance. A strong electromagnet is placed next to the sample, which is on a balance. If the sample is paramagnetic, the mass reading of the balance will increase when the field is

    asked by Anonymous
  6. Calculus

    Squares with sides of length x are cut out of each corner of a rectangular piece of cardboard measuring 3 ft by 4 ft. The resulting piece of cardboard is then folded into a box without a lid. Find the volume of the largest box that can be formed in this

    asked by Allison
  7. chemistry

    A fuel mixture used in the early days of rocketry is composed of two liquids, hydrazine (N2H4) and dinitrogen tetraoxide (N2O4), which ignite on contact to form nitrogen gas and water vapor. 2 N2H4 + N2O4 --> 3 N2 + 6 H2O If 1.50 x 102 g of N2H4 and 2.00 x

    asked by Sheree'
  8. physics

    A coin rests 15.0 cm from the center of a turntable. The coefficient of static friction between the coin and turntable surface is 0.390. The turntable starts from rest at t = 0 and rotates with a constant angular acceleration of 0.630 rad/s2. (a) After

    asked by Anonymous
  9. AP chemistry

    How many moles of Cu are produced when 0.25 moles of Cu2Se are completely reduced by an excess of hydrogen gas?

    asked by Tayler
  10. Physics

    Racing on a flat track, a car going 32 m/s rounds a curve 56 m in radius. What is the force of friction needed for the car to round the curve without slipping?

    asked by Christy
  11. physics

    A fulcrum is placed under the center of a uniform 4.00m long, 3.00kg board. Child A has a mass of 42 kg. This child sits on the left end of the board; Child B has a mass of 26kg. Child B sits on the right end of the board. Where should child C (mass 21 kg)

    asked by Joe
  12. Chemistry

    How much heat is required to raise the temperature of 53.5g of water from its melting point to its boiling point?

    asked by Bird
  13. chem

    Consider 4.80 L of a gas at 365 mmHG and 20 c. . If the container is compressed to 2.90 L and the temperature is increased to 36 c , what is the new pressure, , inside the container? Assume no change in the amount of gas inside the cylinder

    asked by hanah
  14. Chemistry

    Which one of these samples contains the smallest number of molecules? a. 1.0 L of H2 at STP (0°C and 1atm) d. 1.0 L of N2 at 0°C and 800 torr b. 1.0 L of N2 at STP e. 1.0 L of He at STP c. 1.0 L of H2 at 20°C and 760 torr

    asked by Brittany
  15. physics

    A uniform, horizontal beam is 5.00m long and has a weight of 200N. The beam is hinged at one end to a wall. A 600N weight is attached to the order end of the beam. The beam is supported by cable at the end opposite the wall. The cable attaches to the wall

    asked by Joe
  16. Chemistry

    Express your answer as a chemical formula. 1.Cr^-3 and Br^- 2. Fe^3+ and O^2- 3.Hg2^2+ and CO3^2- 4.Ca^2+ and CIO^3- 5. NH^+4 and PO4^3-

    asked by Josh G.
  17. Chemistry

    Consider the reaction when aqueous solutions of manganese(II) sulfate and barium bromide are combined. The net ionic equation for this reaction is:???

    asked by Kristyn
  18. Chemistry

    Lead has a melting point of 327ºC, its specific heat is J/g•deg, and its molar enthalpy of fusion is 4.80 kJ/mol. How much heat, in kilojoules, will be required to heat a 500.0-g sample of lead from 23.0ºC to its melting point and then melt it?

    asked by steph
  19. English

    It is impossible to have an indirect object without a subject, transitive verb, and a(n) _____. noun preposition direct object intransitive verb

    asked by Courtney
  20. Math

    A frictionless spring with a 7-kg mass can be held stretched 1 meters beyond its natural length by a force of 20 newtons. If the spring begins at its spring-mass equilibrium position, but a push gives it an initial velocity of 0.5 m/sec, find the position

    asked by James
  21. Pre- AP Physics

    The earth exerts a force of 1400 N on an orbiting communications satellite that is 35 mi above the Earth. What is the magnitude of the force the satellite will exert on the earth? Answer in units of Newtons

    asked by Jaycee
  22. Chemistry

    Lead has a melting point of 327ºC, its specific heat is J/g•deg, and its molar enthalpy of fusion is 4.80 kJ/mol. How much heat, in kilojoules, will be required to heat a 500.0-g sample of lead from 23.0ºC to its melting point and then melt it?

    asked by steph
  23. physics

    A golfer launches a golf ball off a tee that has been raised 24.8 meters off the ground. If the golfer strikes the ball with a velocity of 26.5 m/s at an angle of 45.8 degrees, how far will the ball carry in the air before hitting the ground below?

    asked by emily
  24. physics

    A duck is floating on water with 26% of its total volume submerged below the surface. If the duck has a mass of 2.6kg, what is the duck’s total volume? You must show all necessary work, the density of water is 1000kg/m3.

    asked by Joe
  25. Statistics

    A random sample of 384 people in a mid-sized city (city one) revealed 112 individuals who worked at more than one job. A second random sample of 432 workers from another mid-sized city (city two) found 91 people who work at more than one job. Find a 99%

    asked by Huh
  26. Pre Calculus

    (cotx)(cscx)+secx=(csc^2x)(secx) Please help to verify this trigonometric identity.

    asked by Marie
  27. Chemistry

    Methanol (CH4O) is converted to bromomethane (CH3Br) as follows: CH4O + HBr --> CH3Br + H2O If 12.23 g of bromomethane are produced when 5.00 g of methanol is reacted with excess HBr, what is the percent yield?

    asked by Brittany
  28. Math

    Joan won a multi-million dollar lottery. She decides to give $1 000 000 of her winnings to charity. Her plan is to give 1/2 , or 2^-1 , to charity in January, and then give half of the remaining amount in February, half again in March, and so on. a) What

    asked by Anonymous
  29. Chemistry

    How many molectules are in a 64.3 mg sample of tetraphosphorus decoxide, P4O10?

    asked by Anonymous
  30. singapore moth

    Place the following digits in the boxes so that the sum of the digits in each straight line is the same. This is like a crossword 3 boxes across and 3 boxes down then 3 boxes across and 3 boxes down using digits 1,2,3,4,5,6,7,8,9. please help with answer.

    asked by lori
  31. College Physics

    In 1986, the distance of closest approach of Halley’s comet to the Sun is 0.57AU. (1 AU is the mean Earth-Sun distance = 150 million kilometers.) The comet’s speed at closest approach is 54.97 km/s. (a) – By 1989, Halley’s comet had traveled to a

    asked by johnathan
  32. chem 1A

    Balance the following oxidation-reduction reactions, which occur in acidic solution, using the half-reaction method. (Use the lowest possible coefficients. Include states-of-matter under the given conditions in your answer.) (a) Cu(s) + NO3‾(aq) →

    asked by Anonymous
  33. statistics

    The U.S. Dairy Industry wants to estimate the mean yearly milk consumption. A sample of 20 people reveals the mean yearly consumption to be 72 gallons with a standard deviation of 15 gallons. What is the 99% confidence interval?

    asked by Anonymous
  34. Physics

    A ball of mass 0.1 kg is suspended vertically from the ceiling with a "massless" string and brought to rest. The string is one meter long. When a force of 0.5N is applied 45 deg. below the horizontal, what will be the magnitude of the resulting angular

    asked by Guy
  35. physics

    You see an optical illusion of an ever-upward spiral staircase. The climber trudges up and up and never gets anywhere, going in circles instead. Suppose the staircase is provided with a narrow ramp, allowing the tired stair-climber to push a wheelbarrow up

    asked by Lance
  36. physics

    A paperweight weighs 6.9N in air. When it is completely submerged in water it appears to weigh 4.3N. A) What is the volume of the paperweight? B) What is the density paperweight? The density of water is 1000kg/m3.

    asked by Joe
  37. Chem

    A metal whose threshold frequency is 1.80×1015 s-1 emits an electron with a velocity of 7.24×105 m/s when radiation of 2.13×1015 s-1 strikes the metal.Use these data to calculate the mass of the electron.

    asked by Taani
  38. statistics

    The U.S. Dairy Industry wants to estimate the mean yearly milk consumption. A sample of 20 people reveals the mean yearly consumption to be 72 gallons with a standard deviation of 15 gallons. What is the 99% confidence interval for the population mean?

    asked by Jelian
  39. Chemistry

    Calculate the mass of CO2 emitted (in lbs) when 1 gallon of octane is burned

    asked by Sara
  40. CHEM 1A

    Balance the following oxidation-reduction reactions, which occur in acidic solution, using the half-reaction method. (Use the lowest possible coefficients. Include states-of-matter under the given conditions in your answer. H3AsO4(aq) + Zn(s) → AsH3(g) +

    asked by Anonymous
  41. earth

    If you had a mole of M&M's, how many times could you cover the surface of the earth ?

    asked by Anonymous
  42. chem1A

    Balance the following oxidation-reduction reactions, which occur in acidic solution, using the half-reaction method. (Use the lowest possible coefficients. Include states-of-matter under the given conditions in your answer.) (b) Cr2O72-(aq) + Cl ‾(aq)

    asked by Anonymous
  43. physics work and newton

    A 2.0 kg object starts from rest from the top of an inclined plane that makes an angle of 30 degrees with the horizontal and has a rise of .4m. It slides down the inclined plane and at the bottom has a kinetic energy of 60J. Ignore friction and use g =

    asked by naf
  44. statistics

    In one town 76% of adults have health insurance, find the probability that 8 adults selected at random from the town all have health insurance. would it be unusual to select 8 people and find they all have health insurance. and why?

    asked by nicole
  45. Q&A Check Please, geo 7th grade

    Many of the mineral deposits and oil reserves in Nunavut, the Yukon, and the Northwest Territories have not been developed because a. environmental laws prohibit the mining of land in these territories. b. native Inuit refuse to give up their lands. c. the

    asked by rawr... im a dinosaur.... rawr
  46. physics work and newton

    A person of mass 84kg is at rest at the bottom of an inclined plane that makes an angle of 30 degrees with the horizontal. he walks up the inclined plane through a certain distance and has a speed of 0.40 m/s. How much net work has been accomplished in

    asked by naf
  47. Math

    The distance between two towns on a map varies directly with the actual distance between the towns. Seven and a half inches on the map represents 150 miles. What is the actual distance represented by 11 inches on the map?

    asked by M
  48. Chemistry

    Au^3+ + 3e^- ---> Au Is this oxidation or reduction? Which reactant has been oxidized? Au3+ (aq)+ 3Na(s)--->3Na^+(aq)+Au(s) 2.Which reactant has been reduced 3.What is the reducing agent? 4.what is the oxidizing agent? I am having a hard time understanding

    asked by kourtney
  49. physics

    The wind exerts a force of 305 N North on a sailboat, while the water exerts a force of 123 N West on the sailboat. What is the magnitude of the net external force on the sailboat? Answer in units of N

    asked by Anonymous
  50. physics

    A 0.112 kg meterstick is supported at its 38.6 cm mark by a string attached to the ceiling. A 0.655 kg mass hangs vertically from the 4.74 cm mark. A mass is attached somewhere on the meterstick to keep it horizontal and in both rotational and

    asked by Krystal
  51. physics

    A 2000 kg truck is at rest at a stop sign. A 1100kg car collides head-on with the truck. The car was moving at 15.0m/s before the collision if the collision was completely inelastic, what is the velocity of the car and the truck after the collision?

    asked by Joe
  52. Physics B

    A coordinate system (in meters) is constructed on the surface of a pool table, and three objects are placed on the coordinate system as follows: a 1.5 kg object at the origin, a 3.4 kg object at (0 m,1.8 m), and a 4.5 kg object at (4.2 m,0 m). Find the

    asked by Mary
  53. chemistry

    2 Al + 3 S --> Al2S3 In an experiment 10.0 g Al is combined with 15.0 g S. If the reaction continues until one reactant is totally consumed, which reactant would be in excess and how many grams would be unreacted?

    asked by Sheree'
  54. Chemistry

    2 CH3Cl + Si --> (CH3)2SiCl2 If 170 g of CH3Cl and 143 g of Si are mixed together, what is the maximum amount (in grams) of (CH3)2SiCl2 that can be formed?

    asked by Sheree'
  55. Narrative Essay

    Could someone give me some good tips in writing a narrative essay about a certain memory or experience? Tips like, how to realize when there's too much detail and what are common faults in a highschooler's narrative?

    asked by Claire
  56. chemistry

    A student determines the zinc content of a solution by first precipitating it as zinc hydroxide, and then decomposing the hydroxide to zinc oxide by heating. How many grams of zinc oxide should the student obtain if her solution contains 42.0 mL of 0.566 M

    asked by Anonymous
  57. chemistry

    a 55g aluminum block initially at 27degrees C absorbs 725J of heat. What is the final temp. I know I need to use the equation q=m*Cs*Delta T but I cannot figure out how to rearrange the equation to isolate Tf to get the answer. Thanks for any help.

    asked by Dee
  58. Math

    In a lightning storm, the number of seconds between the flash and the bang varies directly with the number of miles you are from the lightning. It takes 15 seconds for the thunder sound to reach you from lightning that is 3 miles away. If the thunder sound

    asked by M
  59. CHEM 1A

    Balance the following oxidation-reduction reactions, which occur in acidic solution, using the half-reaction method. (Use the lowest possible coefficients. Include states-of-matter under the given conditions in your answer.) Br ‾(aq) + MnO4‾(aq) →

    asked by Anonymous
  60. Physics

    Janet jumps off a high diving platform with a horizontal velocity of 1.65 m/s and lands in the water 1.8 s later. How high is the platform? The acceleration of gravity is 9.8 m/s2. How far from the base of the platform does she land? Answer in units m

    asked by Braedon
  61. multi step equations

    Joel has twice as many cds as Mary has. Subtracting 7 from the number of cds Joel has and dividing by 3 equals the number of cds Blake has. If Blake has 25 cds, how many cds does Mary have?

    asked by paul
  62. physics

    A 0.112 kg meterstick is supported at its 38.6 cm mark by a string attached to the ceiling. A 0.655 kg mass hangs vertically from the 4.74 cm mark. A mass is attached somewhere on the meterstick to keep it horizontal and in both rotational and

    asked by Krystal
  63. physics

    A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless

    asked by jim
  64. algebra

    If $1000 is invested in an account that earns 11.75%, compounded annually, what will the account balance be after 12 years?

    asked by sara
  65. Q&A Check Please, geo 7th grade

    Which of the following is an accurate statement about the economy of the Atlantic Provinces? a. Tourism is the region’s major economic activity. b. A recent economic slump has resulted in a large decline in the population of the region. c. Forestry and

    asked by rawr... im a dinosaur.... rawr
  66. Physics

    A small 0.469-kg object moves on a frictionless horizontal table in a circular path of radius 1.42 m. The angular speed is 6.31 rad/s. The object is attached to a string of negligible mass that passes through a small hole in the table at the center of the

    asked by Ben
  67. Algebra

    An investor invested a total of 2900 in two mutual funds. One fund earned a 9% profit the other earned a 5% profit. If the investors total profit was $217 how much was invested in each mutual fund.

    asked by Alisha
  68. physics

    A 20.7 cm screwdriver is used to pry open a can of paint. If the axis of rotation is 2.25 cm from the end of the screwdriver blade and a force of 29.3 N is exerted at the end of the screwdriver’s handle, what force is applied to the lid? Answer in units

    asked by Krystal
  69. physics

    A team of dogs drags a 119 kg sled 2.1 km over a horizontal surface at a constant speed. The coefficient of friction between the sled and the snow is 0.172. The acceleration of gravity is 9.8 m/s 2 . Find the work done by the dogs. Answer in units of kJ

    asked by Anonymous
  70. Healthcare Law & Ethics

    why is the current health care system is in turmoil? Identify one or two major problems of health care and analyze the impact of the problem(s) on patients and the community. Describe the benefits and risks of national health insurance.

    asked by Lee
  71. physics

    A 2000 kg truck is at rest at a stop sign. A 1100kg car collides head-on with the truck. The car was moving at 15.0m/s before the collision if the collision was completely inelastic, what is the velocity of the car and the truck after the collision?

    asked by Joe
  72. physics

    Find the heat flux due to radiation from a gasoline pool fire whose flame is 3 m tall with a 1 m diameter, and it is 3.5 m away from a target fuel. Assume e = 0.98 with a flame temperature of 1,300 K. Solve this problem by determining the configuration

    asked by doris
  73. Calculus

    A particle is moving along the curve . As the particle passes through the point , its -coordinate increases at a rate of units per second. Find the rate of change of the distance from the particle to the origin at this instant.

    asked by Anonymous
  74. english

    What does John say is the one rule in his and Henry’s class? (1 point)

    asked by Anonymous
  75. physics

    Bill the firefighter stands on an 8 meter ladder of weight 355 Newtons leaning against a smooth vertical wall. The ladder makes an angle of 50 degrees with the horizontal floor. The wall cannot provide any frictional force only a normal force. All

    asked by Anonymous
  76. chemistry

    The equilibrium constant Kp for the following equilibrium is 33 at 298 K. What is the value of Kc at this same equilibrium at 298 K

    asked by Brun
  77. physics

    A centrifuge in a medical laboratory rotates at an angular speed of 3300 rev/ min. When switched off, it rotates through 59.0 revolutions before coming to rest. (a) Find the angular speed in rad/s.

    asked by Anonymous
  78. Chemistry

    nitrogen gas is at 2.00. c, 2.00 atm pressure and occupies a volume of 10.01. Assume nitrogen is an ideal gas, how many moles of the gas are present?

    asked by Tomi
  79. physics

    A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 18.0° with the horizontal. A 22.0 kg piece of luggage is

    asked by Anonymous
  80. Physics Help, Please!

    When a car goes around a curve (without skidding), on a level road, Select one: a. no friction force is needed because the car simply follows the road. b. the friction force of the road on the car increases when the car’s speed decreases. c. the friction

    asked by Michael
  81. singapore math

    My 3rd grade son get this math problem. It states that John thinks of a 3-digit number. What is his number? Use the clues below to find John's number. Every digit is different. The sum of all thedigits is 19. The difference between the hundreds digit and

    asked by lori
  82. Sociology

    That a judge has to issue a warrant for a household search derives from ____________. a) probable cause b) substantive law c) procedural law d) mala en se law I believe the answer is (c)

    asked by Tammy
  83. Math

    An 8-ounce weight stretches a spring 10 cm. How much weight will stretch the spring 15 cm?

    asked by M
  84. physics

    A 2000 kg car is rolling at 2.0 m/s. You would like to stop the car by firing a 12 kg blob of sticky clay at it. How fast should you fire the clay? i keep getting 25.8 but apparently that isn't right so i'm at a loss

    asked by kev
  85. physics

    two electric charges +10 microC and -20microC are located .35 m apart how much work is required to double the distance between them?

    asked by Grane
  86. physics

    Part of a roller-coaster ride involves coasting down an incline and entering a loop 27.0 m in diameter. For safety considerations, the roller coasters speed at the top of the loop must be such that the force of the seat on a rider is equal in magnitude to

    asked by Anonymous
  87. calculus

    A 13 foot ladder leaning against a wall makes an angle of degree radians with the ground. The base of the ladder is pulled away from the wall at a rate of 2ft/sec. How fast is degree changing when the base of the ladder is 5 feet way.

    asked by ron
  88. maths

    2. A bar of uniform section is 81.4cm long and weighs 4.45 kg. A weight of 12.8 kg is suspended from one end. The bar weight combination is to be suspended from a cable attached at the balance point. a)Determine how far from the weight should the cable be

    asked by david
  89. physics

    A team of dogs drags a 119 kg sled 2.1 km over a horizontal surface at a constant speed. The coefficient of friction between the sled and the snow is 0.172. The acceleration of gravity is 9.8 m/s 2 . Find the work done by the dogs. Answer in units of kJ

    asked by Anonymous
  90. aberdeen

    To avoid plagiarism in your written research paper, you must provide a citation for which of the following?

    asked by Anonymous
  91. Physics LAST QUESTION

    A beetle whose mass is 2 g sits on a turntable at a distance of 12 cm from the center. The turntable is rotating at 33 rpm. (a) What are its acceleration and the centripetal force on it? a =______ m/s2 Fc=_____ N (b) What is the interaction that provides

    asked by arcos15
  92. math

    Teresa baby-sits for $4.50 an hour. Make a table showing how much money she will make over time.

    asked by cali
  93. physics

    A paperweight weighs 6.9N in air. When it is completely submerged in water it appears to weigh 4.3N. A) What is the volume of the paperweight? B) What is the density paperweight? The density of water is 1000kg/m3.

    asked by Joe
  94. business

    A production run of toothpaste requires a fixed cost of $100,000. The variable cost per unit is $3.00. If 50,000 units of toothpaste will be sold during the next month, what sale price must be chosen in order to break even at the end of the month?

    asked by Anonymous
  95. Math

    One day we decidid to drive from town A to town D.In order to get there,we had to drive through town B and C.It is ten miles farther from town A to town B than it is from town B to town C.It is ten miles farther from town B to town C than it is from town C

    asked by Caleb
  96. physics

    The average distance separating Earth and the Moon is 384,000 km. A 2.6x104 kg spaceship located halfway between them. (b) What is the total potential energy of the ship?

    asked by Anonymous
  97. chem 1A

    Balance the following oxidation-reduction reactions, which occur in acidic solution, using the half-reaction method. (Use the lowest possible coefficients. Include states-of-matter under the given conditions in your answer.) Mn2+(aq) + NaBiO3(s) →

    asked by Anonymous
  98. Math

    in the number 7,725,which places contain digits where one digit is ten times greater than the other?

    asked by Brooklynn
  99. calculus

    let f(x) = 2x^5-5x^4 find open intervals on which f is a) increasing b)decreasing Find values of x at which f has c) relative max and min find open intervals d) concave upward e) concave downward c) find the inflection points of f

    asked by Martha
  100. statistics

    A random sample of 250 men yielded 175 who said they'd ridden a motorcycle at some time in their lives, while a similar sample of 215 women yielded only 43 that had done so. Find a 99% confidence interval for the difference between the proportions of men

    asked by John
  101. Psychology -- Check please?

    According to Solomon Asch's study of conformity, which of these situations would not increase conformity? feeling insecure feeling you have reached your potential feeling impressed by a group's status feeling that others are watching you feeling that

    asked by Lily
  102. writing

    PLEASE PROOF READ IT WILL BE DOUBLE SPACED WHEN I SUBMIT IT. In approximately 200–350 words, using compare/contrast strategies, discuss the benefits and/or advantages of shopping online, rather than shopping in a store. The Benefits of Online Shopping

    asked by AMW
  103. chemistry

    Given the reaction: H2SO4 = 2NaOH -> NaSO4 = 2H20. Determine the # of moles of sulfuric acid id needed to completely react with 2.3 L of 0.5 M of NaOH. Then determine the concentration of the solution if 3.0 L of it are used instead.

    asked by sarah
  104. Chemistry

    a 9.85 g sample of an unknown metal M is burned in the presence of excess oxygen, producing the oxide M2O3 (s) and liberating 57.8kJ of heat at constant pressure. What is the identity of the metal? 4M(s) + 3O2(g) yields 2M2O3(s)

    asked by Kelly
  105. Calculus

    A particle is moving along the curve . As the particle passes through the point , its -coordinate increases at a rate of units per second. Find the rate of change of the distance from the particle to the origin at this instant.

    asked by Anonymous
  106. Calculus

    A particle is moving along the curve . As the particle passes through the point , its -coordinate increases at a rate of units per second. Find the rate of change of the distance from the particle to the origin at this instant.

    asked by Anonymous
  107. physics

    A 7.45-g bullet is moving horizontally with a velocity of +348 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is

    asked by greg
  108. Calculus

    At a given moment, a plane passes directly above a radar station at an altitude of 7 miles. (a) If the plane's speed is 400 mph, how fast is the distance between the plane and the station changing half an hour later? (b) How fast is the distance between

    asked by Anna
  109. Math

    How would you solve these questions using Trigonomic Identities? sin^2x = tan^2x/1+tan^2x sinx+cosx/tanx = 1/cosxtanx

    asked by O
  110. College Physic

    The tub of a washer goes into its spin cycle, starting from rest and gaining angular speed steadily for 9.58 s, at which time it is turning at 3.89 rev/s. At this point, the person doing the laundry opens the lid, and a safety switch turns off the washer.

    asked by Kevin Ngu
  111. phsyics

    A wheel has a radius of 6.6 m. How far (path length) does a point on the circumference travel if the wheel is rotated through an angle of 52.0°?

    asked by Anonymous
  112. Precal

    Find the exact values of tangent and cosecant for angle theta in standard position whose terminal side passes through the point (16,-4)

    asked by Em
  113. physics

    Three lead balls of mass m1= 13kg, m2= 26kg, and m3= 9.6kg are arranged as shown in the figure below. Find the total gravitational force exerted by balls 1 and 2 on ball 3. Be sure to give the magnitude and the direction of this force

    asked by Anonymous
  114. calculus

    At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 15 knots and ship B is sailing north at 15 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Anonymous
  115. calculus

    At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 15 knots and ship B is sailing north at 15 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Anonymous
  116. physics

    Two particles moving along parallel paths in the same direction pass the same point at the same time. Particle A has an initial velocity of 8.7 m/s and an acceleration of 1.2 m/s^2 Particle B has an initial velocity of 4.3 m/s and an acceleration of 7.7

    asked by Savannah
  117. Literature

    Please help me understand this, thanks. The way a topic is handled is called its treatment. Review the chart you completed as you read the speech. Then describe Obama's treatment of his family in the speech. By speech, it's referring to Out of Many, One.

    asked by Emma
  118. physics

    Three particles of masses 14 kg, 21 kg, and 69 kg are located at the vertices of an equilateral triangle of sides 7 m. A)Find the x-coordinate of the center of gravity of this system with respect to a coordinate system with origin at the 14 kg particle and

    asked by maura
  119. trig

    find the exact value of sinu/2, given that cosu=-4/5 and pi/2less than u less than pi

    asked by monica
  120. Chemistry

    What is the maximum number of electrons in an atom that can have the following quantum numbers? n= 4 ml= -3 ms= +1/2 How would you figure that out given those information? What's the process of that?

    asked by Ezra
  121. Personal Dimensions of Education

    Select the sentence that is punctuated correctly 1 The neighors' new dog is small, quiet, and sky. 2 The neighbors' new dog is small quiet and shy. 3 The neighbors' new dog is, small quiet and shy

    asked by Jackie
  122. Math

    A no. Plus two-third of itself plus one half of itself plus one-seventh of itself equals 97.find the no. Ans is42

    asked by Simran kaur
  123. Culturally Diverse Background

    Will someone check my answers. 1.During a class fingerpainting activity,Doresha appeared perplexed by the teacher's question, What are you doing, Doresha did not respond quickly or with ease. Why did Doresha respond to this eventcast the way she did? a.

    asked by anna
  124. science

    How long would it take a radio wave with a frequency of 5.1 × 105 Hz to travel from Mars to Earth if the distance between the two planets is approximately 8.00 × 107 km?

    asked by Anonymous
  125. physich

    A proton that has a mass m and is moving at 280 m/s in the + direction undergoes a head-on elastic collision with a stationary oxygen nucleus of mass 16m. Find the velocities of the proton and the oxygen nucleus after the collision.

    asked by Anonymous
  126. physics

    two electric charges +10 microC and -20microC are located .35 m apart how much work is required to double the distance between them?

    asked by Grane
  127. Logic

    Draw a flowchart for a program that reads a date in an 8-digit sequence (month, day, year) and determines if the date is a valid date. ignore leap year. Assume Feb has 28 days, and establish a table of days in a month so that you can access the appropriate

    asked by Jack
  128. Psychology

    Dr. Thompson asks his patient to describe an inkblot. Which technique does he use? Trait/type Projective Forced choice Simulation Personality inventory

    asked by Georgie
  129. Chemistry

    Calclte the number of moles of ethane needed to produce 10.0 grams of water according to the following reaction.

    asked by sharon
  130. Business

    my group has done a project on workplace violation, and I'm assigned to write an executive summary. I'm not familiar with the summary and don't know how to write it correctly. Could you tell me what the executive summary is, what I should include on the

    asked by Vivian Tran
  131. Chemistry

    The temperature of a sample of water increases from 20.1°C to 45.7°C as it absorbs 5675 J of heat. What is the mass of the sample?

    asked by Cassie
  132. physics

    Assume you are agile enough to run across a horizontal surface at 8.10 m/s on an airless spherical asteroid of uniform density 1.9x103 kg/m3, independently of the value of the gravitational field. To launch yourself into orbit by running, what would be (a)

    asked by Anonymous
  133. Poetry/ENG 142/Ivy Bridge

    I'm trying to form an arguement based on the following poem does anyone have any ideas on how I could do that effectively? TO HELP THE MONKEY CROSS THE RIVER, which he must cross, by swimming, for fruit and nuts, to help him I sit, with my rifle, on a

    asked by Connie
  134. physics

    a vending machine ate another students dollar. the student had enough. he dropped the vending machine off a 20 m cliff. at the same time his buddy at the bottom of the cliff throws a grenade straight up towards the vending machine. the grenade strikes the

    asked by Matt
  135. Physics

    A flatbed egg truck is in a drag race. The truck is carrying a 450 lb. crate of eggs in the back. The coefficients of friction between the crate and the truck bed are μs = 0.9 and μk = 0.4. What is the maximum acceleration the truck can have without the

    asked by Emily
  136. math

    p varies directly as the square of m inversely as n. if p =200 when m=5 and n=1/2 find p when m=6 and n=2

    asked by debra
  137. 7th grade science ASAP please!

    1. Which of the following form the main components of our body cells? (1 point) carbohydrates and proteins fat and phosphorous proteins and iron nucleic acids and calcium 2. Organic compounds always contain______. (1 point) water oxygen nitrogen carbon 3.

    asked by Delilah
  138. Chemistry

    A 5g mn sample was dissolved in 100ml water. If the percentage of M (At wt =55g/mol) in the sample is about 5%. What volume is needed to prepare 100ml of approximately 3.0 x 10-3 M solution Who helps for me. The right answer 6.7ml

    asked by Fai
  139. maths

    A large canal will have a cross-section in the shape of an isosceles trapezoid. The top will be twice as wide as the bottom, and the depth will be 8.00 m. Because of the cost of the building materials, the bottom and two slopes sides are to measure 14.0 m

    asked by david
  140. Physics

    A train is moving parallel and adjacent to a highway with a constant speed of 27 m/s. Initially a car is 41 m behind the train, traveling in the same direction as the train at 39 m/s and accelerating at 4 m/s 2 . What is the speed of the car just as it

    asked by Savannah
  141. Essay Titlle

    I am trying to figure out titles for my essay. I want the essay about family, being brave when things are going down, having faith when things are a blurr, or about being courageous when things are very tough. It's all the same, but please help me pick a

    asked by Losa
  142. Chemistry

    Why is energy released in order to react two atoms to form a compound? For instance the reaction between sodium metal and chlorine gas is highly exothermic and produces NaCl(s). Meanwhile when an atom loses an electron, it will be endothermic. Can someone

    asked by M
  143. chemistry

    The equilibrium constant Kc for the reaction C D + E is 7.90 * 10^-5. The initial composition of the reaction mixture is [C]=[D]=[E]=1.10*10^-3. What is the equilibrium concentrations of C, D, and E? C=? D=? E=?

    asked by Brunette
  144. math

    if you are 6 ft tall and cast a 90" shadow and are standing 70" from a lamp how tall is the lamp

    asked by karin
  145. Math

    x2 + bx + c and ax2 + bx + c.

    asked by Trina
  146. Math

    x2 + bx + c and ax2 + bx + c.

    asked by Trina
  147. Physics Help, Please

    A flatbed egg truck is in a drag race. The truck is carrying a 450 lb. crate of eggs in the back. The coefficients of friction between the crate and the truck bed are μs = 0.9 and μk = 0.4. What is the maximum acceleration the truck can have without the

    asked by Michael
  148. Calculus

    Find the Optimum value of the function f(x)=2x^2+6x-10 and also state if the function attains a maximum or minimum.

    asked by Daniella
  149. Math

    The numerator of a fraction is less than its denominator is increased by 9 and the numerator by 2,the fraction bcms two-third.find d fractn. Ans is 26/33

    asked by Simran kaur
  150. writing

    how did you feel when someone showed you respect and kindness

    asked by Anonymous
  151. algebra

    When an automobile accelerates, the power, P, needed to overcome air resistance varies directly with a power of the speed, v P=kv^n Use data to find the scalling exponent and the constant of variation v 10 20 30 40 p 355 2840 9585 22,720

    asked by Rebecca
  152. English

    Bias can be identified as favourable or unfavorable. What are the unfavourable bias for: 1. dog 2. growling 3. darkness 4. expressed 5. viewpoint 6. frankly 7. questioned 8. group 9. investors 10. developing 11. new 12. trusting Examples are: smart -

    asked by Ronan
  153. geometry

    Mr. Ben has 100 meters of fence to enclose his chicken pen. He wants to use a shape that will give him the maximum area for his pen. Which shape should he use?

    asked by Hibiscus
  154. Psychology

    Mrs. Smith has achieved her goals and is striving for personal fulfillment. According to Maslow, where is she on the hierarchy of needs? biological needs aesthetic needs physiological needs belonging needs self-actualization needs

    asked by Georgie
  155. physics

    A rock is thrown upwards from the top of a 100m cliff, on the way down the rock misses the edge of the cliff and continues falling to the ground. What is the distance that the rock travelled?

    asked by dhkk
  156. Physics

    Object A is moving due east, while object B is moving due north. They collide and stick together in a completely inelastic collision. Momentum is conserved. Object A has a mass of mA = 17.9 kg and an initial velocity of = 8.82 m/s, due east. Object B,

    asked by Tim
  157. math

    how many ounces of liquid can be contained in a glass jar that is 5" tall and 3" in diameter (1 gallon =231 cubic inches)

    asked by david
  158. physics

    Assume you are agile enough to run across a horizontal surface at 8.10 m/s on an airless spherical asteroid of uniform density 1.9x103 kg/m3, independently of the value of the gravitational field. To launch yourself into orbit by running, what would be (a)

    asked by Anonymous
  159. Math 109

    How many ways can the manager of a baseball team make up the batting order, assuming the pitcher bats last?

    asked by Anonymous
  160. Algebra

    An investor invested a total of 2900 in two mutual funds. One fund earned a 9% profit the other earned a 5% profit. If the investors total profit was $217 how much was invested in each mutual fund.

    asked by Alisha
  161. calculus

    the edges of a cube are increasing at the rate of 5 in/min. How fast is the volume changing when each side is 4 in.

    asked by dalton
  162. phyicis

    a vending machine ate another students dollar. the student had enough. he dropped the vending machine off a 20 m cliff. at the same time his buddy at the bottom of the cliff throws a grenade straight up towards the vending machine. the grenade strikes the

    asked by Matt
  163. English

    What can you say about how Odysseus is cunning in the cyclops cave?

    asked by Anonymous
  164. Economics

    (This homework question was removed due to a copyright claim submitted by K12 Inc.)

    asked by Josh
  165. crime and society

    The Fair Sentencing Act of 2010 accomplished all of the following except: a) It reduced the powder/crack cocaine disparity. b) It eliminated mandatory minimum prison sentences. c) It made sentencing guidelines advisory, not mandatory. d) It applied new

    asked by Tammy
  166. chemistry 11

    if I was asked to set up a procedure that will allow me to check the concentration of aqueous Co2+ ions in a reaction vessel every 15 mintues, what could I do to quickly and accurately determine the concentration of colbalt ions in the solution?

    asked by Anna
  167. physics

    A woman lifts her 100-N child up one meter and carries her for a distance of 50 m to the child’s bedroom. How much work does the woman do?

    asked by jeo
  168. Macroeconomics

    Wondering if I am doing this correctly?? If net taxes are increased by 3 billion dollars by how much would we expect real GDP to change? My answer is: d) If the government increases taxes by 3 billion dollars we would use the tax multiplier to determine

    asked by Isis
  169. maths

    3.An 1145 L tank contains 295 L of water and is being filled with brine from a full 1280 L tank at a rate of 1.55 U.S. gallons every 6 seconds. Will the smaller tank ever contain three times the amount of liquid as the larger tank? If so, when? If not,

    asked by david
  170. Math

    The mean of a binomial distribution when n=64 and p=1/2

    asked by Scoot
  171. management

    Can someone help me find the information needed to answer this question? How is recent economic trends influencing merck

    asked by Patiance
  172. Physic

    Can some one help me with this question. A uniform 119.0 cm long, 78.0 gram wooden rod is suspended from it midpoint. On one end of the rod, a mass of 350 g is attached, and on the other end a mass of 150 g is attached. A third mass of 225 g is attached at

    asked by Mary Pinzon
  173. physics

    A pendulum has a length of 1.35m. What mass should be placed on a spring with a spring constant of 10.0N/m to have oscillations with the same period as the pendulum.

    asked by Joe
  174. Physics

    Dad (M = 84kg) is pushing his son (m = 14kg) in a box (negligible mass) across the living room rug at a constant velocity. He is pushing on the box with a force of 200N directed at 37° below the horizontal. The normal force exerted by the rug on the box

    asked by Michael
  175. Spanish 3 preap

    I am curently using ser vs. estar. Can you tell me when I am suppposed to use these?

    asked by Stephanie
  176. Pre calc

    A set of 500 values has a normal distribution. The mean of the data is 24 and the standard deviation is 2. Find the range about the mean which includes 50% of the data.

    asked by Brandon
  177. chemistry

    At 860.0 deg celsius, the equilibrium constant Kp for the synthesis of ammonia (below) is 3.35 * 10^-5. What is the value of Kc? N2(g) + 3H2(g) 2NH3(g)

    asked by Brun
  178. Capacitor

    A parallel plate capacitor with plates of area 320 cm.^2 is charged to a potential difference V and is then disconnected from the voltage source. When the plates are moved 0.3 cm. farther apart, the voltage between the plates is increased by 152 V. What is

    asked by andrew
  179. math

    if you are 6 ft tall and cast a 90" shadow and are standing 70" from a lamp how tall is the lamp

    asked by karin
  180. math

    if you are 6 ft tall and cast a 90" shadow and are standing 70" from a lamp how tall is the lamp someone helped with this earlier (steve) but I still don't understand how you got your answer...can you please explain further?

    asked by karin
  181. physics

    A paperweight weighs 6.9N in air. When it is completely submerged in water it appears to weigh 4.3N. A) What is the volume of the paperweight? B) What is the density paperweight? The density of water is 1000kg/m3.

    asked by Joe
  182. Critiques cont'd

    So, if I spend about 5-6 minutes planning what else would I write except for a couple of bullet points about my two main examples? Would it just be this: ex1: _____ -something -something ex2: _____ -something -something Is that it? Also, I think I need

    asked by Sanya
  183. Math Vocab

    I am doing vocabulary for math and one of the words are negative correction. I search all over the place and didn't find a definition for that word. Help please.

    asked by Emma
  184. Physics

    A brick is thrown upward from the top of a building at an angle of 27.6 above the horizontal and with an initial speed of 13.9 m/s. The acceleration of gravity is 9.8 m/s. If the brick is in flight for 3 s, how tall is the building?

    asked by ferras
  185. Math

    When you scuba dive, the added pressure due to the water varies directly with your depth. At 20 feet, the added pressure is about 9 pounds per square inch. a) If an amateur diver can safely stand an added pressure of 30 (psi), how deep could he dive? b) A

    asked by M
  186. Physics

    To win the game, a place kicker must kick a football from a point 19 m from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 16 m/s at an angle of 59.8 from the horizontal. The

    asked by ferras
  187. macroeconomics

    the price of hot dogs changes by 22% and the quantity of hot dogs demanded changes by 25%. This indicates that demand for hot dogs is a.elastic b.inelastic c.unit elastic d.perfectly elastic

    asked by shereeka
  188. physics

    A digital audio compact disc carries data along a continuous spiral track from the inner circumference of the disc to the outside edge. Each bit occupies 0.60 mm of the track. A CD player turns the disc to carry the track counter-clockwise above a lens at

    asked by Anonymous
  189. physics

    A digital audio compact disc carries data along a continuous spiral track from the inner circumference of the disc to the outside edge. Each bit occupies 0.60 mm of the track. A CD player turns the disc to carry the track counter-clockwise above a lens at

    asked by Anonymous
  190. Social studies

    1. How many times do children have a sleepover party a year? 2. In what season do they have a sleepover party usually? 3. Do all parents pick up their children next morning? (Would you answer the questions? Thank you.)

    asked by rfvv
  191. Maths

    Let f(x) = √(x^2 + 1) - 1 (taking the positive real square root, as usual). When x = 10^-3, compute f(x), working to 5 significant figures at every stage of the calculation. Show (algebraically) that f(x) =(x^2)/[√(x^2 + 1) +1]. Use this expression for

    asked by Jade
  192. ersonal Dimensions of Education

    Help........... Select he sentence that is punctuated correctly. 1.Zora's lemon trees produces too much fruit She gives them away therefore, to her friends and neighbors. 2. Zora's lemon tree produces too much fruit. The gives them aay, therefore to her

    asked by Jackie
  193. physics

    A wheel has a radius of 6.6 m. How far (path length) does a point on the circumference travel if the wheel is rotated through an angle of 52.0°?

    asked by Anonymous
  194. Chemistry

    Find the number of mg Na2co3 FW = 106g/mol required to prepare 500ml of 9.2ppm NA solution. ppm = mg/L 9.2mg/1000ml x= 0.0092 x 500ml = 4.6mg x 23 = 106mg The right answer 10.6mg NA weight = 23 Who helps me to solve it for me.

    asked by Fai
  195. Math word problem

    Ryan collected 43 candy bars on Halloween he gave 15 of them to his father andhe gave his mother ten less candy bars than he gave his father. Then Ryan ate 4 of the candy bars . Hwo many Andy bars does he have left ? I got 19

    asked by Marco
  196. calculus

    Find critical points of f, and the extrema of f on the given interval. a)f(x) = x^4-10x^2; [0,3] b)f(x) = (x/e^x); [0,2]

    asked by carter
  197. Math (Calculus)

    At 2:00 pm boat K is 25 km north of boat L. If boat K is sailing 5 km/h west and boat L is sailing north at 20 km/h, what is the rate at which the distance between the two boats in changing at 2:30?

    asked by Steven
  198. Physics Help, Please

    In the final stages of the landing process, a spaceship decelerates at a constant rate of 5.3 m/s2 heading towards the Earth. A 3kg lamp is hanging straight down, attached to the ceiling of the ship cabin by a chain. What is the tension in the chain?

    asked by Michael
  199. physics

    A wheel has a radius of 6.6 m. How far (path length) does a point on the circumference travel if the wheel is rotated through an angle of 52.0 rad?

    asked by Anonymous
  200. Psychology -- Check please?

    Gertie can feel roaches running over her feet even though they are not there. What is this called? a fixation a hallucination an illusion an eidetic image a phobia I would think that Gertie would be having some sort of a hallucination..

    asked by Lily
  201. algebra

    A grandmother is looking for a plan to finance her new grandchild’s college education. She has $25,000 to invest. Search the internet and locate a long-range investment plan, CD, Savings Bond, etc, for the grandmother. The plan is to earn compound

    asked by Kathy
  202. chemistry

    Given the reaction: H2SO4 = 2NaOH -> NaSO4 = 2H20. Determine the # of moles of sulfuric acid id needed to completely react with 2.3 L of 0.5 M of NaOH. Then determine the concentration of the solution if 3.0 L of it are used instead.

    asked by sarah
  203. Anthropology

    Caste systems are most common in societies

    asked by Anonymous
  204. physics

    suppose the water at the top of niagara falls has a horizontal speed of 2.7m/s just before it cascades over the edge of the falls. at what vertical distance below the edge does water reach a horizontal distance of 4 m away

    asked by Anonymous
  205. English 8R - Homework Check (plzzzz read)

    Is my summary good??? (The Princess Diaries by Meg Cabot) Mia Thermopolis is an average urban ninth grader. She lives in Greenwich Village with a single, liberal mom who is a semi-famous painter. The most exciting things she ever dreams about are kissing

    asked by Laruen
  206. math

    Joel has twice as many cds as Mary has. Subtracting 7 from the number of cds Joel has and dividing by 3 equals the number of cds Blake has. If Blake has 25 cds, how many cds does Mary have?

    asked by paul
  207. Physics

    9)A car, moving along a straight stretch of highway, begins to accelerate at 0.0153 m/s 2 . It takes the car 29.2 s to cover 1 km. How fast was the car going when it first began to accelerate? Answer in units of m/s

    asked by Savannah
  208. Math

    The odds are 3 to 5 in favor of drawing a blue marble in one random drawing from an urn containing only red and blue marbles. There are more than 100 marbles in the urn. what is the minimum number of red marbles that there could be in the urn?

    asked by Carson
  209. Chemistry

    I need to understand, which has more effect in inducing the reaction of silver salts. Intensity or wavelength?

    asked by Jasmine
  210. ap chemistry

    I have taken ap chemistry but I have language barrier and sometimes I don't get it and I am getting behind.We are already in chapter 9.I don't want to quit. What is the best way to improve and learn faster?Any practice I should do?What is the experience

    asked by zoya
  211. Personal Dimenion of Education

    The coordinating conjunctions that can be used to combine two complete sentences with a comma are 'for,and,nor,because,yet, so True or False

    asked by Jackie
  212. physics

    A 3.0 kg sphere moving to the right at 2.0m/s undergoes an elastic head-on collision with a 2.0kg sphere. The 2.0kg sphere is initially at rest. What is the speed of each sphere after the collision?

    asked by Joe
  213. College Physic

    I am stuck on this question. Any help will be greatly appreciated! A 0.082 kg solid cylinder with a radius of 1.90 cm, is placed at the top of a 30º inclined plane of height 29.5 cm. If the inclined plane is not frictionless, and the cylinder does roll,

    asked by Jennifer Hill
  214. SAT Essay Critiques

    Mr. Pursley- You have critiqued multiple essays of mine- is there recurrent mistake that I make? What can I do to make it go from a 5 to 6? Thank you so much, I really appreciate it.

    asked by Sanya
  215. Science (Microbiology)

    The "resistant" threshold for gemifloxacin is >1 mg/L while the "resistant" threshold for sulfamethoxazole is >512 mg/L. Explain why there might be this great disparity of values in resistance thresholds (512-fold) for each antibiotic pharmacologically

    asked by Ashley Strenke
  216. EnglishIII

    I'm writing an essay and was wondering if this part was okay. I was eager for this day to end and summer begin. Despite my eagerness, I was excited about the “surprise” guest the school had booked to make this day special for our graduating class.

    asked by Claire
  217. English 8R - Book Project

    Is there any movies quotes about The Princess Diaries by Meg Cabot. I need it for my movie poster.

    asked by Laruen
  218. science

    give an example of a physical stimulus for touch, sight, and hearing. name the organs this sense is associated with.

    asked by kayla
  219. business

    what are Australia's major industries competitive issues? For example, the competitive issues of mining, manufacturing, tourism, agriculture and finance.

    asked by allee
  220. ersonal Dimensions of Education

    There should be commas around "however" in the following sentence: Dwayne had planned to take the last flight out to chicago. It was cancelled, however, because of bad weather (True or False)

    asked by Jackie
  221. math

    I need to use calculus to solve this word problem: Find all maximum and minimum values for f(x)= sin(x)+ cos(x) on [0, 2(3.14)] How do I do it?

    asked by bob
  222. Economics

    Graph A New Equilibrium: Y axis represents Quantity (hours per semester) 0, 25, 50, 75, 100, 125, 150 X axis represents Price of Tutoring (per hour) 0, 5, 10, 15, 20, 25, 30, 35, 40, 45, $50 Question: Determine the approximately size of market surplus or

    asked by Sanford
  223. geography

    john who lives at 35 degrees north and 120 degrees west regularly calls Geroge his business partnet at 2pm (John's local time) every day during July last year. George regularly recevied the calls at 10 pm ( his local time). throughout the month, George

    asked by christina
  224. biology

    purpose of the special sense organs

    asked by jessica
  225. mathematics

    A farmer buys a tracter for Rs 120000. he pays Rs 60000 cash and agrees to pay the balance in annual installments of Rs 5000 plus 12% interest on the unpaid amount. what will the tracter cost him?

    asked by Edward
  226. algebra

    7 nickels to 22 dimes

    asked by jamie
  227. St.george high school

    The numerator of a fraction is 8 less than the denominator.when 6 is added to the numerator and 10 is added to the denominator,the value of the fraction is unchanged.find the original fraction.

    asked by Lynn
  228. Math

    X/3=r

    asked by Fiza
  229. Engineering Problem Solving

    if a car can accelerate at 7 meters/second, what will its 0-60 mph time be?

    asked by P.J.
  230. Math

    Differentiate cos^2 x w/ respect to x

    asked by Anonymous
  231. Math

    Differentiate cos^2 x w/ respect to x

    asked by Anonymous
  232. physics

    In a paragraph, use the following words: Inertia, Acceleration, Kinetic Energy, and Newton's 1st Law to describe the physics at work during a car crash

    asked by Nigear
  233. Math

    Find the dy/dx of the equation y=e^-x^2

    asked by Anonymous
  234. physics

    In a paragraph, use the following words: Inertia, Acceleration, Kinetic Energy, and Newton's 1st Law to describe the physics at work during a car crash

    asked by Nigear
  235. Maths

    Let f(x) = tan(x). What is the formula for the conditioning number of f? Evaluate this formula for x =(π/4), 1.01, 1.26, 1.51 (in radians, working to 3 signifi cant figures, the precision that is implicit in this data). Replace each of the expressions for

    asked by John
  236. Physics

    An arrow is shot at an angle 36 of with the horizontal. It has a velocity of 47 m/s. How high will the arrow go? The acceleration of gravity is 9.8 m/s

    asked by ferras
  237. math

    it is between 1 and 2 million.the first three digits are the same.the least possible digit is in the ones place.the hundreds digit is 1 more than the tens digit.the sum of the digits is21.

    asked by deja
  238. Stats

    What critical t value would be needed to construct a 90% confidence interval on a sample of size 22? 1.717 1.323 2.080 1.321 1.721

    asked by etwetw
  239. Statistics

    You have two independent samples of size 24 and 27. You conduct a hypothesis test and obtain a p-value. Using the conservative method what would you use for the degrees of freedom for comparison? 24 27 23 26 49

    asked by Huh
  240. decision making

    Tom Garvey, your boss, is the director of highway safety for the state. Tom has two main problems. One is that there is never enough money in the budget to implement all the schemes his office proposes. The second is that many of the schemes are

    asked by Vanessa
  241. Physics B

    part 1 A coordinate system (in meters) is constructed on the surface of a pool table, and three objects are placed on the coordinate system as follows: a 1.5 kg object at the origin, a 3.4 kg object at (0 m,1.8 m), and a 4.5 kg object at (4.2 m,0 m). THANK

    asked by Mary
  242. physics

    A toy race car starts from rest on a circular track of radius 4.30 m. The cars speed increases at the constant rate of 2.90 m/s2. At the point where the magnitudes of the centripetal and tangential accelerations are equal, determine (a) the speed of the

    asked by Anonymous
  243. eco/365

    what is sub optimization need an example of it to

    asked by at
  244. Calculus

    Inclusive of a 6.4% tax, a diamond ring sold for $2128.00. Find the price of the ring before the tax was added.

    asked by Darlene
  245. Physic

    A CD rotates from rest up to an angular speed of 32.40 radians per second in a time of 0.861 seconds. Determine the angle (in degrees) through which the disc turns while coming up to speed assuming that the tangential acceleration is uniform. I hve tried

    asked by Janki Patel
  246. singapore math

    Using these numbers to fiqure the problem. (120,30,90,60,50,40,160,80) The sum of two numbers is 190. What would the answer be? And the sum of their digits is 10.

    asked by lori
  247. Calculus

    Let F(x) = square root of X and [a,b]. Find all numbers c in (a,b) such that f'(c) = f(b)-f(a)/b-a

    asked by April
  248. Grammar

    Is this correct? We forgave each other after we had argued. Are the tenses correct?

    asked by Anonymous
  249. biology

    In which sequence did aerobes, anaerobes, chemolithotrophs and cyanobacteria evolve? What evidence is there to support your answer. If someone can answer please. I think its talk about how cyanbactoria evolve.

    asked by john
  250. Physic (algebra base)

    I need help with one of my last hw problem can you help me? A magnetic computer disk with a 4.03 cm radius is initially at rest. A small dot is painted on the edge of the disk. The disk accelerates at 500 rad/s2 for 1.76 s. How many revolutions has the dot

    asked by Mary Ann Smith
  251. statistics

    A random sample of 384 people in Dalto City, a mid-sized city, revealed 112 individuals who work at more than one job. A second random sample of 432 workers from East Dettweiler, another mid-sized city, found 91 people who work at more than one job. To

    asked by John
  252. calculus

    need some help im doin antiderivatives it has (2-x^2)^4xdx i understand how to do it for the most part but i come up with 1/5(2-x^2)^5+c the book has a answer of -1/10(2-x^2)^5+c how what am i doing wrong

    asked by kieran
  253. math

    it is between 1 and 2 million.the first three digits are the same.the least possible digit is in the thousands place.the greatest possible digit is in the ones place.the hundreds digit is 1 more than the tens digit.the sum of the digits is 21.

    asked by deja
  254. reading

    why does it take so long after you answer my question?

    asked by deja
  255. stats

    if you know the mean and standard deviation, how do you determine the proportion that will and will not be included

    asked by mary
  256. Physics Help, Please

    A physics student is pulling on a 20 kg box that is sliding on the floor. The student applies a pulling force of 100 N using a rope at angle 30o from the horizontal. The coefficient of kinetic friction between the box and the floor is 0.4. The acceleration

    asked by Michael
  257. math

    3x^2+2xy+y^2=2 then the value of dy/dx at x=1 is?

    asked by Daniela
  258. math(please help)

    Allison, Ashley, and Becky weigh 124 kg altogether. Allison and Becky weigh 102 kg altogether. Allison and Ashley weigh 86 kg altogether. How much does each person weigh? please show your work.

    asked by May
  259. Pre-calculas Math

    how to find the exact value of: cos(9*pi/12)*cos(5*pi/12)+sin(9*pi/12)*sin(5*pi/12)

    asked by Jon
  260. SAT Essay

    Mr. Bob Pursley- You have critiqued multiple essays of mine- is there recurrent mistake that I make? What can I do to make it go from a 5 to 6? Thank you so much.

    asked by Sanya
  261. MATH

    A semiograph 300km from the epicenter of an earthquake recorded a maxximum amplitude of 5.3x10^2 um. Find this earthquake's magnitude on the Richter scale. (Round your answer to the nearest tenth)

    asked by TEDDY
  262. precalculus

    Use the elimination method to find all solutions of the system of equations. (Order your answers from smallest to largest x, then from smallest to largest y.) x − y2 + = 0 2x2+ y2 −9 = 0

    asked by Ama
  263. calculus

    Gravel is being dumped from a conveyor belt at a rate of cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always equal to each other. How fast is the height of the pile increasing when the pile

    asked by Anonymous
  264. algebra

    A=P(1+r/n)^nt a) Suppose you deposit $3000 for 6 years at a 7% rate

    asked by Doris
  265. math

    the scle drawing of a close is 3 inches wide by 4.2 inches long. the original closet is 10 feet wide. how long is the original closet in feet? how long is the original closet in yards?

    asked by Erick
  266. Microeconomics

    If John's preferences are given by U(c,D)=log(c)+D where c is consumption and D is total donations and a wealthy individual sets up a matching fund campaign where John's total donation (D) is given by D=kd where k is the expansion factor and d is John's

    asked by Shayna
  267. algebra

    Suppose there are only enough tutors for 12 fifth graders to attend tutoring . What is the domain and range of the function in Y=.40x

    asked by Andy
  268. chemistry

    Fe(s) +Pb^2 (aq)---->Fe ^2+ (aq) +Pb(s) which reactant has been oxidized

    asked by jake